Free tools. No uploads. No sign-up.
ToolBurrow runs every tool inside your browser — compress images to exact sizes, merge and split PDFs, and get today's puzzle hints. Your files never leave your device.
Image tools
Compress image
Compress JPG, PNG or WebP images to an exact file size like 20KB, 50KB, 100KB or 200KB — free, private, no upload. Perfect for online form photo and signature requirements.
Resize image
Resize any image to exact pixel dimensions or by percentage, right in your browser. Free image resizer with no upload and no watermark.
Convert image
Convert images between PNG, JPG and WebP formats instantly in your browser. Free, private, no upload required.
PDF tools
Merge PDF
Combine multiple PDF files into one document, in your browser. Free PDF merger with no upload — your files never leave your device.
Split PDF
Extract pages from a PDF or split it into separate one-page files. Runs entirely in your browser — free and private.
Images to PDF
Turn JPG and PNG images into a single PDF document. Free, no upload, no watermark — everything happens in your browser.
Daily puzzles
Why browser-based tools?
Most "free online tools" upload your file to a server, keep it in a queue, and give it back watermarked. ToolBurrow works differently: modern browsers are powerful enough to compress images and rebuild PDFs on your own device. That means instant results, total privacy (nothing to upload means nothing to leak), and no file size games. The tools are free forever and supported by ads.