Guide
JPG vs PNG vs WebP: which image format should you use?
Use JPG for broadly compatible photos, PNG for sharp graphics or lossless transparency, and WebP for efficient modern web delivery. The destination's accepted formats matter more than theoretical efficiency.
Convert Format
The short answer
| Format | Choose it for | Avoid it when |
|---|---|---|
| JPG | Photos, email attachments and strict upload forms | You need transparency or repeated lossless editing |
| PNG | Logos, screenshots, diagrams and transparent graphics | A large photographic file must be very small |
| WebP | Efficient images on modern websites | A legacy system accepts only JPG or PNG |
JPG prioritizes compatibility and photo size
JPEG uses lossy compression, which is effective on continuous-tone photographs. It is widely accepted by browsers, office software and upload forms. Lower quality reduces file size but can create blocks and halos, especially around text or hard edges.
JPG has no alpha transparency. Converting a transparent logo to JPG requires filling the transparent area with a solid background, often white.
PNG preserves exact edges and transparency
PNG is lossless and works well for screenshots, interface graphics, diagrams and images with transparent areas. Re-saving it does not introduce JPEG artifacts, but detailed photos can be much larger than equivalent JPG or WebP files.
A PNG logo is not automatically better for every website. If the graphic has many colors or photographic texture, a carefully chosen WebP may deliver the same visible quality with less data.
WebP is efficient for modern web delivery
WebP supports both lossy and lossless compression as well as transparency. Current major browsers support it, making it a practical choice for website assets where transfer size and page speed matter.
Compatibility can still fail outside the browser: old document software, government forms or vendor portals may list only JPG and PNG. Always follow the receiving system's accepted-format rule.
Convert only when the destination requires it
- Identify whether the image is a photo, a sharp graphic or a transparent asset.
- Check which formats the destination explicitly accepts.
- Keep the editable or original file before conversion.
- Convert once to the delivery format and inspect text, transparency and color.
- Compress or resize only after selecting the final format.
Repeated JPG-to-JPG conversion adds new lossy compression each time. Return to the original whenever you need a new output size or quality.
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Convert between JPG, PNG and WebP