Redact PDF
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FileKit — Free browser-based file tools. No upload, no signup.
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Max 500.0 MB per file·Supports: PDF
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How PDF redaction works
FileKit renders each page with pdf.js so you can draw redaction rectangles directly on the canvas. When applied, pdf-lib draws solid black filled rectangles over those exact coordinates, permanently obscuring the content. All processing is local — your document never leaves the browser.
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FileKit processes every file directly in your browser using JavaScript and WebAssembly. Your documents, images, and data never leave your device — there is no server upload, no cloud storage, and no account required. What happens in your browser stays in your browser.
- 100% client-side processing
- No server upload — ever
- No account or signup needed
- Works offline after first load