Is Image Sharpen free?

Yes, Sharpen Imagecompletely free to use，no signup required，no watermark, no limits。

Are my images uploaded to a server?

No. Every image is processed locally in your browser and is never uploaded to any server, which protects your privacy.

Which image formats are supported?

JPG, PNG, WebP, GIF and BMP are supported. Some tools also support PDF and SVG.

Sharpen Image

Enhance image clarity and fix blurry photos; supports USM sharpening and strength adjustment

🔍

Upload a blurry image to sharpen

Supported Formats: JPG/PNG/WebP

🔒 Processed locally, never uploaded

Select Images

🎯 Sharpen presets

Light

Standard

Strong

⚙️ Parameters

Sharpen strength: 60%

Radius: 1px

Threshold: 0

Brightness: 100%

Contrast: 100%

Hold to compare original

💡 Sharpening boosts edge contrast to make blurry images clearer. Over-sharpening causes noise and halos, so use it in moderation.

Instructions

Steps

Upload the blurry image to sharpen
Choose a sharpening preset (light/standard/strong) or adjust parameters manually
Check "Hold to compare original" to compare before and after sharpening
When satisfied, click Download Image to save

Parameters

Sharpen strength: Controls sharpening strength; higher values emphasize edges but too high causes noise
Radius: Edge range for sharpening; 1px suits slight blur, 2-3px suit blurrier images
Threshold: Only edges whose contrast exceeds the threshold are sharpened, avoiding amplified noise
Brightness/Contrast: Auxiliary adjustment for a better sharpening result

FAQ

Q: Can sharpening make a completely blurry image clear?
A: No. Sharpening only boosts edge contrast to make slightly blurry images look clearer. If an image is completely out of focus or severely blurry, sharpening has limited effect and cannot recover lost detail.

Q: Why does the image have noise after sharpening?
A: Sharpening also amplifies noise. Raise the "threshold" to sharpen only high-contrast edges and avoid amplifying noise, or lower the sharpening strength.

Q: Are images uploaded to a server?
A: No. All processing happens locally and image data is never sent to any server.

About the Sharpen Tool

Free online sharpening tool that smartly enhances clarity and edge detail, fixes blurry photos for a crisper look, with adjustable strength and live comparison; for old-photo restoration, blurry-photo enhancement and sharpening text images.

How to Use

Upload the image to process
Adjust the parameters
Click the process button
Download the processed image

PixlReady offers free online image tools. No software installation needed, works directly in your browser, supports many formats and protects your privacy.