Free Image Sharpener
Sharpen blurry images online using unsharp masking. Before/after comparison view. Free, fast, and works entirely in your browser with no sign-up required.
Image Sharpener
Sharpen blurry images online using convolution-based unsharp masking. Compare before and after.
Sharpening Settings
Upload Image
Click or drag image here
JPG, PNG, WebP, GIF, BMP
Privacy First: All processing happens locally in your browser. Your images are never uploaded to any server.
Frequently Asked Questions
What is the Image Sharpener?
The Image Sharpener is a free online tool that sharpen blurry images online using unsharp masking. before/after comparison view. It runs entirely in your browser with no installation or sign-up needed.
How does sharpening work?
An unsharp mask (convolution kernel) enhances edges and fine detail in the image.
Can I compare before and after?
Yes — use the split-view comparison to see the effect.
Is it free?
Yes, completely free.
Is my data safe with this tool?
Absolutely. The Image Sharpener processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the Image Sharpener work on mobile devices?
Yes, the Image Sharpener is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the Image Sharpener in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
What image formats are supported?
The Image Sharpener supports common image formats including PNG, JPG/JPEG, WebP, and GIF. Some features may also support SVG and BMP depending on the specific tool.
How do I use the Image Sharpener?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The Image Sharpener works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free Image Sharpener
Free Image Sharpener is a free, browser-based tool in our Image Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.