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Blur Face & Censorship
Blur Face & Censorship hides parts of a picture with a blur, a pixelation grid or a solid black box. You place the regions with precision, which is what you need for redacting documents, faces and confidential details before sharing an image.
How to use Blur Face & Censorship
- Upload the picture you need to censor.
- Select the blur, pixelate or blackout tool and draw over the sensitive areas.
- Apply the effect and download the redacted image.
Where Blur Face & Censorship is useful
- Blurring faces or number plates before posting a photo publicly.
- Blacking out account numbers in a screenshot of a statement.
- Pixelating an address or signature in a document scan.
Formats, algorithms and limits
Each method is applied to the pixels underneath, so the censored area is genuinely altered in the exported file. Blur is a convolution of neighbouring pixels, pixelation averages blocks, and blackout replaces the region with a solid colour.
Troubleshooting and honest limits
- Prefer blackout for anything truly sensitive: blur can sometimes be inverted by determined analysis.
- Draw the region slightly larger than the detail you are hiding so no edge remains visible.
- Check the exported image at 100% zoom to confirm nothing sensitive survives at the borders.
Frequently asked questions
Is blur strong enough to hide information?
Heavy blur and pixelation raise the effort needed to reconstruct details but do not make it impossible. Use the blackout mode when the information must be unrecoverable.
Can I censor several areas in one pass?
Yes. Draw as many regions as you need before applying and exporting the image.
Does censoring change the file format?
No, the output keeps the source format. Note that JPEG compresses the blurred edges slightly, which is harmless for redaction.
Is the original image modified?
No. Only the exported copy contains the censor marks; your source file is untouched.
Related tools
Page written and reviewed by the FreeConvertio engineering team on 2026-10-14. Blur Face & Censorship runs entirely in your browser — no uploads, no account and no daily limits.