Sharpen an image online

Use this free online image sharpener to sharpen a blurry or soft photo and make it look crisp again, right in your browser. Drag the adjustable strength slider and watch a live preview update instantly as edges and fine detail become clearer, then download the sharpened image. This photo sharpener supports JPG, PNG and WebP files and keeps your original format where possible. Because everything runs 100% in your browser, your image is processed locally and is never uploaded to any server. It is a fast, private way to enhance details and unblur slightly soft shots with no sign-up and no watermark.

🔒 100% private — files never leave your device

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How to use

  1. Select or drop a JPG, PNG or WebP image into the tool.
  2. Drag the strength slider until the detail and edges look right in the live preview.
  3. Compare the sharpened result against the original in the preview.
  4. Download the sharpened image to your device.

Frequently asked questions

What image formats are supported?

You can sharpen JPG, PNG and WebP images. The output keeps the original format where possible — PNG stays PNG, while other inputs are saved as JPG.

Is my photo uploaded to a server?

No. Sharpening happens entirely in your browser using a canvas, so your image is processed locally and never leaves your device.

Can it fix a very blurry photo or fully unblur an image?

Sharpening boosts existing detail and edges, so it works best on slightly soft images. It cannot recover detail that was never captured in a heavily blurred or out-of-focus shot.

How does image sharpening work?

A 3×3 sharpen kernel is applied to every pixel, increasing the contrast between neighbouring pixels so edges and fine detail stand out more. The strength slider blends this effect from none to strong.

Is there a file size or resolution limit?

There is no fixed limit — processing runs on your own device, so very large, high-resolution images may take longer or depend on your device's available memory.

Will sharpening reduce the quality of my image?

Sharpening keeps your original resolution. Pushing the strength too high can create halos or noise around edges, so use the live preview to pick a natural-looking amount.

About this tool

Free online image sharpener to sharpen a blurry or soft photo with an adjustable strength slider and live preview. Runs 100% in your browser — no uploads.

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