PDFIntro
on-device pdf workspace
100% on-device · nothing uploaded

The PDF workspace that never sees your files.

Merge, split, convert, compress and edit PDFs right in your browser. Every operation runs locally on your device — no servers, no queues, no accounts.

Popular tools

the essentials, all on-deviceAll tools →

Why PDFIntro

privacy is the architecture, not a setting

Nothing is uploaded

Every operation runs in your browser using WebAssembly and JavaScript. Your documents are never transmitted to a server.

No accounts, no queues

There is no backend to wait on. Open a tool, drop a file, get a result — instantly, offline-capable after first load.

Genuinely fast

Because there is no round-trip to a server, most operations finish in the time it takes to read this sentence.

How it works

three steps, zero uploads
01

Pick a tool

Choose from organise, convert, edit and optimise tools — or hit ⌘K to jump straight there.

02

Drop your file

Drag a PDF or image in. It loads into memory on your device, never to a server.

03

Download

The result is generated locally and saved straight to your downloads folder.

Explore by category

6 families of tools

Simple pricing

core tools are free, foreverFull pricing →
Free
$0
  • All core PDF tools
  • 100% on-device processing
  • Merge, split, convert, compress
  • Local activity history
Start free
Placeholder
Business
Custom
  • Everything in Pro
  • Commercial licensing
  • Team preset sharing
  • Priority roadmap input
Contact us

Questions

the short versionFull FAQ →
Correct. PDFIntro has no server that receives documents. Files are read directly in your browser and all processing happens on your device using PDF-lib and PDF.js.
After the first load the core libraries are cached by your browser, so most tools keep working without a connection.
The only limit is your device’s available memory. Very large files (hundreds of pages) are handled, but rasterising tools like compress will use more RAM.
No. There are no accounts and no sign-up. Any history you see is stored only in this browser and you can clear it anytime.
All core tools are free. Future Pro and Business tiers will add advanced batch workflows, but on-device processing stays the default.