Blur Image
Soften a photo with a blur.
How to use Blur Image
Free blur tool: apply a gaussian-style blur of any strength to a photo on the canvas and download it.
Open Blur Image on toolpermarket — the form is ready, so type your numbers and read the result.
In the Image field, open a photo to soften. Busy backgrounds blur most usefully.
In the Blur radius field, pick the strength in pixels. Small values keep the subject sharp.
Press Blur to compute the result. The output appears immediately below the form. Edit a value and press the button once more to see the updated answer.
Read the result and use it as needed. If the number looks off, re-check your inputs and run it again — the math is deterministic, so the same entries always return the same answer.
Worked example. A busy office background at four pixels of blur turns into a smooth, soft field behind a sharp subject.
Tips for accurate results.
Use blur to anonymize a background face.
Keep the subject in focus by blurring a copy.
Larger radii can hide sensitive text.
When to use Blur Image. Softening a distracting backdrop in a portrait. Obscuring license plates or documents. Adding a dreamy, shallow-focus feel.
When you actually reach for this
- You want to soften a background, hide a distraction, or add depth.
- You need to censor a region without hard pixel blocks.
Where this tool stops being accurate
- Blur is destructive; heavy blur smears detail you cannot recover, so keep the original.
- A large radius smears edges and text, so apply it gently where precision matters.
Frequently asked questions
How is the blur kept private?
The photo is drawn to a local canvas and the blur is a built-in canvas filter, so the whole operation happens. The source file is never uploaded and the softened copy is produced and saved on your device.
Why might text still be partly readable?
A small radius smooths edges but leaves large letter shapes legible, so for redaction use a larger radius or pixelate the region. Blur is best for aesthetic softening and light anonymizing rather than certified redaction.
Can I control how soft it gets?
The slider sets the radius in pixels, and the preview updates live, so you can dial in anything from a subtle haze to a heavy fog before downloading the PNG.
Can I undo a blur?
Not from the saved file; the detail is averaged away. Save the source if you might need it sharp again.