How it works

The tool keeps document processing local to your browser and treats verification as part of the export, not an afterthought.

Step 1

Load

PDF.js opens the PDF in your browser and renders each page to a canvas.

Step 2

You can draw boxes manually, search for exact text, or auto-detect common sensitive patterns.

Step 3

MuPDF applies true redactions that remove intersecting text instead of merely covering it.

Step 4

The redacted output is opened again and checked for leaked fragments and text left inside redacted regions.

Step 5

Only verified outputs are downloaded, with a local certificate containing timestamp, page count, region count, and output hash.