About the Sharpen Image
Photos that are slightly soft from a phone camera, a resize or a scan can look much crisper with a little sharpening. This tool uses an unsharp mask, the same technique as photo editors: it increases contrast along edges without changing flat areas.
It can't recover detail from badly out-of-focus or motion-blurred photos. Too much sharpening creates bright halos, so start low.
How to use the Sharpen Image
- Add your images.
- Set the amount (60-100% for most photos) and radius.
- Download the sharpened images.
Features
- Unsharp maskEdge-aware sharpening.
- AdjustableAmount and radius.
- BatchMany photos at once.
- PrivateNo upload.
Frequently asked questions
Can it fix a very blurry photo?
No. Sharpening improves slightly soft photos; it can't invent detail that isn't there.
Is the Sharpen Image free?
Yes. The Sharpen Image is completely free with no sign-up, no watermarks, no daily limits and no premium tier.
Are my files uploaded to a server?
No. FileStripe processes your files locally in your web browser using JavaScript. Nothing is uploaded, so the Sharpen Image is safe for private photos and confidential documents and even works offline once the page has loaded.
Does it work on iPhone and Android?
Yes. The Sharpen Image works in Safari, Chrome, Firefox, Edge and Samsung Internet on phones, tablets and computers. On a phone you can pick files from your photo library or files app and share the result straight to another app.
Last updated · Processing happens locally in your browser.