Image Compressor
Compress images to reduce file size. All processing happens in your browser — your images never leave your device.
Drop images here or click to upload
Supports JPEG, PNG, WebP
Key Features
- Reduces image file size by up to 90% while preserving visible quality.
- Supports JPEG, PNG, WebP, and GIF formats in a single drag-and-drop interface.
- Lets you fine-tune compression level with a quality slider for full control.
- Processes multiple images at once so you can compress an entire batch in seconds.
- Runs entirely in your browser — your images never leave your device.
- Displays before-and-after file sizes so you can see exactly how much space you saved.
Frequently Asked Questions
Does compressing an image reduce its dimensions?
No. This tool only reduces file size by optimising the image data — the pixel dimensions stay exactly the same. If you also need to resize, use the Image Resizer tool.
Are my images uploaded to a server when I compress them?
Never. All compression happens locally in your browser using the Canvas API. Your files are not sent anywhere.
What is the best quality setting to use?
For photos, a quality of 75–85% usually gives an excellent visual result at a fraction of the original size. For images with text or sharp edges, stay above 85% to avoid artefacts.
Can I compress PNG files without losing transparency?
Yes. PNG compression is lossless by default, so transparency is fully preserved. Switching the output to WebP can achieve even smaller sizes while keeping the alpha channel.
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