If you handle PDFs every week — invoices to scan, contracts to sign, scanned reports to compress before emailing — you have probably bounced between three or four different web services, each asking you to upload files, watch a slow progress bar, and trust their privacy policy. Ai2Done's PDF toolkit is built around a different idea: the browser is finally powerful enough to do all of this on your own device, and once it is, you should never need to upload a confidential file to a stranger again.
This collection brings together our most-used PDF utilities in one place. You can merge dozens of documents into a single binder, split large PDFs by page range or by every N pages, compress high-resolution scans down to email-friendly sizes, and convert between PDF and the formats your colleagues actually use — Word, JPG, plain text. Beyond conversion, the editor lets you add text, signatures, stamps and freehand annotations, while the security tools let you set or remove passwords and add visible watermarks.
The engine behind all of this is pdfcpu compiled to WebAssembly, which means parsing, page manipulation, encryption and re-encoding all happen in a sandboxed runtime inside Chrome, Firefox, Safari or Edge. There is no server upload, so file size is limited only by your device's RAM (a modern laptop comfortably handles 500 MB+ PDFs). For password operations especially this matters: an encrypted PDF never leaves your machine, so the password itself cannot be intercepted or logged.
Typical users include legal teams who need to redact and re-paginate discovery documents without a cloud round trip, students assembling research bundles from many sources, accountants preparing year-end statements, and small business owners who simply want a free, fast alternative to expensive desktop suites. The tools share a consistent macOS-style UI, support drag-and-drop for batches, and provide a single-click reset to start over.
If you are new to the toolkit, a good place to start is Compress PDF for shrinking a scan, Merge PDF for assembling several files, or PDF to Word for getting an editable copy of a report. Power users will appreciate the rearrange-pages editor, the bulk image extractor, and the e-signature flow that produces fully self-contained signed PDFs. Whichever you reach for first, the underlying promise is the same: your files stay on your device, processing is fast, and the answer arrives in seconds rather than minutes.