Published August 31, 2026

JPG vs PNG vs WebP: Which Image Format Should You Use?

JPG, PNG and WebP can display the same picture, but they store it differently. The best choice depends on whether the image is a photograph, needs transparency, must remain sharp around text or has to fit a strict upload limit.

JPG: practical for photographs

JPG is widely supported and can make photos much smaller by using adjustable lossy compression. It is usually the most practical format for portraits, application photos and other uploads with tight KB limits. Strong compression can blur detail, and JPG cannot preserve transparent areas.

PNG: sharp graphics and transparency

PNG uses lossless compression and supports transparent backgrounds. It works well for logos, signatures, screenshots, icons and graphics with sharp edges. A photographic PNG can be much larger than a comparable JPG, which makes it less suitable for very small upload limits.

WebP: efficient modern images

WebP supports both efficient compression and transparency. It is useful for websites and modern apps, often producing smaller files than older formats. However, some older form systems accept only JPG or PNG, so the receiving instructions should determine the final format.

Choose according to the task

• Use JPG for ordinary photos and strict KB limits.
• Use PNG for transparent logos, signatures and sharp graphics.
• Use WebP for modern web use when the destination explicitly supports it.
• Use the exact format required by an application portal even if another format would be smaller.

Convert without simply renaming

Changing image.png to image.jpg changes only the filename, not the image encoding. Open PicLiva’s Image Converter, choose the real output format and download the newly encoded file.

What happens to transparent areas?

PNG and WebP can contain transparent pixels. JPG cannot, so PicLiva fills transparent areas with white during JPG conversion. Check the result if the original logo was designed for a dark background.