Removed, not covered
The parts you black out are erased from the page for good, not just hidden under a rectangle. There's nothing left to copy or recover.
Fully private · free · works offline
Redact a PDF and delete the text, not just hide it.
Remove sensitive text and hidden details from any PDF, permanently. blakstrip runs entirely on your device, so your file is never uploaded, shared, or seen by anyone.No upload. No account. No tracking.
How it works
Stays on your device
Your PDF is redacted right in your browser and never sent anywhere. You can check for yourself that nothing leaves your device, and it works offline too, with no account and no tracking.
Finds what's hidden
Before you start, blakstrip points out the hidden things in your file, like the author's name, comments, and attachments, and clears them out too.
Proof, not promises
When you're done, blakstrip checks the finished file and shows you anything that could still be read, so you download knowing it's clean.