Image Compressor Online — Reduce Image File Size
Free online image compressor. Reduce PNG, JPG, and WEBP file sizes using the Canvas API quality settings. No upload — runs entirely in your browser.
Original
No image selected
Compressed
Compressed image will appear here
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Original
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Compressed
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Saved
💡 What is this
Image Compressor
- Reduces image file size by re-encoding with adjustable quality using the Canvas API.
- Works with JPG, WEBP (lossy), and PNG.
- Slide the quality bar to see size changes in real-time.
📖 How to use
Step by Step
- Choose an image file
- Select output format (JPG/WEBP for best compression)
- Drag the quality slider — lower = smaller file
- Compare original vs compressed size
- Download when satisfied
🎯 Use cases
When to use
- Optimizing images for web pages
- Reducing upload sizes for email
- Meeting file size limits for forms
- Batch-preparing images for blogs
Frequently Asked Questions
How much can I compress?▾
JPG at 75% quality typically reduces file size by 50-80%. WEBP can achieve even better compression. PNG compression is minimal since it's lossless.
Does compression affect image dimensions?▾
No. Compression only reduces file size by adjusting encoding quality. The pixel dimensions remain identical to the original.
Why is PNG not getting smaller?▾
PNG is a lossless format. The quality slider has no effect on PNG — use JPG or WEBP for lossy compression with smaller sizes.