Does it guarantee my file is 100% safe?

No. It is a heuristic that errs toward false negatives. It catches the most common "black box" fake redaction, but PDFs are complex — always combine it with a manual copy-paste check.

Does inspecting change my file?

No. It is read-only analysis; no new file is produced and your original is untouched.

Files never uploaded · processed in your browser

Fake-redaction detector / PDF inspector

See in one second whether text under the black bars is still copyable

Fake-redaction detector / PDF inspector runs locally and is designed for verifiable privacy work: process, export, then confirm the sensitive content is gone before sharing.

Redaction proofLOCAL

ProcessExportVerify

Processed in your browserWorks offlinePre-export self-check

Drag a file here, or click to choose

Processed locally in your browser — never uploaded

Operational notes

What this tool proves

Upload a PDF and this tool renders every page, samples the pixels, and flags any "fake redaction" — areas that look covered by a black box but whose underlying text is still copyable. It also lists identity-leaking hidden metadata (author, creator, timestamps) and tells you whether the file is searchable or scanned. The whole check runs locally; nothing is uploaded. Run it before sharing any "redacted" file.

How to use Fake-redaction detector / PDF inspector

1Pick the PDF to inspect — analyzed locally, never uploaded
2Wait a few seconds for the per-page render and sampling
3Read the report: fake-redaction pages, leaking metadata, searchability
4If fake redaction is found, jump straight to the true PDF redaction tool

Why this tool

Almost no competitor offers a verifiable "did the redaction actually work" check. We use post-render pixel sampling (far more robust than parsing operator geometry) to catch copyable text under black bars — turning the verifiability nobody else bothers with into your last line of defense.

FAQ

Does it guarantee my file is 100% safe?: No. It is a heuristic that errs toward false negatives. It catches the most common "black box" fake redaction, but PDFs are complex — always combine it with a manual copy-paste check.
Does inspecting change my file?: No. It is read-only analysis; no new file is produced and your original is untouched.

Related tools

PDF redaction (true delete)

Draw black bars that actually remove the underlying text — not just cover it

PDF metadata removal

Wipe author, creator app, and create/modify timestamps that expose who you are

State privacy rights

Deletion laws near this workflow

These source-checked rows connect local redaction and PII cleanup to state privacy deletion rights. The cluster is staged noindex until final legal review.

2026-01-01 · KY

Kentucky

KCDPA takes effect

Updated 2026-06-10 · PrivScrub

Sources, review and limits

Last verified

2026-06-17

Author

RedactCat editorial desk

Reviewer

Privacy workflow review

Primary sources

Local PDF/image parsing and canvas rendering APIs
User-marked redaction regions and export settings
OCR helpers where the page explicitly offers OCR

Redaction is high risk. Always inspect the exported file for hidden text, metadata, layers and missed sensitive information before sharing.