How much smaller will my JPEGs get?

It depends on the photo and the quality you choose. Each row shows the before and after size, plus the percentage saved.

Will it lose quality?

JPEG is lossy, so lower quality means smaller files. Start at 80% for a near-identical result, then dial it down if you want more savings.

JPEG Compressor

Re-encodes JPG and JPEG in bulk. The quality slider trades size for sharpness, and you decide where the line sits.

What this does

Re-encodes JPG and JPEG images in bulk using MozJPEG. The quality slider lets you trade file size for sharpness — dial it down for smaller files, or keep it high for a result that's indistinguishable from the original.

How it works

1Drop your JPEGs or pick them.
2Adjust the quality slider.
3Download each result, or grab them all as a zip.

Built on web standards

Built with standard browser APIs — no third-party libraries.

Frequently asked questions

Related tools

All Compress →

Video CompressorCompress a video to a smaller file in your browser. Re-encodes to H.264 at the quality level you pick.Image CompressorCompress JPG, PNG, and WebP images. Each one keeps its format. Defaults aim for the smallest file you can't tell apart from the original.PNG CompressorCompress PNG images. Color quantization cuts real size, and there's a lossless option when you need it.Compress MOVCompress a MOV (QuickTime) video to a smaller file in your browser. Re-encodes to H.264 at the quality level you pick.Compress MKVCompress an MKV (Matroska) video to a smaller file in your browser. Re-encodes to H.264 at the quality level you pick.