Open the PDF locally
Choose a PDF from your device. Blivion renders the pages in your browser so the default workflow does not require an upload.
PDF redaction tool
Redact PDFs locally, with native PDF export when it can be verified.
Blivion is a browser-based PDF redaction tool for sensitive documents. Mark visible content for true redaction, clean supported PDF metadata, and export a safer PDF with a verification report before sharing.
PDF modeNative when verifiedFallbackFlattened rebuildCertificateVerification JSON
Workflow
From PDF upload anxiety to a reviewed local export
The goal is not to draw a black box. The goal is to create an exported PDF where the sensitive content is removed or safely flattened.
Mark true redactions
Draw redaction boxes over text, IDs, faces, images, or document sections that need to be removed from the exported file.
Try native PDF redaction first
For safely mapped rectangular redactions, Blivion attempts native PDF preservation and verifies the result before offering the download.
Fallback when safety needs it
When a PDF cannot be preserved safely, Blivion rebuilds a flattened visual PDF so the reviewed page appearance is baked into the output.
Why Blivion
Built for careful PDF redaction, not cosmetic hiding
Native PDF redaction is useful only when the output can be verified. Blivion makes that tradeoff visible instead of silently preserving risky PDF structures.
Native PDF preservation when provable
Searchable structure can stay intact for supported rectangular redactions only when Blivion can verify the native export.
Metadata cleanup included
PDF exports run through the selected clean profile, checking document info plus supported hidden structures before download.
Verification evidence
The editor shows what was removed, what was verified, whether native structure was preserved, and when fallback flattening was used.
Limits
Honest PDF redaction boundaries
Blur and pixelate are visual obfuscation, not safe PDF redaction.
Complex PDFs, brush marks, unusual geometry, and unsupported internals may require the flattened visual fallback.
No tool can remove sensitive information that is still visibly present on the exported page.