Compress Image to 300 KB

Compress JPG, PNG, or WebP images to under 300 KB in seconds. The compressor is pre-configured to target this size — drop your image, and it iteratively reduces quality until the file fits under 300 KB. Everything runs in your browser; your image is never uploaded.

Upload Images

Drag & drop your images or click to browse

Supports JPG, PNG, SVG, GIF • Max 10MB per file

Compress Image to 300 KB

Most images can be compressed to 300 KB with little or no visible quality loss, especially photographs.
Targets in the 100–500 KB range are a good balance — small enough for fast loading, large enough to keep photos sharp.
Use this when an upload form has a hard limit, when sharing via email, or to speed up page loads.

How it works

1
Drop your image(s)
JPG, PNG, or WebP up to 10 MB each. Multiple files at once are supported.
2
Compression target is preset to 300 KB
The maximum file size is already configured to 300 KB. You can adjust it in the controls if needed, but the default is set up for the 300kb target.
3
Compress and download
Click Compress. Single files download immediately; batches come as a ZIP.

Frequently asked questions

Will compressing to 300 KB make my image look bad?

Usually no. Most photos compress to 300 KB with no visible difference at typical viewing sizes. Highly detailed images or images with smooth gradients (skies, skin) may show slight banding.

What if my image is already smaller than 300 KB?

The compressor leaves it alone. No quality loss, no re-encoding — the file stays as it is.

Why does compression sometimes make a PNG larger than the original?

PNGs of photos compress poorly. If your source is a photo saved as PNG, convert it to JPG or WebP first using our format converter — you'll get a much smaller file at the same visual quality.