Redact PDF
Permanently remove sensitive text and images from PDF.
How to Use Redact PDF
- Upload your file: Drag and drop your file into the active processing area above, or click the box to browse your device files.
- Configure settings: Select your preferred options (such as target file size in KB, compression level, page order, or output format).
- Process locally: Click the primary action button. Your file is rendered and encoded in seconds directly inside your browser memory.
- Download output: Click Download to save the modified document back to your device. No watermarks are added.
Zero-Cloud Privacy Guarantee
Unlike legacy web utilities that upload your sensitive documents to remote servers, PDFtiny executes 100% of processing inside your local browser using WebAssembly. Your files never leave your computer, ensuring complete privacy, enterprise compliance, and offline availability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Processing Engine | Client-Side WebAssembly (WASM) & HTML5 File API |
| Server Transmission | 0 Bytes Uploaded (100% Local Browser Memory) |
| Device Compatibility | Chrome, Safari, Firefox, Edge, Android, iOS, Windows, Mac, Linux |
| Compliance | ISO 32000-2:2020, GDPR Article 25 (Privacy by Design) |
Frequently Asked Questions
Is redaction permanent or can someone uncover blacked-out text?
PDFtiny permanently erases the underlying vector streams, text glyphs, and image pixels beneath the redaction box. Unlike simple black highlighter annotations in viewer apps, our redaction completely purges the hidden data from the PDF file structure.
Does redaction remove hidden metadata and document properties?
Yes, applying redactions also scrubs metadata, author names, modification histories, and hidden bookmarks associated with redacted sections.
Can I redact both text and images?
Yes, you can draw redaction rectangles over any portion of a page including text paragraphs, ID photos, signatures, and credit card numbers.
Is my confidential document secure during redaction?
100% secure. Everything happens on your own computer via client-side WebAssembly. No files or confidential details are ever transmitted across the internet.