Image Compressor
Compress JPG, PNG, and WebP images to a target file size, or fine-tune quality, dimensions, and format manually.
Image Compressor
Compress JPG, PNG, and WebP images to a target file size, or fine-tune quality, dimensions, and format manually.
About the image compressor
Target size or manual settings
You can add up to 20 JPG, PNG, or WebP files, each up to 20 MB. Target size mode lets you set a KB or MB limit for each image. Manual mode keeps the existing quality, maximum dimensions, output format, and per-image override controls.
Local worker processing and output limits
Compression runs in a browser Web Worker, so the original files stay on this device. Target size mode stops after a bounded number of attempts or amount of processing time and clearly reports when it cannot reach the limit. PNG files, especially those with transparency, may not shrink enough without changing format or dimensions. Metadata and color profiles are not guaranteed to be preserved.
FAQ
Common questions and answers about this topic.
Will my images be uploaded to a server?
No. All compression runs in your browser via a Web Worker, so both the original files and the compressed results stay on this device and are never sent to any server.
Will compression reduce quality, and is metadata preserved?
Target size mode may lower quality and then reduce dimensions to get closer to the limit; the result shows the final quality, dimensions, and tradeoffs. Manual mode lets you choose those settings yourself. Because output is rebuilt from decoded pixels, camera metadata such as EXIF and color profiles is not guaranteed to be preserved.
How many images can I compress at once, and which formats are supported?
You can compress up to 20 files at once, each up to 20 MB, in JPG/JPEG, PNG, or WebP. Target size mode applies a KB or MB limit to each image. Switch to manual adjustment when you want direct control over quality, dimensions, format, or per-image overrides.
Is the target file size guaranteed?
No. To keep processing responsive, the tool limits both attempts and processing time. It reports whether the target was reached and keeps the best result found. PNG files with transparency may stay above the target unless you allow smaller dimensions or change format.