Runs locally — your images are never uploaded

Image Compressor

Upload an image and adjust the quality slider to shrink its file size before downloading.

How to use the Image Compressor

  1. Upload a JPG, PNG, or WebP image.
  2. Drag the quality slider to balance file size against visual quality — lower values mean smaller files but more visible compression.
  3. Watch the compressed file size update live as you adjust the slider.
  4. Click "Download Compressed Image" once you're happy with the result.

About the Image Compressor

Large image files slow down websites, blow past email attachment limits, and eat up storage space — often without any visible difference in quality once compressed sensibly. A photo straight off a modern phone camera can easily be 4-8 MB, when the same image compressed to 80-85% quality often looks identical to the eye at a fraction of the size.

This tool uses your browser's built-in canvas image encoder to re-compress your image at a quality level you control with a single slider, showing you a live before/after file size comparison so you can find the right balance for your specific use — a smaller size for a quick email attachment, or a higher quality setting for something meant to be printed or viewed at full resolution.

It's used constantly by anyone uploading images to a website with a size limit, photographers preparing images for web use rather than print, and people trying to fit more photos into a limited email or messaging attachment. Because compression happens directly in your browser via the canvas API, your original image is never uploaded anywhere in the process.

Frequently asked questions

Does compression permanently reduce quality?+
Yes, compression is a one-way process — always keep your original file, since re-compressing an already-compressed image will compound quality loss.
What quality setting should I use?+
80-85% is a common sweet spot for JPG/WebP photos, offering a big size reduction with minimal visible quality loss. Go lower only if file size is critical, and higher for images meant for print or close inspection.
Does this work on PNG images?+
Yes, though PNG compression benefits are typically smaller than JPG/WebP since PNG uses lossless compression by nature; converting to JPG or WebP first (via the Image Format Converter) often yields better size reductions for photos.
Is my image uploaded to a server?+
No, compression happens entirely in your browser using the HTML canvas API. Your image is never uploaded, transmitted, or stored anywhere.

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