Image Compressor
Reduce image file size without losing quality. Supports JPEG, PNG, and WebP. Everything runs in your browser — no uploads.
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Free Online Image Compressor
Reduce image file size while maintaining visual quality. This tool compresses JPEG, PNG, and WebP images directly in your browser using the HTML5 Canvas API — your images are never uploaded to any server, ensuring complete privacy. Adjust the quality slider to find the perfect balance between file size and image quality.
How It Works
The compressor loads your image into a canvas element, then re-exports it at your chosen quality level. For JPEG and WebP formats, the quality parameter controls compression aggressiveness — lower values produce smaller files with more compression artifacts. For PNG, the canvas re-export can still reduce file size by stripping metadata and optimizing the pixel data.
Recommended Quality Settings
For photos and social media: 70-80% quality typically reduces file size by 40-60% with imperceptible quality loss. For web thumbnails: 50-60% offers dramatic size reduction suitable for small display sizes. For print-quality images: 85-95% preserves maximum detail. For icons and logos: use PNG format which preserves sharp edges and transparency.
Frequently Asked Questions
No. All compression happens entirely in your browser using the Canvas API. Your images never leave your device. When you close the page, everything is gone — we store nothing.
WebP typically produces the smallest files at equivalent quality — often 25-35% smaller than JPEG. JPEG is best for photographs. PNG is best for graphics with sharp edges, text, or transparency. Use the output format dropdown to convert between formats.
There's no hard limit from this tool, but very large images (50MP+) may be slow to process depending on your device. Most browsers handle images up to about 16,384×16,384 pixels reliably.