Image editing

• Aspect Ratio Calculator Lock an aspect ratio and solve width ↔ height in pixels
• Brightness & Contrast Adjust brightness, exposure, contrast and saturation — no upload
• Rotate & Flip Rotate, flip and straighten an image — no upload
• Black & White / Sepia Convert an image to black & white or sepia — no upload
• Duotone Recolour an image into two tones — no upload
• Halftone Turn an image into comic-style halftone dots — no upload
• Dither Dither an image to a retro 1-bit look — no upload
• Film Grain Add analogue film grain to a photo — no upload
• Glitch Art Add a glitch / datamosh effect to a photo — no upload
• ASCII Art Turn an image into ASCII text art — copy or PNG, no upload
• Pixel Art Turn an image into pixel / dot art — shrink + reduce colours, no upload
• Colour Blindness Simulator See how an image looks with colour blindness — protan / deutan / tritan, no upload
• Meme Generator Add top / bottom text to an image — classic Impact-style caption, no upload
• Speech Bubble Add a manga / comic speech bubble to an image — drag to place, no upload
• Sprite Sheet Maker Pack frames into one sprite sheet — columns, frame size, transparent, no upload
• Sprite Sheet Splitter Cut a sprite sheet into individual frames — grid or cell size, margin, spacing, ZIP, no upload
• Sprite Sheet to GIF Turn a sprite sheet into an animated GIF — grid or cell size, frame delay, loop, transparent, no upload
• GIF Maker Turn a set of images into an animated GIF — frame delay, loop, transparent, no upload
• Video to GIF Trim part of a video and turn it into an animated GIF — fps, loop, no upload
• Video Frames Extract still frames from a video at a fixed interval — save as PNG/JPEG or ZIP, no upload
• Image Sequence to Video Turn a numbered PNG/JPEG sequence into a WebM video — set fps, no ffmpeg, no upload
• Mosaic Pixelate, blur or black out parts of an image
• Resize Resize images by pixels or percentage
• Crop Crop an image down to any selection
• Convert Convert between PNG, JPG and WebP
• HEIC to JPG Convert iPhone HEIC/HEIF photos to JPG or PNG in batch — no upload
• Compress Shrink image file size with a quality slider
• Bulk Image Resizer Resize many images at once & compress to KB → ZIP, no upload
• Watermark Add a text watermark to an image
• Tiled Watermark Tile a text watermark across the whole image — angle, spacing, hard to crop out, no upload
• LINE Sticker Maker Resize an image to LINE / Discord sticker sizes — transparent PNG, no upload
• Text Emoji Maker Turn short text into a square transparent emoji for Slack / Discord — stretched to fill, no upload
• Image Grid Combine images into a contact-sheet grid — no upload
• Image Merge Combine photos into one — side by side, stacked, or big + 2
• Collage Maker Make a photo collage — grid layout, rounded corners, social sizes
• Moodboard Maker Make a moodboard — drop images into a grid with a title and a colour palette sampled from them, export PNG — no upload
• Tier List Maker Make a tier list — drag images or text into S/A/B/C tiers, export PNG — no upload
• Measurement Chart Maker Draw a flat-lay garment measurement chart for resale listings — labelled lines, no upload
• Square Crop & Compress Crop a photo to a perfect square and compress it for resale listings — no upload
• Placeholder Image Generator Generate a dummy placeholder image at any size with custom colors and label — no upload
• Identicon & Initials Avatar Generator Generate a deterministic identicon or initials avatar from any name or string — no upload
• Noise & Background Texture Generator Generate a noise, paper, grid or dots background texture at any size — transparent PNG, no upload
• Gradient Background Image Generator Generate a linear or radial gradient background image at any size and color — PNG/JPEG, no upload
• OG Image Maker Make Open Graph / social thumbnails — sized, with text & background
• Screenshot Frame Add padding, background, rounded corners & shadow to a screenshot
• Alpha Check Check PNG transparency on a checkerboard — no upload
• Tile Preview Check if a texture tiles seamlessly — no upload
• Color Palette Extract a color palette from an image — HEX / RGB, no upload
• Social Media Crop Crop to exact X / YouTube / Instagram icon, header & thumbnail sizes — no upload
• Round Crop Crop a photo into a circular avatar — transparent PNG, no upload
• Add Border Add a white / black border or Polaroid frame to a photo — no upload
• Image Splitter Split an image into an N×M grid of tiles (Instagram grid) — ZIP, no upload
• Favicon Generator Make a favicon.ico + all PNG sizes from an image — ZIP, no upload
• Pixel Art Upscaler Upscale pixel art with nearest-neighbor — crisp, no blur, no upload
• SVG to PNG Rasterize an SVG to a PNG at any pixel size — no upload
• Image to SVG Vectorize a PNG/JPG to a scalable SVG — colors + detail, no upload
• Normal Map Generator Turn a texture or heightmap into a normal map — strength, OpenGL/DirectX, no upload
• Seamless Texture Generator Make a texture tile seamlessly — edge blend + 2×2 preview, no upload
• Gradient Map Map image luminance to a color gradient (duotone) — 2/3 stops, intensity, no upload
• Palette Swap Recolor an image to a fixed palette (pixel art) — presets, HEX list, dither, no upload
• Color Ramp Generator Generate a shading ramp from one color (pixel art) — hue shift, copy HEX, PNG, no upload
• Posterize Reduce an image's tonal levels for a poster / silkscreen look — 2-16 levels, grayscale, no upload
• Low Poly Image Generator Turn a photo into a low-poly triangle-art image (Delaunay) — detail & edge focus, PNG, no upload
• Photo to Coloring Page Turn a photo into a printable black-and-white coloring page (line art) — tune detail & thickness, no upload
• Perler Bead Pattern Maker Turn a photo into a Perler / Hama bead pattern — real bead colours, per-colour bead counts, printable, no upload
• Cross Stitch Pattern Maker Turn a photo into a cross stitch pattern — real DMC colours, symbol chart, per-colour stitch counts, fabric size, no upload
• Minecraft Pixel Art Maker Turn a photo into Minecraft pixel art — real block colours (concrete/wool), per-colour block counts, chunk grid, no upload
• Minecraft Banner Maker Design a Minecraft banner in your browser — pick a base color, layer up to 6 colored patterns while you preview, then export the Java /give command and a PNG — no sign-up, no upload
• GIF Frame Extractor Split an animated GIF into PNG frames — download as a ZIP, no upload
• Color Picker Pick HEX / RGB / HSL colors from an image with a magnifier — no upload
• DPI Changer Set a PNG/JPEG's print DPI losslessly — no resampling, no upload
• Transparent Background Make a color transparent → transparent PNG (white / green screen) — no upload
• Background Remover Remove the background from a portrait on your device → transparent PNG — no upload
• Image to Text (OCR) Extract text from an image (JP/EN) on your device with OCR — no upload
• AI Image Upscaler Upscale images 4× with an anime AI model (Real-ESRGAN) on your device — no upload
• OC Reference Sheet Maker Make a character reference (ref) sheet — art, profile & color palette on one page, export PNG — no upload
• Tarot Card Maker Make a custom tarot card — your art, a Roman numeral & a name in a decorative frame, export PNG to print — no upload
• Trading Card Maker Make a custom trading card — your art, name, cost, type, effect text & stats in a TCG-style frame, export PNG to print — no upload
• Proxy Card Maker Make TCG proxy cards (MTG / Pokémon / Yu-Gi-Oh) — your art at exact card size, tiled onto an A4 / Letter sheet with cut guides, export print-ready PNG — no upload
• Manga Panel Template Maker Make a blank manga / comic panel layout — set tiers and panels-per-tier, print sizes (B5 / A4) with bleed & inner-frame guides, export PNG — no upload
• Doujinshi Cover Maker Make a doujinshi / book cover spread (back + spine + front) at true size — spine width auto-computed from page count, add art & title, export PNG — no upload
• Album Cover Maker Make a square album / CD cover — your art at streaming size (3000×3000 / 1400×1400) or CD / vinyl, add title, artist & Parental Advisory label, export PNG — no upload
• Spotify Cover Maker Make a Spotify playlist / cover image at true square size (640×640) — title + subtitle over a gradient, solid color or image, export PNG — no upload
• Twitch Panel Maker Make Twitch channel panels at true size (320px wide) — heading + caption over a color or image, accent underline, export PNG — no upload
• Stream Schedule Maker Make a weekly stream schedule image for Twitch / YouTube / VTuber — title + time & activity per day over a color, gradient or image, export PNG — no upload
• Lower Third Maker Make a video lower third (name + title bar) as a transparent PNG — bar / news / minimal styles, set position, colors & font, drop it onto your video timeline — no upload
• Demotivational Poster Maker Make a demotivational / motivational poster — your photo in a thin frame on black with a big heading and a small caption, export PNG — no upload
• Twitch Emote Maker Resize one image into every Twitch / Discord / Steam emote size at once — transparent PNGs in a zip, no upload
• Discord Banner Maker Make a Discord profile banner (600×240) or server banner (960×540) — heading + caption over a color or image, accent underline, export PNG — no upload
• Twitter / X Header Maker Make a Twitter / X header at true size (1500×500) — title + tagline over a gradient, solid color or image, with an avatar / crop safe-area guide, export PNG — no upload
• Fake Tweet Generator Make a realistic X (Twitter) post mockup and save a PNG — no upload
• Fake Text Message Generator Make an iMessage / SMS chat mockup and save a PNG — no upload
• Fake Discord Message Generator Make a Discord chat mockup and save a PNG — no upload
• Tournament Bracket Maker Make a single-elimination tournament bracket from a list of players — print or PNG, no upload
• Discord PFP Maker Make a Discord avatar (pfp) at true square size (512×512) — initials or a photo over a gradient/solid/image, with a circle-crop + status-dot guide, export PNG — no upload
• YouTube Thumbnail Maker Make a YouTube thumbnail at true size (1280×720) — grab a frame from a video, add big outlined title text, check the safe area, export PNG — no upload
• YouTube Banner Maker Make a YouTube channel banner at the upload size (2560×1440) — heading + caption over a color or image, with the all-devices safe area (1546×423) guide so nothing gets cropped, export PNG — no upload
• Text Logo Maker Make a text-only logo in your browser — type a name, pick a font, weight, color, letter spacing, an optional emoji icon and a rounded/pill badge, then export a transparent PNG — no sign-up, no upload
• Phone Wallpaper Maker Make a phone wallpaper at your device's true resolution (iPhone / Android presets) — solid, gradient or photo background, optional text, lock-screen safe area, export PNG — no upload
• Grid Drawing Tool Put a grid over a reference image for copying or sketching — set columns (or square cells), line color, thickness and opacity, add row/column labels and diagonals, then save PNG — no upload
• Perspective Grid Generator Make a 1/2/3-point perspective drawing grid — set the horizon, vanishing points, line color & size, then print it or save a PNG to draw over — no upload
• Uchiwa Lettering Maker Make Japanese oshi-katsu fan (uchiwa) lettering — bubble / gradient letters with layered outlines, save a PNG or print for a convenience store — no upload
• Can / Pinback Button Template Maker Make a print-ready can badge / pinback button template at the exact finish size (mm) with bleed & safe guides — load your own image, save a 300-dpi PNG or print — no upload
• Photocard / Trading Card Maker Make your own photocard / trading card at the real card size (mm) — load your image into a rounded card, save a 300-dpi PNG, or print an A4 sheet of copies to cut — no upload
• Doujin Circle Cut Maker Make a doujin event circle cut at the exact pixel spec (Comiket 635×903 / COMITIA 638×945 / custom) — load your image, add your circle name & space, save a framed PNG or print — no upload
• Doujin Oshinagaki Maker Make an oshinagaki (item-list) image for a doujin event — line up your books' covers, titles, prices & a NEW label in a grid, then save a PNG for X / Instagram — no upload
• Doujin Price Tag Maker Make doujin price tags (price cards) for your table — type each book's title, price & note, pick a card size, and lay them on an A4 sheet with cut lines → 300-dpi PNG or convenience-store / network print — no upload
• Stream Starting Soon / BRB / Ending Screen Maker Make the 3 stream screens — Starting Soon, Be Right Back & Ending — at 1920×1080 (or 1280×720) for OBS: pick a color or gradient, drop in your own image, add a title & your handle → PNG. Still image (no animation) — no upload
• Webcam Frame Maker Make a transparent webcam frame / facecam border for OBS — 16:9 / 4:3 / 1:1 / 9:16 / circle, solid / double / dashed lines, rounded corners, color or gradient & a name tag → transparent PNG, no upload
• Tachie Diff Cropper Trim several standing-portrait (tachie) expression diffs to the same frame & position, then save them all as transparent PNGs (zip) — keeps them aligned for Cocofolia & TRPG sessions — no upload
• Photo Print Layout Tile photos at real print sizes onto A4 / L-size for home printing — no upload

AI · Stable Diffusion

• PNG Info View AI prompt & generation data in an image
• Batch PNG Info Extract AI generation data from many images to one CSV
• Safetensors Info Read a LoRA's trigger words & base model (header only)
• GGUF Info Read a GGUF model's architecture, quantization & params (header only)
• LoRA Metadata Editor Edit a safetensors LoRA's trigger words & notes, then re-save — weights untouched
• Embedding Viewer Read a Textual Inversion's trigger word, vectors & base model
• Tag Formatter Tidy booru tags: underscores, escaping, dedupe & sort
• Tag Translator Translate booru tags between English & Japanese — built-in dictionary
• Prompt Translator Turn a Japanese prompt into English tags — built-in phrase dictionary
• CLIP Token Counter Count CLIP tokens & see the 75-token chunk breaks — no upload
• Prompt Weight Convert prompt weights: A1111 ⇄ NovelAI ⇄ (word:1.2)
• Negative Prompt Generator Build negative + quality tags: SDXL / Pony / NovelAI presets
• Danbooru Search Query Builder Build booru search syntax: tags, rating, order, ratio, score
• Prompt Organizer Sort & reorder prompt tags by category: quality, subject, style…
• Video Prompt Builder Build text-to-video prompts: camera, shot, lighting, style, length
• Seed Generator Generate random SD seeds & seed sequences for batch / XYZ plot
• VRAM Calculator Estimate Stable Diffusion VRAM from model / resolution / batch / precision
• Checkpoint Merge Calculator Merge ratios + Merge Block Weighted (MBW) weight strings for SD checkpoints
• Canny Edge Detector ControlNet canny edge map preview — tune thresholds, no upload
• Line Art Extractor Turn a photo into black-on-white line art — pencil-sketch style, no upload
• OpenPose Editor Drag a 2D OpenPose stick figure into any pose and export a PNG for ControlNet — no upload
• Regional Prompter Ratio Preview Type a Regional Prompter Divide Ratio and see the region split, BREAK skeleton & mask PNG — no upload
• Image Diff Compare two images pixel by pixel — heatmap, highlight & raw diff, no upload
• Comparison Slider Wipe between two images with a draggable divider — before/after PNG, no upload
• SD Resolution Aspect ratio → SDXL / SD width × height (multiple of 64)
• ComfyUI Workflow Extract the workflow JSON from a ComfyUI PNG — no upload
• ComfyUI Workflow Inspector List a workflow's custom (missing) nodes & referenced models before loading it
• Model Hash Civitai AutoV2 / SHA256 of a model — in-browser, no upload
• Prompt Matrix Expand {a|b|c} prompt templates into every combination
• Prompt Diff Compare two prompts tag-by-tag: added, removed & common
• Tag Counter Count tag frequency across caption .txt files — no upload
• Caption Editor Batch-edit caption .txt files and re-save as a zip — no upload
• Bucket Preview See which kohya / SD training bucket each image lands in — no upload
• Dataset Dedupe Find near-duplicate images in a training set via perceptual hash — no upload
• Wildcard Tester Preview __wildcard__ & {a|b|c} dynamic prompts with random samples — no upload
• Wildcard File Maker Build __wildcard__ .txt files for sd-dynamic-prompts as a ZIP — no upload
• PNG Metadata Add Write a prompt or comment into a PNG's tEXt — lossless, no upload
• Hires Fix Calculator Base size × upscale factor → final resolution (and back) — no upload
• LoRA Training Steps Calculator Images × repeats × epochs ÷ batch → total kohya training steps
• Frames to Seconds Calculator Frames ⇄ seconds ⇄ fps + Wan 4n+1 snap + interpolation factor → final fps
• LoRA Prompt Builder Stack multiple <lora:name:weight> tags + trigger words into one prompt — no upload
• Image Colors to Prompt Turn an image's dominant colors into English color words for prompts — no upload
• Prompt Schedule Visualizer Visualize [from:to:step] and [a|b] prompt editing on an Automatic1111 step timeline
• X/Y/Z Plot Values Generate Steps/CFG/Seed/Sampler axis value lists for the X/Y/Z plot script
• Suno / Udio Prompt Builder Build a Suno / Udio “Style of Music” string from genre, mood, instrument & BPM tags — no upload

Audio & music

• BPM Tapper Tap the button or spacebar in time with a song to measure its BPM — decimals, no upload
• Chord Progression Generator Pick a key, build a diatonic chord progression, play it & export MIDI — no upload
• Audio Waveform Generator Turn an audio file into a clean waveform image — pick style & color, download PNG, no upload
• Audio Trimmer / MP3 Cutter Cut a clip from an MP3, WAV or other audio file and save it as WAV or MP3 — in your browser, no upload
• Audio Converter (MP3 / WAV) Convert an audio file to MP3 or WAV in your browser — change bitrate, sample rate & channels, no upload
• Audio Joiner / MP3 Merger Merge several audio files into one in the order you choose and save as WAV or MP3 — in your browser, no upload
• Guitar Tuner (Microphone) Tune guitar, bass or ukulele with your microphone — note, cents & adjustable A4, in your browser, nothing sent
• Metronome (Online) Accurate Web Audio metronome — tempo (BPM), beats per bar, accent, subdivisions & tap tempo, in your browser, nothing sent
• Noise Machine (White / Pink / Brown) Generate white, pink & brown noise in your browser — focus, sleep or soothe a baby, with volume, tone & a sleep timer, nothing sent

Privacy

• Remove EXIF Check & strip GPS location from photos — no upload
• EXIF Viewer View every EXIF metadata & GPS tag in a photo (read-only) — no upload
• Batch EXIF Strip Strip EXIF/GPS from many photos at once → ZIP, no upload
• PDF Metadata Remover View & remove a PDF's author / title / metadata — no upload
• Office Metadata Remover View & remove author / company metadata from Word / Excel / PowerPoint — no upload
• PDF Redaction Black out a PDF permanently — boxes are burned in, text underneath is gone (no upload)
• Password Strength Checker Check a password's strength, entropy & estimated crack time in your browser — nothing uploaded
• Redact Image Black out / blur sensitive areas of documents & screenshots
• Clean Metadata Remove AI prompt & EXIF before posting (lossless)

Developer

• App Icon Generator Make every iOS / Android app icon size from one image — Xcode AppIcon.appiconset + Android mipmaps in one ZIP, no upload
• D&D Character Sheet Maker Make a D&D 5e (2024) character sheet in your browser — auto-calculates ability modifiers, proficiency bonus, saving throws, skills and passive Perception, then print or save as PDF — no upload
• JSON Formatter Format, validate & minify JSON — no upload
• Regex Tester Test regex with live match highlight, groups & replace — no upload
• QR Code Generate a QR code from text or a URL — PNG & SVG, no upload
• QR Code with Logo Put a logo in the center of a QR code — high error correction, no upload
• CSV to Markdown Convert CSV / TSV into a Markdown table — no upload
• SRT Subtitle Editor Edit .srt subtitles in your browser — fix text, shift every timecode at once, and renumber, then download — no upload
• Markdown ⇄ HTML Convert Markdown to HTML (with a table of contents) and back — no upload
• Base Converter Convert binary, octal, decimal & hex — with a bit view, no upload
• Stream Bitrate Calculator Find the right OBS bitrate from resolution / fps / motion, check your upload and Twitch / YouTube / Kick ingest limits — no upload
• JWT Decoder Decode a JWT's header & payload in your browser — no upload, not verified
• JWT Generator Sign a JWT (HS256/384/512) from your payload & secret — no upload
• Hash Generator Generate MD5, SHA-1, SHA-256 & SHA-512 hashes of text in your browser
• UUID Generator Generate UUID v4 / v7 in bulk in your browser — no upload
• Unix Timestamp Converter Convert Unix epoch (sec/ms) ⇄ date with UTC, local & relative time
• Cron Expression Parser Explain a cron expression in plain words and show the next run times
• Color Code Converter Convert a color between HEX, RGB, HSL & HSV at once, with alpha & copy
• Color Contrast Checker Check text/background contrast ratio against WCAG AA & AAA, with preview
• Text Diff Checker Compare two texts by line, word, or character — additions and deletions color-coded
• JSON Diff Compare two JSON documents by structure — no upload
• JSONPath Tester Extract values from JSON with JSONPath — no upload
• Case Converter Convert text between camelCase, snake_case, kebab-case, PascalCase and more
• Morse Code Translator Translate text ⇄ Morse code (international & Japanese Wabun) with audio playback
• Unicode Inspector Inspect each character's code point, UTF-8, HTML entity & JS escape — and spot invisible characters
• Meta Tag Generator Generate SEO, Open Graph & Twitter Card meta tags with a live preview — no upload
• CSS Gradient Generator Build linear, radial & conic CSS gradients with a live preview — no upload
• Mesh Gradient Generator Build CSS mesh gradient backgrounds by placing colors — live preview, no upload
• Blob Generator Generate organic blob shapes as SVG or CSS border-radius — randomize, copy, export PNG, no upload
• Glassmorphism Generator Generate frosted-glass (glassmorphism) CSS or Tailwind with a live preview — no upload
• CSS clip-path Generator Build CSS clip-path (polygon, inset, circle, ellipse) by dragging the points — copy the code, no upload
• SVG Wave Generator Generate layered wave SVG section dividers — copy the SVG or CSS background, no upload
• Color Name Finder Find the closest CSS color name from a HEX or RGB value — copy the name, no upload
• Emoji Favicon Generator Turn any emoji into a favicon — copy the no-file SVG <link> or download PNG/.ico, no upload
• Color Palette Generator Generate complementary, analogous, triadic & monochrome color schemes from one color — no upload
• cubic-bezier Generator Drag control points to build a CSS cubic-bezier easing curve with live preview — no upload
• CSS box-shadow Generator Build a CSS box-shadow (offset, blur, spread, color & inset) with a live preview — no upload
• WiFi QR Code Generator Turn your WiFi SSID & password into a connect-on-scan QR code — PNG/SVG, no upload
• vCard QR Code Generator Turn contact details into a scannable vCard QR code (and .vcf) — PNG/SVG, no upload
• Sort Text Lines Sort, deduplicate, shuffle, or trim lines of text — alphabetical, numeric, or by length
• Lorem Ipsum Generator Generate Lorem Ipsum or Japanese dummy text by paragraphs, sentences, or words
• JSON ⇄ CSV Converter Convert a JSON array of objects to CSV and CSV back to JSON, in your browser
• YAML ⇄ JSON Converter Convert YAML to JSON and JSON back to YAML in your browser — config files never leave your device
• QR Code Reader Read the text or URL inside a QR code from an image — no upload
• URL Encoder / Decoder Percent-encode or decode text and URLs, and split a query string into key/value pairs
• Address Book Dedupe & Cleanup Tidy & deduplicate an address book or name list — full-width → half-width, no upload
• Roman Numeral Converter Convert Roman numerals to numbers and back (I/V/X/L/C/D/M) — no upload
• Unit Converter Convert length, weight, temperature, area, speed & data units — no upload
• Password Generator Generate strong random passwords & passphrases in your browser — crypto-secure, no upload
• Image ⇄ Base64 Convert an image to a Base64 data URI and back, in your browser — no upload
• Barcode Generator Generate EAN-13/JAN, EAN-8, UPC-A & Code 128 barcodes — PNG & SVG, no upload

PDF tools

• Images to PDF Combine images into one PDF — reorder, A4 / fit, margins
• PDF to Image Export each PDF page as a PNG or JPG image — no upload
• PDF Merge & Split Combine PDFs, reorder / delete pages, or split each page — no upload
• PDF Stamp / Hanko Place an electronic seal or stamp on a PDF in your browser — no upload
• Add Page Numbers to PDF Add page numbers to a PDF in your browser — formats, position, start page, no upload
• PDF Watermark Stamp a watermark like "CONFIDENTIAL" across a PDF in your browser — no upload
• PDF Extract Text Extract text from a PDF in your browser — keep line breaks, copy or save .txt, no upload
• Rotate PDF Rotate PDF pages 90° and save in your browser — per page or all, no upload

Work & business

• Hanko Maker Japanese name seal → transparent PNG, no upload
• Business Days Calculator Add/subtract business days or count working days between dates, excluding weekends and Japanese holidays. No upload
• Japanese Public Holidays List the public holidays of any year (2000–2099) or check if a date is a holiday — substitute holidays included, all in your browser. No upload
• Time Calculator Add and subtract times (h:mm) and total work hours from start, end and break — in your browser. No upload
• Monthly Calendar Maker Make a printable monthly calendar for any year/month with Japanese holidays — save as PNG or print. No upload
• Yearly Calendar Maker Make a year-at-a-glance calendar with all 12 months on one A4 sheet — January or April (fiscal-year) start, Japanese holidays colour-coded. Save as PNG or print. No upload
• Envelope Address Print (Naga 3 / Kaku 2) Print recipient and sender addresses on a Naga-3 or Kaku-2 envelope, vertical or horizontal — save as PNG or print at actual size. No upload
• Business Card Maker (A4 imposition) Make business cards and lay them out 10-up on A4 to print at actual size — save as PNG. No upload
• Invoice Maker (Japanese, qualified-invoice ready) Fill in a Japanese invoice — items, consumption tax and bank details — and print at A4 actual size or save as PDF. No sign-up, no upload
• Quotation / Estimate Maker (Japanese) Fill in a Japanese quotation (estimate) — items and consumption tax — and print at A4 actual size or save as PDF. No sign-up, no upload
• Receipt Maker (Japanese) Fill in a Japanese receipt — payer, amount, description, revenue-stamp box and tax breakdown — and print at A4 actual size or save as PDF. No sign-up, no upload
• Delivery Note Maker (Japanese) Fill in a Japanese delivery note (or delivery-note + invoice) — items and consumption tax — and print at A4 actual size or save as PDF. No sign-up, no upload
• Purchase Order Maker (Japanese) Fill in a Japanese purchase order (or order form) — items and consumption tax — and print at A4 actual size or save as PDF. No sign-up, no upload
• Expense Report Maker (Japanese) Fill in a Japanese expense report (reimbursement / travel expenses) with per-rate invoice breakdown and print at A4 actual size or save as PDF. No sign-up, no upload
• Japanese Cover Letter / Transmittal Maker Fill in a Japanese cover letter (sofujo) — recipient, sender and an enclosed-documents list — and print at A4 actual size or save as PDF. Switch to a fax cover sheet in one click. No sign-up, no upload
• Meeting Minutes Maker (Japanese) Fill in Japanese meeting minutes (gijiroku) — meeting name, attendees, agenda and action items — and print at A4 actual size or save as PDF. No sign-up, no upload
• Approval Request Maker (Japanese ringisho) Fill in a Japanese approval request (ringisho) — subject, proposal, reason, amount and approval-seal boxes — and print at A4 actual size or save as PDF. No sign-up, no upload
• Letter of Delegation Maker (Japanese ininjo / power of attorney) Write a Japanese letter of delegation (ininjo / power of attorney) — agent, matters, principal — with one-click bank / vehicle / city-office / meeting templates, and print at A4 actual size or save as PDF. No sign-up, no upload
• Japanese Resignation Letter Maker (taishokutodoke, vertical writing) Write a Japanese resignation letter (taishokutodoke / negai) — department, name, last day, addressee — switch vertical / horizontal writing and notice / request in one click, and print at A4 actual size or save as PDF. No sign-up, no upload
• Japanese Resume Maker (rirekisho, JIS / MHLW format) Make a Japanese resume (rirekisho) — name, address, education, work history, reasons for applying — with a date-of-birth-driven era date and age, an on-device ID photo, and print at A4 actual size or save as PDF. No sign-up, no upload
• Japanese Work History / CV Maker (shokumu-keirekisho) Make a Japanese work-history sheet (shokumu-keirekisho / CV) — career summary, one block per company, skills and self-PR — add companies freely, switch oldest / newest first in one click, and print at A4 actual size or save as PDF. No sign-up, no upload
• Monthly Time Card / Timesheet Calculator Fill a monthly time card — clock in/out and break per day — and it auto-totals worked hours with optional 5/10/15/30-min rounding, then print at A4 actual size or save as PDF. No sign-up, no upload
• Overtime Hours Tracker (in-legal / over-8h / night) Enter clock in/out and break per day and overtime is split into within-8h, over-8h, late-night (22:00–05:00) and holiday hours — with scheduled-hours and 5/10/15/30-min rounding, then print at A4 actual size or save as PDF. No sign-up, no upload, time only (no money)
• Paid Leave Grant-Days Calculator (Japan) Enter the date of joining and get the annual paid-leave grant schedule under Japan's Labour Standards Act — grant dates, days granted and your next grant, with proportional grants for part-time. Print at A4 actual size or save as PDF. No sign-up, no upload, time only (no money)
• Shift Schedule / Roster Maker (staff × day) Add staff and type a symbol per day (early/late/night/off) to build a staff-by-day shift schedule — per-staff days and per-day head-count auto-totaled, then print at A4 landscape or save as PDF. No sign-up, no upload
• Duty Roster Maker (auto-rotation) Type member names and auto-assign a cleaning/chore duty roster by round-robin — daily, weekly or by count, across one or more duty columns — then print at A4 actual size or save as PDF. No sign-up, no upload
• Seating Chart Maker (classroom / office) Type names and place them on a rows-by-columns seat grid for a classroom or office seating chart, with a one-click random shuffle (sekigae), then print at A4 actual size or save as PDF. No sign-up, no upload
• Name Tag / Name Badge Maker (A4 imposition) Type names (one per line) to make event / meeting name tags laid out N-up on A4 — choose tag size, an optional header band and cut guides — then print at A4 actual size or save as PDF. No sign-up, no upload
• Japanese Address Splitter Paste Japanese addresses (one per line) and split them into prefecture, city/ward, town & block, and building — copy or save as TSV/CSV. No Excel functions, no upload
• CSV Viewer View CSV as a sortable, filterable table — no upload
• Excel to CSV Convert an .xlsx workbook to CSV in your browser — no upload
• CSV Encoding Converter Fix a garbled CSV — convert between UTF-8, BOM & Shift_JIS — no upload
• CSV Merge Merge multiple CSV files into one in your browser — no upload
• Encoding Converter Convert a text file between UTF-8, Shift_JIS & EUC-JP — no upload
• Mojibake Fixer Paste garbled text and restore it to readable UTF-8 — no upload
• ZIP Maker & Extractor Make and unzip ZIP files in your browser — no upload, no install
• Gantt Chart Maker Type tasks (name, start, end) and get a Gantt chart you can save as PNG — no upload
• Proration Calculator Split a total by ratio (remainders balanced so the sum matches exactly), work out a home-office business %, or pro-rate an amount by days — all in your browser. No sign-up
• Workload (Man-Hours) Calculator Convert workload between person-hours, person-days and person-months, sum a project's tasks, and work out people vs. duration — all in your browser. No sign-up
• Cash Denomination Calculator Break an amount into the fewest bills and coins, build a denomination table for several people with a prep total, or count a till — copy as TSV for Excel, all in your browser. No sign-up
• Japanese Invoice Number Checker Validate a Japanese qualified-invoice registration number (T + 13 digits) — digit count and check digit, several at once, copy as TSV. Format check only, in your browser. No sign-up
• UTM Builder Build a UTM-tagged tracking URL (source, medium, campaign + term/content/id) for GA4 — copy one or collect several and export as TSV. In your browser. No sign-up
• Email Signature Generator Build an HTML email signature with name, company, contacts and an embedded logo — copy formatted into Gmail or Outlook, or grab the HTML / plain text. No upload, in your browser
• Square Seal Maker (Kakuin / Company Stamp) Make a Japanese square company seal (kakuin / shaban) from a name → transparent PNG for invoices in Excel, Word or PDF. No sign-up, no upload
• Signature Maker (draw by hand) Draw your signature with a mouse, pen or finger → save as a transparent PNG for PDF, Word or Excel. Pick color/thickness, auto-trim margins. No upload
• Award Certificate Maker Make an award / appreciation certificate on A4 — title, recipient, body presets, date and signer, with vertical or horizontal writing and a frame. Save as PNG. No sign-up, no upload
• Noshi Paper Maker Make a Japanese noshi gift-wrapper (noshigami) — pick the title (omotegaki) and add names, with mizuhiki cords (knot/color/strands) and a noshi mark drawn for you. Save a white PNG to print. No upload
• File Spine Label Maker Make binder/file spine labels — one title per line, laid out on A4 by spine width (1–8 cm), vertical text and a color band. Save a white PNG or print at actual size. No upload
• Checklist Maker Make a printable checklist — type a title and items (one per line), pick box/circle checkboxes, 1 or 2 columns, stripes and a date/name row. Save a white PNG or print A4 at actual size. No sign-up, no upload
• Address Label Maker Paste an address list (one per line, comma/tab fields) and lay it out on A4 label sheets (12–65 up) — suffixes, 〒 mark and an alignment nudge. Save a white PNG or print at actual size. No Word, no upload
• Attendance Sheet Maker Make a printable attendance sheet — type a title, names (one per line) and status columns (Yes/No/Maybe/Notes), get an A4 roster table. Add a No. column, blank rows and stripes. Save a white PNG or print A4. No sign-up, no upload
• Contact Tree (Phone Tree) Maker Make a contact tree / phone tree — type names, indent a line to show who calls whom, get an A4 tree diagram. Top-down or left-right, with phone numbers. Save a white PNG or print A4. No sign-up, no upload
• Employee ID Card Maker Make an employee ID / staff card from one record — type company, name, department and ID number, add a photo (composited in your browser). Landscape or portrait, card size (85.6×54mm). Print at actual size or save a PNG. No sign-up, no upload
• Phone Message Memo Maker Make a phone message memo (while-you-were-out slip) — type a heading and check items, get To/From/Tel, check boxes and a message area, laid out 1/2/4/6/8 up on A4. Save a white PNG or print at actual size to cut into slips. No template software, no upload
• Org Chart Maker Make a company org chart — type units one per line, indent a line to place it under the one above, get an A4 chart. Top-down or left-right, with roles/titles. Save a white PNG or print A4. No Excel/PowerPoint, no upload

Writing & academic

• Citation Formatter Format references in APA, MLA & SIST 02 — no upload
• DOI/ISBN to Citation Paste a DOI or ISBN → APA, MLA, IEEE, SIST 02, BibTeX & RIS — no upload
• GPA Calculator Calculate GPA from grades & credits — multiple scales, no upload
• Character Counter Count characters, words, lines & manuscript sheets — no upload
• Furigana Add furigana (ruby readings) to Japanese kanji text — no upload
• Hyoki-yure Checker Find & unify inconsistent Japanese spellings (okurigana, kana, katakana) — no upload
• Genko Preview Flow text into 400-square Japanese manuscript paper & save as PNG — no upload
• Kana Converter Hiragana ⇄ katakana, half-width ⇄ full-width — 5 conversions at once, no upload
• Rōmaji Converter Kana ⇄ rōmaji (Hepburn & Kunrei) — both spellings at once, no upload
• LaTeX Equation Preview Render LaTeX math with KaTeX and save it as a PNG image — no upload
• Function Graph Plotter Plot y=f(x) (multiple functions) and save the graph as a PNG — no upload
• Truth Table Generator Build a truth table from any logic expression — classify & compare, no upload
• Find & Replace Text Bulk find & replace across text, with regex, case & whole-word options — no upload
• Remove Line Breaks Strip or normalize line breaks — unwrap PDF text, join into one line — no upload
• Word Frequency Counter Count how often each word, phrase (n-gram) or character appears — CSV export, no upload
• Japanese Readability Checker Measure sentence length, kanji ratio & the kana mix; flag sentences that run long — no upload
• Character Name Generator Generate fantasy, elf, sci-fi & Japanese character names in one click — no upload
• Drawing Prompt Generator Roll a random drawing prompt — subject, pose, setting, mood & a challenge for sketch practice (no AI, no upload)
• Book Title Generator Generate book & novel title ideas by genre, with an optional keyword — fantasy, romance, mystery & more (no AI, no upload)
• Kaomoji Picker Browse Japanese emoticons by mood and copy any one with a click — no upload
• Special Characters Picker Browse arrows, math, currency, brackets & more by category and copy with a click — no upload
• Markdown Table Generator Edit a table in a grid and get clean Markdown — paste from Excel / CSV to convert, set column alignment, copy. No upload
• Fancy Text Generator Turn your text into 20+ Unicode styles — bold, italic, script, fraktur, circled, upside-down — and copy with a click. No upload
• Zalgo Text Generator Turn text into glitchy, corrupted zalgo with adjustable intensity — copy & paste anywhere. No upload
• Upside-Down Text Generator Flip text into upside-down Unicode — reads right when you turn your screen. Copy & paste anywhere. No upload
• Strikethrough Text Generator Add a strikethrough, slash, wavy, or underline to text with Unicode — copy & paste anywhere. No upload
• Bubble Text Generator Turn text into bubble letters — outline Ⓐ or filled 🅐 circled Unicode you can copy & paste. No upload
• ASCII Art Banner Generator Turn text into a big ASCII-art block banner — pick the fill character, copy & paste. No upload
• Word Cloud Generator Paste text or a keyword list and build a word cloud where common words are bigger — pick split mode, max words, font, size range, colors, rotation and background, then export PNG — no upload
• Doujin Colophon (Okuzuke) Generator Fill in a doujinshi's colophon fields (title, date, circle, contact, printer, notices) and get both copy-paste text and a body-size PNG (A5 / B5 / A6 / shinsho) to drop into Clip Studio or Word — no upload

Daily life · Japan

• ID Photo Passport / visa / resume photo + print sheet — no upload
• Resale Profit Marketplace profit: fees, shipping, margin & break-even
• Wareki Japanese era ⇄ year, age & business-day calculator
• Recipe Scaler Rescale recipe ingredients by servings — no upload
• Cooking Units Cups ⇄ ml ⇄ grams by ingredient density — no upload
• Japanese Gift-Money Guide Customary goshugi, koden & otoshidama amounts by relationship and age — no upload
• Age Calculator (Full Age & Kazoedoshi) Calculate exact age from a date of birth — full years, kazoedoshi, days lived & next birthday. No upload
• Date Difference & Add/Subtract Days Days between two dates (weeks, Y/M/D, business days) and the date N days/weeks/months/years before or after. No upload
• Fuel Cost & Fuel Economy Calculator Fuel cost from distance, economy and price/L — with liters, per-person split and cost/km. Also real km/L from liters. No upload
• Electricity Cost Calculator Appliance running cost from power (W), hours and price (¥/kWh) — daily, monthly, yearly plus CO₂. Also cost from kWh. No upload
• Random Picker (Name Draw) Paste names or items, one per line, and randomly pick winners — choose how many, allow repeats, spin-style animation. No upload
• Random Team / Group Generator Paste names, one per line, and randomly split them into teams or groups — by team count or members per team, sizes nearly even. No upload
• Amidakuji Maker (Ladder Lottery) Enter participants and results to generate a random amidakuji (ghost-leg) ladder — tap a name to trace its path. No upload
• Bingo Card Generator Make printable bingo cards in bulk — classic numbers or your own word list. Pick the FREE space and grid size, then print. No upload
• Word Search Maker Make a printable word search from your own words — across, down and diagonal, with difficulty and an optional answer key. A–Z, hiragana or katakana. No upload
• Maze Maker Make a printable maze in your browser — pick a difficulty and generate a fresh maze, with an optional answer key. Print or save as PDF. No upload
• Sudoku Maker Make a printable sudoku in your browser — pick a difficulty, generate single-solution puzzles, 1–6 per page, with an optional answer key. Print or save as PDF. No upload
• Flashcard Maker Make printable flashcards in your browser — type fronts and backs, choose cards per page, and print double-sided with the back sheet mirrored so answers line up. Save as PDF. No upload
• Rokuyo Calendar (Taian / Butsumetsu) Monthly calendar of the six Japanese rokuyo days (Taian, Butsumetsu, etc.) with the lunar date, computed in your browser. No upload
• Super Chat Fee Calculator How much creators get from a Super Chat / membership / Twitch sub — platform + app-store fees (iPhone / Android / PC), no upload
• Zodiac & Birthstone Finder Find Chinese zodiac, star sign, birthstone & birth flower from a birth date — no upload
• Nengajo Layout Lay out a New Year / mourning postcard (hagaki) for print — no upload
• Number to Kanji Convert numbers to kanji / daiji (formal) — for gift envelopes & receipts
• Shipping Compare Find the cheapest flat-rate way to ship a parcel by size & weight (JP)
• Warikan (Bill Split) Split a bill with rounding, tiered shares, and an organizer who absorbs the remainder
• Tip Calculator & Splitter Work out the tip and total from the bill and a tip %, then split it between any number of people — quick 10/15/18/20% presets, round-up option. No upload
• Consumption Tax Calculator Add or strip Japanese consumption tax — tax-included/excluded, 8% & 10%
• Japanese Units Converter Convert Japanese traditional units (shakkanho) and metric — tsubo, shaku, go, monme
• Time Zone Converter & World Clock See many cities' current time at once, with the difference from a base city
• Baggage Size Checker Check if a bag fits airline carry-on & checked baggage rules by size and weight
• Paper Size Chart A & B paper sizes in mm, cm, inch and pixels at any DPI — plus an mm⇄px converter
• Graph Paper Maker Make printable graph paper — square, dot, lined, isometric or hexagon grids at an exact mm spacing on A4/A5/B5/Letter, set color, line weight and bold lines, then print or save SVG/PNG — no upload
• Music Staff Paper Maker Make printable blank staff (manuscript) paper — single staff, grand staff (piano), guitar TAB or bass TAB on A4/A5/B5/Letter, set staves per page, line spacing, color & weight, then print or save SVG/PNG — no upload
• Habit Tracker Maker Make a printable habit tracker — monthly (days 1–31) or weekly (weekdays) — by typing your own habits, at true A4/A5 size, then print or save SVG/PNG — no upload
• Weekly Planner Maker Make a printable weekly planner — 7 days or Mon–Fri, with hourly time slots or blank rows — at true A4/A5 size, then print or save SVG/PNG — no upload
• Clothing Size Converter Convert clothing sizes between S/M/L, Japan, US, UK, EU & cm — no upload
• Shoe Size Converter Convert shoe sizes between Japan (cm), US, UK, EU & foot length — no upload
• Ring Size Converter Convert ring sizes between Japan (go), US, UK, EU & inner diameter (mm) — no upload
• Card Sleeve Size Finder Find the right sleeve size for your trading card or K-pop photocard — pick the card (or enter mm) and see which sleeves fit snug vs. loose, with 100-yen / brand inner sizes — no upload
• Moon Age & Baby Age Moon age, phase & illumination for any date — plus a baby's age in months
• Pet Age in Human Years Convert a dog or cat's age to human years (by size) with life stage
• Vertical Text to Image Typeset Japanese vertical text (tategaki) and export it as a transparent PNG — no upload