Private browser tool

Image Compressor

Compress JPG, PNG, and WebP images locally in your browser. Adjust quality, compare file size, and download without uploading your image.

Always Free
Local processing
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Drag & drop your image here

Supports JPG and PNG • Up to 50MB

Supports JPG, PNG, and WebP • Up to 50MB and 40 megapixels

Tab Preview Simulation
Favicon preview My Website ×
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Original: {{ formatBytes(originalFile.size) }}
Optimized: {{ formatBytes(outputBlob.size) }}-
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Dimensions: {{ outputDimensions }}
The uploaded file format is already matching the requested conversion format. Compression will still apply.
WebP compression preserves alpha transparency channel presets. Converting transparent PNGs to JPEGs will discard transparency backgrounds.
Compression Quality {{ quality }}%
Output Format
Width (px)
Height (px)
Platform Size Presets
Crop & Fit Mode
Padding Fill Color:
Crop Positioning Align
Resize Scale {{ resizePercent }}%
Select Crop Aspect Preset
Crop Frame Size Scale {{ cropScale }}%
Circle Crop Size Scale {{ cropScale }}%
Rotate Angle
Flip Asset Mirror
Flip Asset Mirror
Watermark Text
Font Size (px)
Font Color
Opacity ({{ Math.round(watermarkOpacity*100) }}%)
Position
Click anywhere on the image above to select pixel color
{{ pickedColor }}
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Download Favicon Outputs
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Paste Base64 Encoded Image Code (e.g. data:image/png;base64,...)
Target Output Format
Images workflow

How to use Image Compressor

Compress JPG, PNG, and WebP images locally in your browser. Adjust quality, compare file size, and download without uploading your image.

Processed locallyZero file uploads to Beginware
  1. Choose an image

    Add a JPG, PNG, or WebP file and wait for the local preview to appear.

    Step 1 of 3
  2. Adjust compression

    Change the available quality setting and compare the estimated output with the original before saving.

    Step 2 of 3
  3. Download and inspect

    Open the downloaded result at its intended display size and check fine text, gradients, edges, and transparency.

    Step 3 of 3
No account required Works instantly in browser Always review important output
Accepted input
JPG, PNG, and WebP
Best use
Smaller web and sharing files
Processing
On-device re-encoding
Worked Example

Example: reduce a photo for a web page

Input Sample
A high-quality JPG exported directly from a camera or design application
Generated Result
Lower quality gradually until the file is small enough while faces, text, and important edges still look clean.
Important Checks

Limits and Considerations

  • The smallest file is not always the best result; excessive compression can introduce visible artifacts.
  • Already optimized images may show little additional reduction.
  • Keep the original because repeated lossy compression can progressively reduce quality.
Frequently Asked Questions

Image Compressor FAQs

What quality setting should I use?

There is no universal value. Start high, reduce it gradually, and judge the image at the size where it will be used.

Why is my file not much smaller?

The source may already be compressed, or its content and format may not respond strongly to the selected setting.

Is the original image modified?

No. The tool creates a new downloadable result and does not overwrite the source file on your device.

Guidance verified .
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