JPG vs PNG vs WebP: Which Image Format Should You Use?
Compare lossy and lossless compression, transparency and practical use cases for photographs, screenshots and web images.
What is the problem?
Choosing an image format by filename alone misses important tradeoffs. The content of the image, need for transparency and requirements of the destination should drive the decision.
Step-by-step solution
Compare JPG for ordinary photographs
JPEG uses lossy compression and often suits photographic content. Fine lettering or sharp lines can look degraded, so inspect exported screenshots before accepting the result.
Consider PNG for crisp edges and transparency
PNG supports lossless compression and alpha transparency. It can suit logos, interface screenshots and graphics but may produce larger files for continuous-tone photographs.
Check WebP support and output modes
WebP supports both lossy and lossless encoding and transparency. It can be an effective web format, but a recipient that accepts only JPG or PNG requires one of those formats.
Verify the final exported file
Open the output on the destination device and check dimensions, edge clarity, legibility, transparency and file size. Keep the source for comparison.
Alternative method
Follow any mandatory upload format set by the recipient, even if another format has attractive features. Simply renaming a file extension does not change the image encoding.
Known limitations
Image content and encoder settings affect size and quality. No single format can be guaranteed to be the smallest or clearest for every image.
Frequently asked questions
No. JPEG does not include an alpha channel. Consider PNG or a WebP export with transparency when the recipient supports it.
Official primary sources
This article uses the official references below; consult them for the full guidance.
