blur image guides

Blurring is a family of effects, not one slider. Gaussian blur averages neighbouring pixels and looks natural on backgrounds and faces; pixelation replaces blocks of pixels with a single value and is harder to reverse; noise scrambles fine detail; and a solid block removes the information entirely. Choosing between them depends on what is being hidden and who might try to read it back. For a 1080p screenshot, 12–14 px body text usually needs an 8–12 px radius or a 10–14 px mosaic block to defeat casual reading and OCR, while large headings need roughly twice that. Faces and plates need margin beyond the visible boundary so hair, jaw edges and the plate frame do not survive a re-encode. The guides in this hub cover selection modes (brush, rectangle, lasso), strength values, edge margins, and the export step that quietly undoes good work: saving as a low-quality JPEG or applying a sharpen filter afterwards can restore some of the edges you just removed. If the concealed value is legally or financially sensitive, use a solid redaction block and export as PNG instead.

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