Image optimizer
Use Image optimizer to compare image formats, quality, and resulting sizes. Download successful copies separately or as a ZIP, then check their appearance.
| Image | Original size | New size | Change |
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Image optimizer
Image optimizer prepares image copies with a selected output format and quality setting. Choose several files, compare original and resulting sizes, and download successful results individually or in a ZIP. Use the size comparison alongside a visual check rather than choosing an output solely because its number is smaller.
How to use Image optimizer
- Select images in the supported PNG, JPG, JPEG, WebP, or AVIF input formats.
- Choose original format, JPG, WebP, AVIF, or PNG; adjust quality where that control is available.
- Run optimization, inspect individual results and size comparisons, then download useful copies or the ZIP.
A practical example
For a product gallery, test a photograph and an image containing small text before processing the rest. Check highlights, edges, and lettering at the intended display size. A setting suitable for a photograph may make a label difficult to read, so review files individually before replacing published assets.
Limitations
Not every source becomes smaller. File-processing limits and available settings still apply, and PNG output disables the quality control. Optimization does not mean resizing, restoring missing detail, or guaranteeing identical appearance. Keep source files until the downloaded results open correctly in the destination application.
Common questions
Why is quality disabled for PNG?
The page treats PNG output separately and disables that setting. Compare the resulting image and file size instead of assuming a particular reduction.
Must I download the entire batch?
No. Successful results have individual download controls, with a ZIP option for downloading them together after processing.
Related tools
For a specific format change, compare PNG to WEBP and JPG to PNG. Use Exif reader for a separate inspection of available image metadata.
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