# Check a PDF for hidden text

> Check a PDF for hidden text, white-on-white layers, and text under black boxes. Free privacy score in your browser — no upload.

Canonical: https://mypdf.space/check-pdf-for-hidden-text
Last updated: 2026-10-26

## Answer

Hidden text (white ink, tiny fonts, off-page text) and fake redactions leave content searchable and copyable. Use the privacy checker below for a 0–100 score covering hidden text, covered text, PII, metadata, attachments, and scripts — entirely local.

## Limits

- Best-effort detection — always proofread before sharing.
- Scanned pages without OCR will not surface text-layer PII.
- Fix tools (Redact, Deep Clean) are separate steps after the report.

## FAQ

### What counts as hidden text in a PDF?

Text that is invisible or hard to see on screen but still in the file — white-on-white, very small fonts, clipped off the page, or sitting under black boxes.

### Does this upload my PDF?

No. The checker runs in your browser tab.

### How do I remove hidden text after it is found?

Rebuild affected pages with Redact, then Deep Clean metadata/attachments, or run Confidential Send. Re-check before sharing.

## Related

- [Full privacy checker](https://mypdf.space/check-pdf-for-hidden-data)
- [Redact PDF](https://mypdf.space/redact-pdf)
- [Deep Clean](https://mypdf.space/deep-clean-pdf)
- [Confidential Send](https://mypdf.space/prepare-pdf-for-safe-sharing)