PDF tools31 tools
Every PDF operation we ship runs in your browser via WebAssembly. Repair, merge, split, compress, convert to and from Word, rotate, watermark, add page numbers, export to images. Nothing leaves your device.
All tools
31 livePrivate PDF tools that never upload your files
Every PDF tool on this page runs entirely in your browser. Convert PDF to Word or JPG, turn Word documents into PDFs, merge, split, compress, rotate, sign, protect — the processing happens on your own device using WebAssembly, so your document is never uploaded to a server. There is no copy of your file on anyone’s infrastructure to be retained, leaked, or handed over.
That architecture matters most for the documents people actually use PDF tools for: contracts, tax returns, medical forms, payslips, anything with personal data. A conventional online converter asks you to upload the file first and trust a deletion policy. Here there is nothing to delete — and you don’t have to take that on faith. Open your browser’s Network tab while a tool runs, or disconnect from the internet after the page loads and convert anyway.
Privacy is not a paid option: there is no account, upload server or cloud-retention window. Ads and aggregate analytics remain outside the file-processing boundary. The tools are also free to use with no watermark.
Questions
Is it safe to use a free online PDF tool?
It depends on where the processing happens. Most free PDF sites process your file on their servers, which means uploading your document and trusting their retention policy. AntiUpload processes the file in your browser — the contents never leave your device — so the usual upload risk simply doesn’t exist. You can verify this in your browser’s Network tab.
Do these PDF tools work offline?
Yes. Once a tool’s page has loaded, you can disconnect from the internet and it still works — which is also the simplest proof that your file isn’t being uploaded.
Is there a file size limit?
No fixed cap. Because the work happens on your device, the practical limit is your machine’s memory rather than a server quota — most laptops handle very large PDFs comfortably.
Do I need an account?
No. There is no signup, no email step, and no daily limit to work around. Open a tool, drop your file, download the result.
How are free tools with no paywall sustainable?
The site is supported by unobtrusive ads. That model doesn’t require gating features, watermarking output, or collecting your documents — which is the point.