Compress JPG and WebP Images Online

JPG and JPEG are names for the same photographic image format. This tool decodes the source and uses the browser’s native JPEG encoder at your chosen quality, preserving the displayed orientation and decoded width and height.

JPEG compression is lossy, so lower quality can reduce file size by discarding more image detail. Re-encoding an already compressed JPEG cannot restore detail and may not create a smaller file.

Static WebP images are re-encoded with the browser’s native WebP encoder. The tool verifies both encoder support and the returned WebP data instead of silently downloading another format.

WebP transparency is preserved by the canvas encoding path. Animated WebP is intentionally rejected because this lightweight workflow does not preserve animation frames.

The quality slider controls the balance between visual detail and file size for both supported formats. A lower number often produces a smaller result, while a high number may keep more detail but can be larger than the source.

Compression does not resize the image. Each result keeps the exact decoded dimensions. Use Image Resizer separately when reducing pixel dimensions is appropriate for your workflow.

No quality value guarantees a smaller result. Content, source encoder settings, and existing optimization all affect the size. When re-encoding is equal to or larger than the source, the tool marks it as already optimized instead of reporting a compression success.

The re-encoded result remains available for an explicit comparison download, but the original file is recommended when it uses fewer bytes.

PNG uses lossless compression and does not have a standard browser canvas quality control comparable to JPEG or WebP. Pretending the shared quality slider compresses PNG would be misleading.

This version therefore accepts only JPG, JPEG, and static WebP. A future PNG-specific optimization workflow would need separate behavior and validation rather than a silent conversion or ineffective slider.