Black out sensitive information in your PDF documents. Permanently remove text, numbers, and personal data. All processing happens in your browser — your files never leave your device.
or click to browse your files
Black out sensitive information in three simple steps — no software installation or account required.
Drag and drop your PDF file into the upload area, or click "Choose PDF File" to browse your device. The tool accepts any standard PDF document. Once uploaded, all pages are rendered so you can navigate to the content you need to redact.
Click and drag to draw black rectangles over any text, numbers, names, addresses, social security numbers, financial data, or other sensitive information you want to permanently hide. Add as many redactions as needed on any page.
Click the download button to save the redacted PDF. All blacked-out areas are permanently embedded, covering the sensitive content underneath. Your original file is never modified — a new redacted copy is created.
Protect sensitive information with confidence — free, private, and permanent redaction.
No premium tier, no usage limits, and no hidden fees. Redact as many PDFs as you need without creating an account or paying a subscription.
Your files never leave your device. All redaction happens locally in your browser. This is critical for sensitive documents — your private data stays completely private throughout the entire process.
Black rectangles are permanently drawn over the sensitive content in the PDF. Once downloaded, the redacted information cannot be recovered, uncovered, or extracted from the file.
Navigate between pages and redact content on any page. Whether you need to black out a name on page one or financial data on page fifty, every page is accessible.
Click and drag to create redaction rectangles of any size. Cover a single word, a line of text, a paragraph, or an entire section. You have complete control over exactly what gets redacted.
Made a mistake? Use undo to remove a redaction before downloading. Adjust your redactions until you are satisfied that all sensitive content is properly covered.
Everything you need to know about redacting PDFs with ConvertKr.
Yes. When you download the redacted PDF, black rectangles are permanently embedded into the document content, covering the sensitive information underneath. The original text beneath the redaction cannot be recovered or extracted from the downloaded file.
Absolutely. All processing happens entirely in your browser using JavaScript. Your PDF files are never uploaded to any server. ConvertKr cannot see, access, or store your documents. This makes it safe for redacting contracts, legal filings, medical records, and financial statements.
You can redact any visible content on a PDF page — text, numbers, names, addresses, phone numbers, social security numbers, account numbers, images, signatures, dates, or any other sensitive information. Simply draw a black rectangle over the content you want to hide.
Yes. You can navigate between pages and add redactions to any page in the document. There is no limit to the number of pages or redaction rectangles you can add.
Yes. The editor supports undo and redo, so you can remove a redaction rectangle immediately after placing it. You can also select and delete individual redaction areas before downloading the final PDF.
ConvertKr's redact tool uses black rectangles (blackout) to cover sensitive content, which is the standard approach for document redaction. The black mark makes it visually clear that content has been intentionally removed, which is important for legal and compliance purposes.
Yes. The black redaction rectangles are clean and consistent, similar to what you would see in officially redacted government or legal documents. No branding or watermarks are added to your file.
Yes. Since redaction draws black rectangles over the visible content, it works on any PDF regardless of whether it contains selectable text or scanned images. The black rectangle covers whatever is visible on the page at that location.
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