WebP vs PNG vs JPEG isn't really a three-way tie — for most website use cases, one of the three is clearly the better default, and the other two are for specific situations. Here's how to actually decide.
What each format is good at
- JPEG — the long-standing default for photos. Lossy compression, no transparency support, universal compatibility. Good baseline, but not the most efficient option anymore.
- PNG — lossless, which means no quality loss at all, plus transparency support. Excellent for graphics, logos, and screenshots with sharp edges and flat colors. Heavy for photos, since lossless compression doesn't shrink photographic detail nearly as well as lossy formats do.
- WebP — a newer format built specifically to beat both at their own games: typically a quarter to a third smaller than an equivalent-quality JPEG for photos, while also supporting transparency like PNG. Broad support across every modern browser.
Why WebP is usually the right default now
For most website images — photos, hero images, product shots — WebP produces a meaningfully smaller file than JPEG at comparable visual quality, which directly affects page load speed. Smaller images mean faster pages, and faster pages affect both user experience and search ranking. Unless you have a specific reason to stick with JPEG or PNG, WebP is the more efficient default for new images going onto a site today.
When PNG is still the right call
WebP supports transparency, but PNG remains the safer choice for graphics that need to stay perfectly crisp — logos, icons, screenshots with text, illustrations with hard edges. PNG's lossless compression means zero quality degradation, which matters more for graphic elements than for photos, where a small amount of lossy compression is invisible anyway.
When JPEG still makes sense
Mostly for compatibility with older systems or specific workflows that expect it — camera exports, print production pipelines, or contexts where WebP support genuinely can't be assumed. For a modern website, this is increasingly the exception rather than the rule.
Converting existing images to WebP
If your site is carrying a lot of PNG images that are really photos (a common leftover from older CMS defaults), converting them to WebP is usually a quick, meaningful page-speed win:
- Drop your PNG into the PNG to WebP converter.
- Pick a quality level — higher preserves more detail, lower produces a smaller file.
- Download and drop the WebP file into your site or CMS.
Need to go the other direction, or convert from a different starting format? The general converter handles JPEG, PNG, WebP, and AVIF in any direction.
The quick decision
Photo or photo-like image on a modern site? WebP. Logo, icon, or graphic that needs transparency and zero quality loss? PNG. Working with an older system that specifically needs it? JPEG. For nearly everything else, WebP is the format doing the most work per kilobyte.