JPEG, PNG, and WebP are useful in different situations. The right choice depends on whether the image is a photo, a logo, a transparent asset, a UI screenshot, or part of an existing production workflow.
JPEG works well for photos
JPEG is a good fit for photos and images with many colors or smooth gradients. It can make those images much smaller, but heavy compression may create block artifacts, soft edges, or visible banding. It is often less suitable for logos, small text, and crisp UI screenshots.
PNG is useful for transparency and sharp edges
PNG handles transparency well and is useful for logos, icons, diagrams, and images with clear color boundaries. It is usually less efficient for photographic images because the file size can grow quickly.
WebP is a web delivery option
WebP can work for both photos and transparent images, and it can often be smaller than comparable JPEG or PNG files. Before replacing existing assets, check the surrounding workflow, CMS support, and any external services that consume the files.
A practical starting point
- Photos and background images: JPEG or WebP
- Transparent logos and icons: PNG or WebP
- Screenshots and UI images: PNG, or WebP after checking quality
- Existing website assets: keep the original format first
- New optimized delivery workflows: consider WebP
Compare quality and file size together
Choosing an image format based only on file size can lead to poor results. Text may become harder to read, transparent edges may look wrong, or product photos may lose important detail. Always compare the final file size with the visual result.
The TOOLPOOL Batch Image Compressor keeps JPEG, PNG, and WebP files in their original format. It is designed for cases where you want to make existing assets lighter without changing extensions or references.