About ToolsKit
ToolsKit is a collection of 30+ free online tools for PDFs, images, calculators, development and everyday text work. It exists for one reason: most "free" tool websites take your files.
Why files never leave your device
On most tool sites, the file you drop into the page is uploaded to a server, processed there, and sent back. That means your contracts, invoices, ID scans and photos travel through — and are often temporarily stored on — someone else's computer.
We took the other path: every tool here is written in JavaScript that runs inside your browser tab. When you merge a PDF or compress an image, your processor does the work, your memory holds the file, and your network connection isn't used at all. It's faster, it works offline once loaded, and your documents stay yours.
Free, and how it stays that way
No accounts, no daily limits, no watermarks, no "pro" upsells. The site is supported by unobtrusive advertising — that's it. Building on open-source libraries (pdf-lib and pdf.js) keeps costs near zero, so the tools stay free for everyone.
Contact
Found a bug or want a new tool? Your feedback shapes the roadmap — reach us at support@toolskit.app.