Is compression lossless or lossy?

JPEG compression is lossy — some quality is lost at lower settings. PNG can be compressed losslessly. The tool uses JPEG compression by default for the smallest file sizes.

Does my image get uploaded to a server?

No — all compression happens in your browser using the Canvas API. Your images never leave your device.

What formats are supported?

JPEG, PNG, and WebP for input. Output is JPEG or WebP.

How much can I reduce file size?

Typically 40–90% reduction depending on the original image and quality setting. A 5MB photo can often be reduced to under 500KB.

Image Compressor — Reduce image file size without losing quality

About Image Compressor

Compress JPEG, PNG, and WebP images directly in your browser. Reduce file size by up to 90% while maintaining visual quality. Uses Canvas API — no upload to servers.

How to Use Image Compressor

Upload or drag-and-drop your image (JPEG, PNG, or WebP).
Adjust the quality slider (0–100). Lower = smaller file, higher = better quality.
See the compressed preview and file size comparison.
Download the compressed image.

Frequently Asked Questions

Is compression lossless or lossy?: JPEG compression is lossy — some quality is lost at lower settings. PNG can be compressed losslessly. The tool uses JPEG compression by default for the smallest file sizes.
Does my image get uploaded to a server?: No — all compression happens in your browser using the Canvas API. Your images never leave your device.
What formats are supported?: JPEG, PNG, and WebP for input. Output is JPEG or WebP.
How much can I reduce file size?: Typically 40–90% reduction depending on the original image and quality setting. A 5MB photo can often be reduced to under 500KB.

Image Compressor