Will compressing JPEG make it look worse?

Yes, below a point. JPEG is lossy. Stay near 70–85% for web photos; drop lower only when size matters more than edges.

Is this the same as TinyJPG?

No. TinyJPG uses server-side encoders. This page uses the browser’s JPEG encoder. It is private and good enough for most web use.

Free JPG Compressor — Shrink JPEG in Your Browser

Drop an image

Or click to browse. The file stays in this tab.

Choose file

What a JPG compressor actually does in the browser

JPEG is already lossy. This free JPG compressor re-encodes at the quality you pick, which is how file size drops. It does not upload the photo. A target in kilobytes is compress image to size. Transparency or screenshots are usually a job for the PNG compressor.

Free JPG compressor FAQ

Will compressing JPEG make it look worse?: Yes, below a point. JPEG is lossy. Stay near 70–85% for web photos; drop lower only when size matters more than edges.
Is this the same as TinyJPG?: No. TinyJPG uses server-side encoders. This page uses the browser’s JPEG encoder. It is private and good enough for most web use.

Related image tools

WebP converter

Often smaller than JPEG.

Image resizer

Resize by pixels, percent, or longest side. JPEG, PNG, or WebP out.

JPG to PNG

Convert a JPEG into a lossless PNG.