Introducing the OnDevicePDF Chrome Extension: Local-First PDF Editing

Most PDF tools on the market are secretly mining your documents. You upload a tax return to merge it, wait 30 seconds for a server to process it, and have absolutely no idea if that file was permanently deleted.

It makes about as much sense as giving a stranger your wallet so they can hand you a dollar.

We wanted to fix the plumbing. Today, we are releasing the official OnDevicePDF Chrome Extension. It brings the power of our zero-upload PDF editor directly to your browser toolbar.

Why Build an Extension?

When you format a document or extract a page, you shouldn't have to navigate to a new site, upload a file, and stare at a loading spinner. The extension acts as a trapdoor to our WebAssembly-powered processing engine.

OnDevicePDF compiles the heavy lifting of PDF manipulation directly into your browser. No backend. No upload spinners. No file size limits. Whether you need to merge highly confidential medical records or compress an invoice, the data never leaves your laptop’s RAM.

Once loaded, it works entirely offline.

Features Available in the Toolbar

• Merge PDFs: Combine multiple documents into a single file instantly.
• Split PDFs: Extract specific pages or split documents into individual files.
• Compress PDFs: Shrink large files for email attachments without losing quality.
• Image to PDF & PDF to Image: Quick, secure local conversion.
• 100% Client-Side Processing: Your files never touch network infrastructure.

The Privacy Guarantee

We don't have user accounts. We don't have a backend database for your files. We don't spy on your documents. Because we don't pay for processing servers, we don't have to charge for the core tools. The extension simply provides a faster workflow to our local-first architecture.

Try turning off your Wi-Fi after opening the tool and merging a 500-page document. The results are instantaneous.

Don't trust third-party servers with your documents. Install the OnDevicePDF Extension today.