Does compression reduce image quality?

Yes, lossy compression (JPEG/WebP) reduces quality slightly. Use the quality slider to balance size vs quality. PNG is lossless but compresses less.

What formats are supported?

Input: JPEG, PNG, WebP, GIF, BMP. Output: JPEG, PNG, WebP. Max file size: 50MB.

No. All compression happens in your browser using Canvas API. Your images never leave your device.

80% is a good default. 90%+ for high quality, 60-70% for web optimization. Lower = smaller file.

Reduce image file size in your browser. Supports JPEG, PNG, WebP, GIF, BMP. Adjust quality and dimensions.

Upload Image

Drag & drop or click to upload

JPEG, PNG, WebP, GIF, BMP · Max 50MB

Client-side only: Images never leave your browser. Uses HTML5 Canvas API.
Quality slider: 10% = maximum compression, 100% = minimal compression.
Format choice: JPEG for photos, PNG for graphics with transparency, WebP for best compression.
Resize option: Set max width/height to downscale large images.
Privacy: No uploads, no server processing, works offline after load.

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Runs in your browser — nothing is uploaded.