About

Why we built this

A PDF tool that genuinely cannot upload your files — because there's no server to upload them to.

The problem with every other PDF tool

Every time you use Smallpdf, iLovePDF, Adobe Acrobat Online, or any other "free PDF tool" — your file is uploaded to a server. That server processes it, holds it for some retention period (ranging from 1 hour to indefinitely depending on the service), and then sends the result back. For most documents, this is annoying but tolerable.

But PDFs aren't usually trivial documents. They're contracts, tax returns, scanned IDs, medical reports, salary slips, signed agreements, bank statements. These are the files you'd hesitate to email to a stranger. Yet the most-used PDF tools work by sending your documents to a server run by a company you know nothing about, staffed by people you've never met, subject to data breach risks you can't control.

We looked at this situation and asked a simple question: does a PDF tool actually need a server?

The answer turned out to be no

Modern browsers can do everything you need for everyday PDF work — locally, without any network activity after the page loads. The key is a combination of three open-source libraries:

  • pdf-lib — creates, modifies, and saves PDFs entirely in JavaScript
  • pdf.js — Mozilla's open-source PDF renderer, renders pages to canvas
  • JSZip — bundles multiple files into a zip download

None of these libraries require a server. They run inside your browser tab, read your files into local memory, process them, and save the result directly to your device. When you close the tab, the files are gone — because they were never stored anywhere.

You can verify this yourself. Open any tool on this site, start a conversion, and watch your browser's network tab. You'll see the CDN libraries load on first use — but you'll see zero file upload activity. The bytes that make up your document never leave your machine.

What we built

Five free tools, covering the five most common PDF tasks people search for online every day:

Image to PDF — Convert JPG and PNG files to a single PDF
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Merge PDF — Combine multiple PDFs into one
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Split PDF — Extract specific pages by range
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Compress PDF — Shrink PDFs for email and upload portals
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PDF to JPG — Render each page as a high-resolution image
→

What's coming

We're working on more tools in the same model — Rotate PDF, Delete Pages, and a Word Counter are next. Longer term, we're considering a paid desktop app for users who need features browsers can't do: true text-preserving compression (via mupdf-wasm), OCR on scanned documents, and batch processing.

If there's a tool you wish existed — or one that exists on other sites but you'd want a private version of — tell us.

Contact

Found a bug? Have feedback? Want to suggest a tool?
Email: hello@fastprivatepdf.com — we read everything.