Merge, split, compress and more — every tool runs entirely on your device. Your files never touch a server. No limits, no sign-up, no watermarks.
A complete PDF suite that runs in your browser. Pick a tool, drop your file, get it back. It never leaves the tab.
Combine files into one, in the order you choose.
→Break a document into pages or custom ranges.
→Shrink file size while keeping it readable.
→Hit an exact size for exam & gov portals.
→Turn pages the right way up, permanently.
→Reorder, delete and rearrange by drag & drop.
→Turn images into a clean, shareable PDF.
→Export every page as a high-res image.
→Add a password — encrypted on your device.
→Draw or type a signature and place it.
→Stamp text or a logo across your pages.
→Make scanned PDFs searchable — locally.
Everything happens inside your browser tab using your own device. Your documents are never sent anywhere — there's no server to send them to.
Because your device does the work, we don't pay per task — so there are no daily caps, no "2 files a day," no sign-up walls. Use it all day.
No Docker, no desktop app, no extension. Open the page and go. The privacy of self-hosting, with the ease of a website.
The popular tools are great — but they upload your files and ration the free tier. Here's the trade-off, plainly.
| CorePDFTools | iLovePDF / Smallpdf | Stirling PDF | |
|---|---|---|---|
| Files stay on device | Always | Uploaded | Yes (self-host) |
| Daily task limits | None | Yes | None |
| Sign-up required | Never | Often | No |
| Watermarks | Never | On some tools | None |
| Setup needed | None | None | Docker / server |
| Price | Free | Freemium | Free (OSS) |
CorePDFTools is part of a small family of independent, free, no-nonsense web tools — calculators, converters, and developer utilities. No sign-ups, no limits.
Pick a tool and try it — there's nothing to sign up for, and your file never leaves this tab.
Open a tool now →