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

The quick decision table

For a typical photo, compare JPG and lossy WebP. For diagrams, screenshots, or logos that need exact edges or transparency, compare PNG and lossless WebP. Keep the editable source separately from the delivery copy.

• JPG: lossy, no transparency, strong compatibility, efficient for photographs.
• PNG: lossless pixel storage, alpha transparency, efficient for flat graphics and repeated colors.
• WebP: lossy or lossless, alpha transparency, animation, and broad modern browser support.

Photographs and gradients

Photographs contain continuous tone and noise that lossless PNG must describe exactly. JPG and lossy WebP can discard subtle information to reduce size substantially.

At aggressive settings, both lossy formats can soften texture, create ringing around edges, or produce block artifacts. Export from the original and inspect faces, foliage, and text overlays carefully.

Transparency, logos, and interface graphics

JPG cannot represent transparency, so transparent pixels must be blended onto a solid color. PNG and WebP can preserve an alpha channel, including partially transparent edges.

PNG remains a predictable editing and interchange choice. Lossless WebP can be smaller, but verify that every destination in your workflow accepts it.

• Use alpha-aware formats for soft shadows and anti-aliased transparent edges.
• Avoid JPG for logos that must work on changing backgrounds.
• Keep SVG for vector artwork when the workflow supports vectors; these three formats are raster images.

Compatibility is a workflow question

Modern browsers support WebP, but a specific CMS, document editor, upload form, or older production system may still restrict accepted types. The relevant test is the destination you must use.

If a system rejects WebP, convert to JPG for opaque photographic content or PNG when transparency is required. Treat that converted file as a delivery derivative, not an improved master.

• Check the allowed MIME types and file extensions.
• Test transparency and color rendering after upload.
• Store the original separately so another derivative can be generated later.