Image Compressor

Compress JPG, PNG, and WebP images to a custom quality or target file size without quality loss.

Supported Formats: JPG, JPEG, PNG, WebP

Loading interactive Image Compressor interface...

How to Use Image Compressor

  1. Upload an image using drag & drop or the file browser.
  2. Adjust the quality slider or enter a desired target file size in KB.
  3. Review the before-and-after comparison and file size savings.
  4. Click "Download Compressed Image" to save your optimized file.

Technical Specifications & Formula

Calculated via HTML5 Canvas using iterative adaptive compression algorithms, searching for optimal quantization parameters to match target dimensions and byte sizes.

Worked Example: Reducing a 2.4 MB Camera Photo to under 200 KB

Scenario: You have a 4032x3024 smartphone photo (2.4 MB) that needs to be attached to an email or uploaded to a job portal requiring under 200 KB.

Calculation / Steps: Quality slider set to 75% with target set to 190 KB. Canvas algorithm dynamically determines quantization tables.

Result: Compressed to 186 KB (92.2% reduction) while preserving face and text clarity.

Important Guidelines & In-Browser Limitations

  • Processing is performed locally in browser memory; images larger than 50 MB may require devices with sufficient available RAM.

Frequently Asked Questions

Does compressing images compromise image resolution?

Our compressor preserves pixel dimensions by default while reducing compression artifacts and unneeded metadata. You can also resize if desired.

Are my images uploaded to any server?

No. All processing happens 100% locally in your browser using the HTML5 Canvas API. Your photos never leave your device.

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