How to use Blur Image
- Choose or enter a supported source.
- Review controls and format limitations.
- Download the locally generated result.
Blur Image
Blur an entire photo or one selected rectangle locally, with a clear secure-redaction warning.
Blur an entire photo or one selected rectangle locally, with a clear secure-redaction warning. Processing stays on your device and the original remains unchanged.
How OpenFileTools processes it
Local processing, explicit choices.
The source is validated and processed in this browser tab. Large format codecs are loaded only on the relevant page; no image bytes are uploaded.
Quick technical summary
What this tool changes.
| Property | Behavior |
|---|---|
| Processing | Browser only; no image upload |
| Original | Never changed |
| Area | Entire image or selected rectangle |
| Geometry | No zoom, resize, or shift |
Blur without changing source geometry
Blur the whole canvas or one clamped rectangle. Sampling can extend around the selected area for cleaner edges, but only the selected rectangle is written back and no content is resized or shifted.
- Canvas dimensions remain unchanged.
- Blur is visual obscuring, not secure redaction.
Questions, answered.
Is blur secure redaction?
No.