What Compress JPG does
Reduce a JPEG's file size with adjustable output quality. The tool keeps the operation focused and creates a separate result so the original remains available for comparison.
Compress JPG processes the supplied input in the browser unless its interface explicitly identifies a browser-managed service.
How to use Compress JPG
Set up Compress JPG around the final use case rather than an arbitrary maximum. Test the workflow on non-critical material before processing an important source.
- Select a source image and inspect its format, pixel dimensions, orientation, and transparency before making changes.
- Choose the crop, size, format, quality, color, metadata, or visual setting required by the destination.
- Use the preview at both fit-to-screen and full-size views to check edges, text, color, and artifacts.
- Download the result, reopen it independently, and confirm its pixel dimensions, format, transparency, and file size.
Where Compress JPG fits
Use this image workflow for a specific delivery requirement such as a crop, size, format, visual treatment, or metadata check. Judge the result at its actual display size as well as at 100% zoom, and retain the source image for later exports.
What to check
Open the compressed image at 100% and inspect gradients, edges, small text, and transparency. Exact target size may require both quality and dimension changes.
Check pixel dimensions, crop boundaries, transparency, small text, color, and the downloaded format at 100% zoom. Re-encoding may intentionally remove metadata and can change compression artifacts.
Privacy and limitations
Image pixels are processed in the browser and are not uploaded by these tools.
Image operations work with decoded pixels, so unsupported codecs, very large dimensions, color profiles, animation, metadata, and transparency may require special handling. Enhancement and enlargement can improve presentation but cannot recover source detail that was never captured.