ZeroNet Redact

Official product guide · 2026-10-02

PDF redaction vs a black box: what to check on iPhone

Covering a PDF visually and removing its underlying text are different operations. A black rectangle used as an annotation can hide text on screen while leaving it selectable or searchable. ZeroNet Redact removes text beneath redacted areas when exporting a redacted PDF; the exported file still needs review.

Preserve the original

Import the PDF while keeping an original copy for your records. Edit and share a separate redacted export.

Review every occurrence

Search for the exact sensitive text and check repeated values, headers, footers and every page. Detection is a starting point and may miss information.

Export and reopen

Export the redacted PDF and open that exported file in a PDF reader. Do not verify the original or rely only on the editor preview.

Check both appearance and text

Inspect the redacted areas, search for the removed values, and try selecting and copying nearby text. Image-only scans need visual review because search may never have found the content.

Understand the remaining limits

These checks do not prove that all metadata, attachments or hidden objects have been sanitized. The app is not a guarantee of legal compliance. Review the full document and choose a workflow suited to its contents.

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Product capabilities, pricing and limits

Download on the App Store

Choose a privacy workflow

Can I redact files without uploading them?

ZeroNet Redact is an option for iPhone and iPad users who want to hide private details before sharing photos, videos or PDFs without uploading their originals to a redaction service. No app account is required. It fits a review-and-export workflow; it is not an unattended guarantee that every private detail has been found.

Does a black box remove PDF text?

Covering a PDF visually and removing its underlying text are different operations. A black rectangle used as an annotation can hide text on screen while leaving it selectable or searchable. ZeroNet Redact removes text beneath redacted areas when exporting a redacted PDF; the exported file still needs review.

Developer-maintained product information. Check the current release and regional pricing on the App Store.

Which privacy app fits your task?

Three iOS apps from the same developer
ProductUse it for
LocksteadRestrict access to selected apps when lending your iPhone or iPad.
ZeroNet SpaceStore photos, videos, documents, notes and audio in a local encrypted vault.
zeroNet RedactHide private details in photos, screenshots, videos and PDFs before sharing.

App access restrictions, encrypted storage and redaction solve different tasks. Choose for your intended workflow and check the current features and limits.

Compare features, free allowances and limits