PDF tools that process files on your device, not on a server

Most online PDF tools work by uploading your file to their server, processing it there, and sending the result back. That is a reasonable way to build a website and a bad way to handle a salary slip, an ITR acknowledgement, an Aadhaar scan, a marksheet, or a medical report. Once the file is on someone else's machine, you are trusting a privacy policy.

PDF Kaam does the processing in your browser instead. The tools are compiled to WebAssembly and run inside the tab, using your own device's CPU. Your file is never transmitted anywhere. You can verify this yourself: open your browser's developer tools, switch to the Network tab, and run any tool — you will see no upload request.

Because the server does no work, the usual restrictions have no reason to exist. There is no two-tasks-per-hour cap, no watermark on free output, no account wall after your first file, and no paid tier required to process a file larger than 5MB.

Questions

How can a PDF tool work without uploading the file?
The PDF libraries are compiled to WebAssembly and shipped to your browser as part of the page. Your browser then runs them locally, in a Web Worker, on the file you picked. This is the same code that would normally run on a server, moved to the client side.
Is PDF Kaam free?
Yes. Every tool listed here is free and unlimited, with no signup and no watermark.
Are my files uploaded to a server?
No. Every tool on this site runs inside your browser tab using WebAssembly. Your file is read from your disk into the tab's memory, processed there, and written back out as a download. It is never sent over the network, so there is no server copy to leak, subpoena, or forget to delete.
Do I need to create an account?
No. There is no signup, no email, and no login on any tool. You can use every tool an unlimited number of times without identifying yourself.
Is there a file size limit or a daily limit?
There is no daily limit and no artificial size cap. The real ceiling is your device's memory: roughly 200-500MB per file on a desktop, and closer to 50-100MB on a low-end Android phone. Past that the browser tab can run out of memory.
Is the output watermarked?
No. Output files are clean. Nothing is stamped on them, and no page is added.
Does it work on a phone?
Yes. The tools run in any modern mobile browser, including Chrome on Android and Safari on iOS. Large files are slower on a phone than on a laptop because the processing happens on the device itself.
Does it work without an internet connection?
You need a connection to load the page the first time. Once the page has loaded, the actual PDF processing needs no network at all — you can turn off your Wi-Fi before pressing the button and the tool will still work.