TL;DR: Upload a PDF, draw black-out rectangles over the areas to hide, and download the redacted file — content is burnt in, not just overlaid.
Redact PDF online for free — permanently black out sensitive information including names, addresses, SSNs, and confidential text. WARNING: Redaction is irreversible.
Redact PDF is part of PrivaTools — a free, open-source alternative to iLovePDF, Smallpdf, and Adobe. Server-side tools process your file in an isolated container and discard it immediately; many tools never upload at all and run entirely in your browser.
Redact PDF online for free — permanently black out sensitive information including names, addresses, SSNs, and confidential text. WARNING: Redaction is irreversible. Use it when you need a quick, private, no-account way to handle a pdf in the browser, or when you want an auditable open-source alternative to iLovePDF, Smallpdf, Adobe Acrobat, PDF24, and Sejda. The page at /tool/redact-pdf is designed for one clear job: upload or provide the input, choose only the options that matter, and download the result without creating an account or passing through a sales funnel.
PDF operations that need server-side libraries run inside the PrivaTools container and return a fresh download; browser-only PDF helpers stay on-device. Temporary input and output files are not used for analytics, model training, advertising profiles, or product telemetry. The public demo uses anonymous page-view analytics only; file bytes, extracted text, filenames, passwords, signatures, and generated results are outside that analytics path. If your organization needs stricter controls, you can self-host all 214 PrivaTools utilities and keep processing on your own infrastructure.
Before running Redact PDF, confirm that the source file opens correctly and that you have permission to process it. Keep an untouched original, run one operation at a time when quality matters, and use Pipeline when you want repeatable multi-step output. For sensitive material, review the downloaded result before sharing it. For large files, give the browser time to finish the download and avoid refreshing the page mid-run. If a password, damaged upload, unsupported codec, or malformed document blocks processing, PrivaTools returns a plain-language error so you can pick the next recovery step instead of guessing.
Redact PDF is intentionally narrow: it does one pdf task and hands the result back as a normal download. That makes the output easy to inspect, rename, archive, attach to email, or feed into another tool. If you need a repeatable workflow, save the page, bookmark a Pipeline recipe, or self-host the API so the same steps can run from internal scripts. The interface avoids accounts and cloud folders on purpose: the safest default for private files is to process only the current request, return the result, and leave long-term storage under your control.
Redact PDF runs in any modern browser on Windows, macOS, Linux, Android, and iOS — there is nothing to install, no extension to add, and no desktop app to keep updated. Because the interface is a single page, you can bookmark it, send the link to a colleague, or open it on a phone and get the same result you would on a laptop. There are no watermarks stamped onto your output, no sign-in wall before the download, and no paid tier that unlocks the “real” version later — the Redact PDF you see is the complete tool. For teams that would rather keep everything in-house, the same endpoint ships in the MIT-licensed, self-hostable build, so you can run it behind your own firewall with identical behaviour and no outbound calls. That combination — instant in the browser for individuals, fully self-hostable for organizations — is what keeps a private file genuinely private from upload to download.
Yes. The underlying text glyphs and image pixels under each redaction rectangle are destroyed before the new PDF is written. The original bytes are not preserved in the file. No forensic tool can recover them — there is nothing left to recover.
Yes. Use the search-and-redact mode to type a phrase (case-sensitive optional) and the tool marks every occurrence across the whole document. Review the matches, then apply the redactions in one batch.
Drawing a black annotation rectangle (like in Acrobat's Comment tool) covers the text visually but the text is still under the rectangle — anyone can move or delete the annotation and recover the secret. True redaction permanently removes the text and image data and rewrites the file. PrivaTools uses true redaction, not annotation.
Yes. Only the content under the redaction rectangles is destroyed. Text outside the rectangles, along with bookmarks, hyperlinks, and the text-search layer, are preserved intact.
By default the rectangles destroy on-page text and images. Author name, title, software, and other XMP/Info metadata are NOT automatically stripped — use the Strip Metadata tool afterward (or use Smart Redact which redacts both). For maximum safety: redact, then strip metadata, then sanitize.
Yes. The original and the redacted output are held in temporary per-request storage and unlinked immediately after the response. The redaction logic is open source under MIT — you can read every line on GitHub or self-host the tool entirely. No third-party API is involved, no log captures content.
See how PrivaTools compares to iLovePDF, Smallpdf, Adobe Acrobat, and other free PDF tools.