Free PDF Redaction Safety Checker
Check whether text you tried to redact from a PDF is still recoverable — extractable text, metadata, annotations, and prior revisions — privately in your browser.
Add a PDF to begin
Choose one PDF or drag and drop it here.
Maximum 200 MB · Up to 500 pagesPages
Search for text you tried to redact
Processed entirely in your browser. Your PDF is never uploaded, and this tool never modifies your file.
How to check a redacted PDF
- Add the PDF you redacted.
- Type the exact word or phrase you tried to remove and search it.
- Review the metadata, annotation, and revision-history findings below the search result.
- Treat any finding here as something to fix in your original editor before sharing the file — this tool never modifies your PDF.
Why a black box often isn't real redaction
Drawing a black rectangle over text — as a page annotation or as page content — only changes how the page is drawn. The underlying text objects are usually untouched and remain fully selectable, searchable, and extractable with ordinary tools. This checker searches the PDF's actual extracted text layer, the same way a reader or a script would, not just how the page looks.
What this tool can and can't check
It searches extracted text for a phrase you provide, flags redaction-style annotations, reports populated document metadata, and detects whether a file was saved incrementally more than once (a sign an earlier, potentially unredacted revision may still be recoverable from the raw file). It does not detect a black box drawn directly into page content without an annotation, does not extract the content of an earlier revision itself, and cannot check text baked into a scanned image. No automated checker can guarantee a PDF has zero remaining leaks.
Common use cases
- Confirm sensitive text is actually gone before sharing a redacted PDF
- Check whether document metadata still reveals an author or organization
- Spot a black box that only covers text visually instead of removing it
Frequently asked questions
Is my PDF uploaded?
No. Everything is read and analyzed locally in your browser.
Does this tool fix or redact my PDF?
No. This is a read-only checker. It never modifies your file — use it to verify a redaction before sharing, then fix any issue in your original editor.
Why did my metadata still show my name?
A document's Title, Author, Subject, Keywords, Creator, and Producer fields are separate from the visible page content and are commonly left untouched by visual redaction. This tool reports any of these fields that are populated.
What does an incremental-revision warning mean?
PDF files can be saved as a series of appended edits rather than a full rewrite. More than one such saved revision means an earlier version of the file — potentially from before redaction — may still be physically present in the raw file and recoverable with specialized tools.
Can this guarantee my PDF is fully safe to share?
No. It checks the specific, real failure modes described above, but no automated tool can guarantee the complete absence of every possible information leak in a document.