Image Compressor
Compress JPG, PNG & WebP images instantly in your browser. No server upload — 100% private.
Drop image here or click to upload
Supports JPG, PNG, WebP — max 20MB
Original Size
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Compressed Size
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Saved
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Reduction
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How Image Compression Works
This tool uses your browser's built-in Canvas API to re-encode images at your chosen quality level. JPEG and WebP compression is lossy — it discards imperceptible detail to reduce file size. At 75–85% quality, most images look identical to the human eye but are 40–70% smaller. PNG uses lossless compression, so quality settings affect the output format only.
Best Quality Settings
80–85% — ideal for web photos (great quality, small size). 60–75% — social media thumbnails. 90–95% — print or high-fidelity use. Below 50% will show visible artifacts.
Is my image uploaded to a server?
No — everything runs in your browser using the Canvas API. Your image never leaves your device.
What formats are supported?
JPG, PNG, and WebP input formats are supported. Output is always JPEG for maximum compression.
Why isn't my PNG compressing much?
PNG uses lossless compression. Converting it to JPEG output (what this tool does) yields much smaller files, especially for photos.
Is there a file size limit?
The tool handles files up to ~20MB. Very large images may take a second to process depending on your device.