Step 1: Upload your file
Click to upload or drag your PDF in. Files over 100MB and documents with a large number of pages are handled the same as smaller ones.
Your Redacted PDF is ready!
Click to upload or drag your PDF in. Files over 100MB and documents with a large number of pages are handled the same as smaller ones.
Apply redaction over text, images, or entire sections using box, line, or freehand drawing, with automatic snap-to-text for precise selection.
Hit convert and the marked content is permanently removed, not just visually covered.
Your newly generated PDF is ready to download, containing only the text and data you chose to keep.
Use box, line, or freehand drawing to cover text, images, or sections for redaction. Zoom and snap-to-text make it simple to target exact areas without affecting surrounding content.
Redactions are irreversible, stripping metadata and underlying text to prevent recovery. This is what makes the tool suitable for compliance-sensitive work, since redacted content isn't just hidden, it's gone.
Search for specific words or phrases and redact every occurrence automatically across the entire document, rather than hunting for each instance manually.
Upload multiple PDFs and apply redactions to all of them at once, with consistent patterns or custom adjustments per file. This streamlines handling large document sets efficiently.
View redacted areas in a real-time preview, with layers to toggle visibility, so you can confirm exactly what will be removed before finalizing the conversion.
Redactions run on powerful servers for quick results, even on detailed or large files, keeping your device light while delivering secure output.
Files are protected with advanced encryption during upload and deleted from servers after redaction completes, minimizing risk and keeping confidential documents protected throughout.
Redactions maintain the PDF's original appearance and quality, with smooth blackout that blends seamlessly into the surrounding content.
Redact from any device or browser, adapting to quick privacy fixes or more complex documents. All PDF formats are supported, from simple to complex files.
Auto-detects sensitive patterns like emails or numbers for suggested redactions, an AI-driven feature that speeds up reviews and sets the tool apart for compliance-focused work.
Guided tools with tips make redaction accessible even for first-time users, reducing the learning curve while keeping precision front and center.
Handles single pages or bulk redactions without slowdowns, using cloud power that's reliable for personal privacy fixes or enterprise-level document sanitization.
Redact personal details like names or addresses from shared reports, keeping sensitive data hidden while still distributing the underlying insights.
Lawyers can blackout confidential information in court filings before sharing, maintaining client privacy during collaborations and preventing leaks in sensitive cases.
Researchers can redact participant IDs or locations from PDFs intended for publication, protecting ethics commitments while still allowing data sharing for peer review or journals.
Individuals can remove sensitive numbers or addresses from financial PDFs before storing them, creating shareable versions for advisors without exposing full details.
Marketers can redact internal notes or pricing from promotional PDFs before public release, keeping strategy confidential while distributing clean versions to clients.
Teachers can redact student names from example assignments used as training material, protecting privacy when sharing samples for workshops or online resources.
Not every way of "hiding" content in a PDF counts as redaction, and the difference matters if the document is ever shared.
A black box drawn over text without removing the underlying content isn't redaction, it's just a visual cover. The text is often still selectable, copyable, or recoverable underneath, which defeats the purpose entirely if someone copies and pastes the "hidden" area.
True redaction removes the underlying text and image data itself, not just what's visible on screen. That's what makes a redaction tool different from simply drawing a shape over sensitive content in a general PDF editor.
Metadata is a separate risk worth checking A PDF's properties, author fields, or embedded document history can sometimes retain information even after visible content is redacted. Proper redaction strips this alongside the visible content rather than leaving it behind in the file's metadata.
This is also why redaction and simply deleting a page aren't interchangeable, and why redaction tools are treated differently from ordinary editing tools: the whole point is that once something is redacted, it's actually gone from the file, not hidden behind a layer someone could peel back.
Redact PDF, Protect PDF, and Sign PDF are all security-adjacent, but they solve different problems.
Redact PDF (this tool) permanently removes specific content from a document before anyone else sees it. Once redacted, the original text or image is gone from that file entirely, not just visually hidden.
Protect PDF controls who can open a file at all, by requiring a password, without changing anything inside the document. Use Protect PDF when the goal is restricting access rather than removing content.
Sign PDF adds a digital or electronic signature for approvals, and doesn't restrict access or remove any content either. Use Sign PDF for formalizing a document, not for hiding information within it.
A related but different distinction: redacting removes specific content from a page you keep, while Delete PDF Pages removes an entire page from the document. If only part of a page is sensitive, redact it; if the whole page shouldn't be there, delete it instead.
A few habits reduce the chance of a mistake on a document where mistakes are hard to undo once the file is shared.
● Use text search redaction for anything that repeats throughout a document, such as a name or account number appearing on every page, rather than manually marking each instance.
● Always use the real-time preview before converting. Once a redaction is finalized, the underlying content is gone, so catching a missed spot beforehand matters more here than on most other PDF edits.
● If redacted excerpts are being pulled from multiple source documents, Merge PDF can combine them into a single file once each has been redacted individually.
If a heavily redacted, image-heavy PDF becomes large, Compress PDF afterward can shrink the file without affecting the redactions already applied.
● When compiling redacted pages from different sources into one document Organize PDF can reorder them into the right sequence before finalizing.
Yes, 100% free with no limitations or costs. Redact as many PDFs as you want, with the service supported by a small amount of advertising to keep access open for everyone.
Yes. The tool works across all browsers and is fully accessible on mobile phones and tablets, with touch controls for marking redactions.
Highly secure. Uploaded files are encrypted, and servers delete files a short time after processing, keeping your documents private throughout.
No. Formatting and quality are preserved, with seamless integration around anything redacted.
Yes. Batch mode lets you upload and redact multiple PDFs at once.
Upload your PDF above and mark what needs to be removed to start redacting in seconds.
● URGENT: get explicit product/legal confirmation on whether redactions are permanent or reversible before this page publishes in any form; the live page currently contradicts itself on this point (see urgent bug flag).
● Confirm the shared "...or drop images here" upload component is fixed site-wide; this is now the eighth page flagging the same issue.
● Feed this page into the ad-messaging standardization decision (explicit mention here, fifth of eight pages).
● Note this page's file-retention wording as further supporting evidence for the Extract PDF Pages contradiction fix.
● Confirm target URL matches the live slug exactly: https://pdf24.ai/redact-pdf (no /en/ prefix).
● Verify all internal links resolve: /protect-pdf, /sign-pdf, /delete-pdf-pages, /merge-pdf, /compress-pdf, /organize-pdf.
● Confirm the General Questions About PDF24 block is removed from this page and replaced with a single link to /documentation.
● Confirm FAQPage structured data reflects only the five tool-specific FAQ entries, not the removed general block, and that the corrected mobile-editing answer is used, not the live contradictory one.
● Verify the Rewritten Page Copy section (body copy only) is 1,300+ words: isolate that section to plain text and run wc -w on it directly, separate from the full-document count.
● Proofread for em dashes (should be none) and confirm tone matches approved style (no fluff, no AI-sounding phrasing).