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June 21, 2026 · 6 min read
Pick the wrong image format and you either ship a blurry photo or a file ten times heavier than it needs to be. The good news: the decision almost always comes down to a few simple questions. This guide walks through the four formats you actually meet in 2026 — JPEG, PNG, WebP and AVIF — and when each one wins.
JPEG (or JPG) has been the web's workhorse for nearly 30 years. It uses lossy compression, meaning it throws away detail your eye is unlikely to notice in order to shrink the file. For photographs — anything with smooth gradients, skin tones or natural scenes — it strikes an excellent balance between size and quality.
Its weaknesses: no transparency, and visible artifacts around sharp edges and text. Never save a logo, screenshot or line drawing as JPEG. But for a holiday photo headed to email or a blog, JPEG at 70–80% quality is hard to beat and works literally everywhere.
PNG is lossless: it keeps every pixel exactly as it was. That makes it the right choice for logos, icons, screenshots, diagrams and anything with text or hard edges. It also supports transparency, which JPEG cannot.
The catch is size. A photo saved as PNG can be five to ten times larger than the same photo as JPEG. Use PNG when you need crisp edges or a transparent background — not for full-colour photographs.
WebP, developed by Google, does both jobs: it has a lossy mode that beats JPEG by roughly 25–35% at the same quality, and a lossless mode that beats PNG. It also supports transparency and animation.
By 2026 every major browser supports WebP, so it's a safe modern default for the web. If you want one format that handles both photos and graphics while keeping pages light, WebP is usually it.
AVIF is the newest of the four and compresses the hardest — often 50% smaller than JPEG at comparable quality, with excellent handling of gradients and dark scenes. It supports transparency, HDR and animation.
The trade-offs: encoding is slower, and while browser support is now broad, a few older devices and apps still can't open AVIF. Use it for the web when squeezing every kilobyte matters, but keep a JPEG or WebP fallback if your audience uses older software.
Photo for the web and you want it as small as possible: AVIF, with WebP as fallback. Photo that must open anywhere: JPEG. Logo, icon, screenshot or anything with transparency: PNG, or WebP/AVIF lossless to save space. Still unsure: WebP is the modern all-rounder.
Whatever you choose, the file is almost always bigger than it needs to be straight out of the camera or design tool. Run it through our compressor, pick your output format, and watch the size drop — everything happens in your browser, so your image never leaves your device.