Image Compressor
Compress JPEG, PNG, and WebP images directly in your browser. Adjust quality to balance file size and visual fidelity — no upload to any server.
Frequently asked questions
How does browser-based image compression work?
The tool decodes your image into a bitmap using the Canvas API, then re-encodes it at the quality level you choose. Lower quality means more aggressive lossy compression and a smaller file. Everything runs locally in your browser — the image never leaves your device.
Will compressing an image reduce its quality?
At 70-90% quality most viewers cannot tell the difference from the original, yet the file can be 50-80% smaller. Below 50% you may notice artifacts around edges and gradients. Use the before/after size comparison to find the sweet spot for your use case.
Which image formats are supported?
You can compress JPEG, PNG, and WebP files. JPEG and WebP benefit the most because they support lossy compression. PNG files are re-encoded but savings depend on image content since PNG is a lossless format.
Is there a file-size limit?
There is no hard limit, but very large images (above 50 MP) may be slow because all processing happens in your browser's memory. For best results, keep source images under 20 MB.
