Redact PDF
Draw redaction boxes over sensitive content — names, numbers, addresses — and burn them into the PDF permanently. The underlying text is stripped, not just covered, keeping data truly hidden.
or drop files here
Tip: select a single file.
How to use Redact PDF
- 1Click "Select PDF file" and choose the PDF containing content you want to redact.
- 2Draw redaction boxes over any text or images you want to permanently remove.
- 3Click Apply Redactions. The content is irreversibly removed and the PDF is downloaded.
Why use PDF Lab
- Permanently remove sensitive text and images with black-box redactions.
- Files stay on your device — nothing is uploaded to any server.
- No account, no signup, no watermark on the output.
- Free to use with no per-file limits beyond your device's memory.
- Works on desktop and mobile browsers, including offline after first load.
- Redacted content cannot be recovered — the underlying data is gone, not just hidden.
- Ideal for legal, medical, and compliance document workflows.
Your file never leaves your browser
Redact PDF runs entirely on your device using pdf-lib and pdf.js — both self-hosted by PDF Lab, so no third-party CDN sees your traffic. There is no upload, no account, no log of your file.
How browser-based PDF processing works →Redact PDF — questions
- No. Every operation runs in your browser using JavaScript. Your file is loaded into your browser's memory, processed, and a result is saved to your device. Nothing is sent over the network.
- No. Because the processing happens in your browser, neither PDF Lab nor any third party has access to the file contents. You can verify this by opening your browser's network tab while using the tools — no file data is transmitted.
- There is no enforced limit, but performance depends on your device's memory. Most modern browsers comfortably handle PDFs up to about 100 MB. Very large files may slow down your browser tab.
Are my files uploaded to your server?+
Can PDF Lab see the contents of my files?+
Are there file size limits?+
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