Sharpen Image
Make soft or slightly blurry photos crisper with an adjustable unsharp-mask filter.
Add images
PNG, JPG, WebP, HEIC, SVG — anything your browser can decode.
Choose an output
Make soft or slightly blurry photos crisper with an adjustable unsharp-mask filter.
Fine-tune
Optional — sensible defaults are already set.
About Sharpen Image
Make soft or slightly out-of-focus photos look crisper using an unsharp mask, the same technique photo editors and print labs use. You control the amount, the radius of the edges it affects, and a threshold that keeps smooth areas like skin and sky from getting noisy.
When it helps
- Crisping up photos that came out a little soft from a phone camera.
- Restoring some edge definition after shrinking or upscaling an image.
- Adding bite to product photos and text screenshots before publishing.
Tips
- Start with a radius of 1-2 px and adjust the amount. Large radii create obvious halos around edges.
- Raise the threshold if noise or skin texture becomes grainy. It tells the filter to ignore small tonal differences.
- Sharpening can't fix real motion blur or badly missed focus. It only enhances edges that are already there.
Good to know
Quick answers about sharpen image in your browser.
It helps with slight softness, but it can't recover detail lost to heavy blur or camera shake. Too much sharpening just adds halos and noise.
It sets how different neighboring pixels must be before they're sharpened. A higher threshold leaves smooth areas alone and only sharpens clear edges.
Yes. There is no sign-up, no watermark and no limit on how many files you process.
No. Files are read and processed locally in your browser, so they never leave your device.
Related tools
Part of the Image Effects collection.