Most free PDF sites keep a copy of your file
Online PDF tools usually upload your document to their servers, where it is processed, stored for a while, and out of your control. That is a real risk for contracts, bank statements, medical records and ID scans. PDFLalssi works differently: everything happens inside your browser, so there is nothing to upload and nothing to leak.
Main tools
Merge PDF
Combine multiple PDFs into one document in seconds.
Split PDF
Split a PDF into separate files by page ranges.
Compress PDF
Reduce file size while keeping the best possible quality.
Extract Pages
Extract only the pages you need into a new PDF.
Remove Pages
Delete unwanted pages from your PDF.
Organize PDF
Reorder, rotate, and arrange pages exactly how you want.
Edit tools
Add Text
Type text anywhere on the page — full RTL support.
Add Image
Insert images, logos, or photos directly into your PDF.
Page Numbers
Add page numbers with custom position and format.
Crop PDF
Trim margins and clean up scanned pages.
Rotate PDF
Rotate pages or the entire document in one click.
Watermark
Stamp text or image watermarks on every page.
Protect PDF
Encrypt your PDF with a password.
Unlock PDF
Remove a known password and unlock your PDF.
Compare PDFs
Compare two PDFs side by side and spot every change.
Sign PDF
Draw, type, or upload your signature.
Repair PDF
Recover data from corrupted or damaged PDFs.
Convert tools
Why PDFlalssi
Private by design
Every operation runs locally in your browser. Your PDFs are never uploaded to a server.
Instant & fast
No uploads, no queues, no waiting. Libraries load once and are cached by your browser.
Multilingual
Full Arabic, Hebrew, Chinese, Japanese, Korean and RTL support. OCR in 30+ languages.
Free forever
No accounts. No watermarks. No paid tiers. Every tool, every feature — free for everyone.
Don't trust us. Check it yourself.
Open the Network tab
In any tool, press F12 (Cmd+Option+I on Mac) and open the Network tab.
Run a tool
Add a PDF and process it as usual.
See nothing leave
Your file is never sent anywhere. Processing happens on your device.
Ready to simplify your PDF workflow?
Pick a tool and start working instantly. No sign-up, no uploads, no waiting.
Browse all tools →