Sharpen Image
Free sharpen image tool — boost edge detail and clarity on soft or slightly blurry photos using an unsharp mask, with a live preview and no signup.
About the Sharpen Image
This free sharpen image tool increases local contrast around edges to make soft or slightly out-of-focus photos look crisper. It uses an unsharp-mask technique, the same approach found in professional editors, so text, eyes and fine textures stand out more without harsh artefacts.
Adjust the sharpening amount with a live preview and stop when the detail looks natural. All processing runs on a canvas in your browser, so your image is never uploaded and the sharpened result downloads instantly.
How to Use the Sharpen Image
- 1Upload the photo you want to sharpen, or drag it in.
- 2Drag the sharpening amount slider and watch the live preview.
- 3Stop when edges look crisp but still natural, avoiding halos.
- 4Download the sharpened image, or reset to try a different setting.
Frequently Asked Questions
Can sharpening fix a very blurry photo?
Sharpening enhances existing edge detail, so it works best on images that are only slightly soft. It cannot fully recover heavy motion blur or badly out-of-focus shots, since that detail was never captured.
What is an unsharp mask?
An unsharp mask compares each pixel with a blurred copy of the image and increases the contrast where they differ. This exaggerates edges, giving the impression of extra sharpness.
How much sharpening should I apply?
Add just enough to make edges crisp. Too much creates bright halos around outlines and amplifies noise, so watch the preview and back off if the effect starts to look unnatural.
Are my photos uploaded?
No. Sharpening is performed locally in your browser, so your image never leaves your device.