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Not all redaction is equal.
Three common ways to black out a PDF, and what each one actually does to the file.
| Feature | Cover-up tools | Subscription PDF suites | Cloud redaction services | RedactFirst |
|---|---|---|---|---|
| Removes the text under a box | Often not | Yes | Yes | Yes, page rebuilt as image |
| Re-opens and checks the saved copy | No | Rarely | Varies | Six independent checks |
| Holds back a copy that fails | No | No | Varies | Always |
| Report per file (PDF + JSON) | No | Varies | Varies | Yes, with SHA-256 |
| Removes metadata, scripts, history | No | Optional step | Varies | Always |
| Documents leave your computer | No | Depends on settings | Yes, uploaded | Never |
| Works offline | Yes | Mostly | No | Yes |
| Batch folders and watch folder | Rarely | Varies | Varies | Yes |
| Pricing | Free or cheap | Monthly subscription | Per page or per seat | One-time license |
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General categories, not specific products. Features differ between products and change over time; check the tool you use.
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