About siutil
siutil is a collection of free browser tools for everyday tasks: editing images and videos, recording and converting audio, organizing PDFs, making printable sheets and working with text.
Use tools without installation or registration
Open a tool, load a file or enter your content, then review and save the result. Each tool page explains how to use it, the formats it supports and its limitations.
Examples include image pixelation, video compression, PDF merging and splitting, and printable name tags. Browse by purpose or category on the home page.
Process files in your browser
Files and text entered into our tools are processed on your device. We do not upload this processing data to a siutil server or send it for advertising. Some features connect to download required programs or models, or to retrieve public data.
See our privacy policy for details about advertising, cookies, saved settings and information sent when you contact us.
Review your results
Supported formats and file-size limits vary by tool and depend on your browser and device. Keep the original file and check the output before using it.
Calculations and generated documents help with your work; they do not replace professional advice or official information for important legal, medical or financial decisions. Use images, documents and other materials only when you have the necessary rights.
Operation and contact
The siutil site operator creates and maintains the tools. The site includes Google AdSense code and may display ads subject to approval and settings. For bugs, suggestions, privacy or rights concerns, visit our contact page.