PDF SECURITY
Free Redact PDF online
Black out sensitive information.
Redact PDF is a free browser tool that lets you black out sensitive information. Add your PDF, adjust the Redact PDF options if you need to, then download the result immediately. Redact PDF works on your device only, so no file or text is ever uploaded.
- Free to use
- No signup
- No uploads
- Works offline
Why use Redact PDF
- black out sensitive information without installing software
- Your PDF is processed on your device by Redact PDF, never uploaded
- Redact PDF needs no account, email address or payment details
- Redact PDF is batch-friendly: reuse it immediately on the next file
- Redact PDF is keyboard accessible and screen-reader friendly
- Redact PDF is free forever, with no watermark on the result
Redact PDF runs entirely inside your browser. Your PDF is never uploaded, stored or shared, and nothing is retained once you close the tab.
How to use Redact PDF
- Add your PDF Drag your PDF onto the drop zone or pick it from your device.
- Adjust the options Set the options that control how Redact PDF handles your input.
- Run the tool Redact PDF works instantly on your device, with no queue and no upload wait.
- Download the result Save the finished file straight to your device, then reuse the tool as often as you like.
Benefits
Private by design
Your PDF stays on your device while Redact PDF works. Redact PDF never sends it to a server, so confidential work stays confidential.
Instant results
There is no upload step, so Redact PDF starts the moment you add your PDF.
No signup, no limits
Use Redact PDF as many times as you want. Redact PDF asks for no account, adds no watermark and keeps no paid tier gating the output.
Works offline
Once the page has loaded, Redact PDF keeps working without a connection, which helps on flights and locked-down networks.
Who it is for
For legal and finance teams
Legal and finance teams use Redact PDF to handle sensitive documents without installing software: black out sensitive information on a shared or locked-down machine.
For HR and admin teams
Redact PDF helps HR and admin teams process paperwork quickly, since your PDF never leaves the laptop it was created on.
For freelancers
Redact PDF helps freelancers send client deliverables quickly, since your PDF never leaves the laptop it was created on.
How it works
Redact PDF loads your PDF into memory, applies the change you requested to the underlying data rather than to a screenshot of it, and writes a fresh copy for download. Your original stays untouched on disk, and every step of Redact PDF happens inside your browser sandbox.
Frequently asked questions
Is Redact PDF free to use?
Yes. Redact PDF is completely free with no account, no trial and no usage cap. Every feature on this page is available on the first visit.
Does Redact PDF upload your PDF to a server?
No. Redact PDF processes your PDF inside your browser, so it never reaches a DocTools server. That also means the tool keeps working if your connection drops mid-task.
Is there a file size limit?
The practical ceiling is your device's available memory rather than a server quota. Files up to roughly 100 MB work comfortably on a typical laptop in Redact PDF.
Do I need to install anything to use Redact PDF?
No installation is needed. Redact PDF runs in Chrome, Edge, Firefox and Safari, on desktop and on mobile, with no extension or plugin.
Can I use Redact PDF on a phone or tablet?
Yes. The Redact PDF interface adapts to small screens and supports touch input, though very large jobs are faster on a desktop browser.
What happens to your PDF when I close the tab?
It is discarded. Redact PDF keeps everything in temporary browser memory, so closing the tab removes every trace of the session.
Related tools
- Merge PDF | Combine multiple PDFs into one document
- Split PDF | Separate a PDF into individual pages
- Remove Pages | Delete unwanted pages from your PDF
Last updated: 2026-09-07