WebP vs PNG vs JPEG: Which Format Should You Use?

For most web work in 2026, WebP is the right default. Use PNG only when transparency plus lossless matters. Use JPEG only when the destination cannot handle WebP - typically email, legacy tools, or print workflows.

WebP is a modern format from Google that supports both lossy and lossless compression, transparency, and animation. Browser support is 95%+ - every browser released since 2020 handles it natively.

In lossy mode, WebP files are typically 25-35% smaller than JPEG at the same visual quality. In lossless mode, they are 25-30% smaller than PNG. WebP is the format most publishers should be exporting today unless there is a specific reason not to.

PNG is a lossless raster format with full alpha transparency. Use it for logos, icons, UI elements, screenshots of text, and any image you might want to edit later. Photographs in PNG are almost always the wrong choice - the file will be 5-10x larger than a visually identical WebP or JPEG.

PNG-8 (palette PNG, up to 256 colors) is dramatically smaller than PNG-24 for images with limited color, like logos and UI icons. Many exporters default to PNG-24; switching to PNG-8 for eligible images can shrink files 4x.

JPEG is the oldest of the four and the most universally supported. Every image editor, email client, printer, and legacy system understands it. It is lossy only - each save cycle degrades quality slightly.

JPEG does not support transparency. Use it when you are certain the destination system does not accept WebP, or when you need the widest possible compatibility (email attachments, print, older CMSs).

AVIF is the newest option, based on the AV1 video codec. It compresses roughly 20% smaller than WebP at the same quality. Trade-offs: encoding is 10-20x slower than WebP, browser support is ~93% (Safari added support in 2022, older browsers do not decode it), and tooling is less mature.

AVIF is a strong choice for high-traffic sites where every kilobyte saved compounds across millions of requests. For most sites, WebP is a simpler default with negligible quality difference.

The right format depends almost entirely on the image type:

• Photograph on the web → WebP (or AVIF for high-traffic sites).
• Logo, icon, UI element → PNG (lossless) or lossless WebP.
• Screenshot with text → PNG or lossless WebP - JPEG will smear the text.
• Photo for email or print → JPEG at quality 85.
• Animated image → WebP or GIF (WebP is far smaller).