# Check and remove hidden text from PDF

> Find and remove hidden text, white-on-white layers, and text under black boxes. Free local privacy score — no upload.

Canonical: https://mypdf.space/remove-hidden-text-pdf
Last updated: 23 Oct 2026

## Answer

Hidden text (white ink, tiny fonts, off-page text) and fake “black box” redactions can still be searched and copied. Use the privacy checker below for a 0–100 score, then fix with Redact / Deep Clean. Everything runs in your browser.

## Privacy

The checker and fix tools run locally. Files never leave your device. A high score is guidance — always proofread before sharing.

## Who needs this

- People who blacked out text in a viewer and need real redaction
- Anyone sharing scanned forms that may still have a text layer
- Legal / HR reviewers checking exports before email

## Limits

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

## How to

1. Drop your PDF into the privacy checker above.
2. Read the score and any hidden-text or covered-text findings.
3. Open Redact or Auto-redact to permanently remove sensitive regions.
4. Run Deep Clean to strip metadata and common residue.
5. Re-check until the report looks clean, then download your fixed file.

## FAQ

### What counts as hidden text?

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

### Is a black box enough to redact?

No. Drawing a box often leaves the text underneath. Use Redact so pages are rebuilt and the text is destroyed.

### Does this upload my PDF?

No. Checking and fixing stay in your browser.

### How do I verify removal?

Re-run the privacy checker, try Find in a PDF reader, and visually review every page.

## Related

- [Auto-redact PII](https://mypdf.space/auto-redact-pii)
- [Deep Clean](https://mypdf.space/deep-clean-pdf)
- [Hidden Content Auditor](https://mypdf.space/pdf-audit)
- [Safe to email PDF?](https://mypdf.space/safe-to-email-pdf)
- [Redact PDF](https://mypdf.space/redact-pdf)