Every PDF tool, and not one upload
Most free PDF sites work the same way: you hand them your file, their server does the work, and you trust the promise that it gets deleted afterwards. For a holiday itinerary that is fine. For a contract, a payslip, a medical letter or a scan of your passport, you have just emailed a stranger your document.
Every tool on this page runs as JavaScript inside the tab you are reading. Your PDF is opened from your own disk, processed by your own processor, and saved straight back to your downloads folder. There is no upload step to trust, because there is no upload — you can disconnect from the internet after the page loads and most of these still work.
Where to start
- Too big to email? Compress PDF
- Several files, one document? Merge PDF, then Organize PDF to get the order right
- Needs signing? Sign PDF, or Fill PDF Forms if it is an interactive form
- Sensitive details to remove? Redact PDF — not a black rectangle in an editor, which leaves the text underneath readable
- A scan you cannot search? OCR PDF
- Need to edit the words? PDF to Word or PDF to Markdown
- Going out to clients? Watermark PDF and Add Page Numbers
Frequently asked questions
Are these tools really free?
Yes — no account, no page limit, no file-size tier and no watermark on the output. The site is paid for by the ad slots you can see, not by upselling you a subscription halfway through a conversion.
How can PDF processing work without a server?
Browsers have become genuinely capable: open-source libraries like pdf.js and pdf-lib read and write the PDF format in JavaScript, and WebAssembly lets heavier engines such as the Tesseract OCR engine run locally at close to native speed. Everything here is built on those.
Is there a file size limit?
No fixed limit, but your device's memory is the practical ceiling. A few hundred pages is routine; a 500 MB scanned archive may be slow on a phone. Split very large files first.
Do I need to install anything?
No. Any current browser on any operating system — including iOS and Android — is all you need.
Which tools need an internet connection?
Only the initial page load, plus OCR PDF the first time you use a new language, because it downloads that language's training data. After that your browser caches it.