How does it hit a specific file size?

It binary-searches the JPEG quality setting, re-encoding the image at successively narrowed quality levels until the result is at or below your target size while keeping quality as high as possible.

What if my target is too small to reach?

If even the lowest quality overshoots, the tool keeps the smallest result it can produce and tells you its size, so you can raise the target or resize the image first.

Is my image uploaded for compression?

No. The compression uses your browser's canvas toBlob, so the photo is processed locally and never leaves your device.

Compress Image to Target Size

Shrink a photo to a target file size, e.g. under 200 KB.

Compress an image to a target file size

Need a photo under a specific limit — like 200 KB for a form or upload? Enter your target size in kilobytes and this tool binary-searches the JPEG quality to fit your image under that limit while keeping it as sharp as possible.

All compression happens in your browser via the canvas API, so your image is never uploaded.