Does compression affect image quality?

Yes. Lower quality values produce smaller files but introduce JPEG compression artefacts. A quality of 80–90 is usually a good balance between file size and visual fidelity.

What image formats can I upload?

You can upload any format your browser supports as an image source — JPEG, PNG, WebP, GIF, BMP, and more. The output is always a JPEG file.

Is my image uploaded to a server?

No. All compression happens entirely inside your browser using the HTML Canvas API. Your image never leaves your device.

Image Compressor

Compress images by adjusting JPEG quality to reduce file size without leaving your browser.

[ choose file ]

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FAQ

Does compression affect image quality?: Yes. Lower quality values produce smaller files but introduce JPEG compression artefacts. A quality of 80–90 is usually a good balance between file size and visual fidelity.
What image formats can I upload?: You can upload any format your browser supports as an image source — JPEG, PNG, WebP, GIF, BMP, and more. The output is always a JPEG file.
Is my image uploaded to a server?: No. All compression happens entirely inside your browser using the HTML Canvas API. Your image never leaves your device.

The Image Compressor lets you upload any image and reduce its file size by exporting it as a JPEG with a configurable quality level. Adjust the quality slider from 1 to 100 and instantly see the compressed file size versus the original. All processing happens locally in your browser using the Canvas API — no data is sent to a server.