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Image Compressor

Compress images client-side without uploading

1 (Smallest)100 (Best quality)

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About This Calculator

Image compression reduces file sizes to improve web page load times without perceptible quality loss. This tool compresses a single JPEG, PNG, or WebP image directly in your browser using the canvas API — your image never leaves your device. You can adjust the quality level with a slider and see the resulting file size before downloading the compressed version. PNG images retain their transparency during compression. Unoptimized images are consistently the largest contributor to slow page loads, so compressing a hero image from 2MB to 200KB can make a noticeable difference in load speed. The tool is straightforward: upload one image, adjust quality, and download the result.

How to Use

  1. 1
    Upload an image
    Select a JPEG, PNG, or WebP image you want to compress.
  2. 2
    Adjust quality
    Use the quality slider to balance file size and image quality.
  3. 3
    Download the result
    Download your compressed image file.

Frequently Asked Questions

Q. What image formats does this tool support?
This tool supports JPEG, PNG, and WebP images. PNG images retain transparency when compressed. Upload one image at a time, adjust the quality slider, and download the compressed result.
Q. How much can I compress images without visible quality loss?
JPEG images can typically be compressed to 70-80% quality with minimal visible difference. WebP achieves similar visual quality at 75-85% quality settings. The optimal level depends on the image content — photos tolerate more compression than graphics with sharp text or edges.
Q. Does compression happen on my device or a server?
All compression happens entirely in your browser using the canvas API. Your images are never uploaded to any server, so your files remain private. This also means the tool works offline once the page has loaded.

Disclaimer: Results are for informational purposes only and do not constitute professional advice. Always consult qualified professionals for important decisions.

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