Images · Web Performance
JPG vs PNG vs WebP — Which to Use When
Three formats, three different strengths. Get the pick right and your pages load faster, look sharper, and score higher on Core Web Vitals. Get it wrong and you're either shipping bloated files or losing transparency and detail. Here's the honest breakdown.
Quick reference
| Feature | JPG | PNG | WebP |
|---|---|---|---|
| Compression | Lossy | Lossless | Both |
| Transparency | No | Yes (alpha) | Yes (alpha) |
| Animation | No | No (APNG rare) | Yes |
| Best for | Photos | Logos, screenshots, UI | Almost everything web |
| Typical size (same photo) | 100 KB | 300 KB | 70 KB |
| Browser support | Universal | Universal | All modern (2020+) |
| Max colors | 16.7M | 16.7M + alpha | 16.7M + alpha |
| Encode speed | Fast | Fast | Slower |
When to use JPG
Photos, hero images, thumbnails, anything where subtle color transitions matter more than pixel-perfect edges. JPG's lossy compression throws away detail your eye barely notices, so a 200 KB JPG can look indistinguishable from a 2 MB PNG of the same photo.
When to use PNG
Logos, icons, product shots on a transparent background, screenshots of text or UI, illustrations with sharp lines. PNG is lossless, so text stays crisp and edges don't develop the fuzzy "JPG artifacts" that plague low-quality JPGs. Keep PNG for design assets — but convert them to WebP before serving on the web.
When to use WebP
Almost always, if the destination is a web page. WebP supports both lossy and lossless modes, transparency, and animation, and it's 25–50% smaller than the equivalent JPG or PNG. Every modern browser handles it. The one time to pick something else is when the file leaves the web — email attachments, print handoffs, or upload to a legacy CMS.
What about AVIF and JPEG XL?
AVIF compresses 20–30% better than WebP but takes far longer to encode; use it for high-traffic hero images where the extra bandwidth savings compound. JPEG XL is technically superior to both but hasn't reached universal support — treat it as experimental in 2026.
Try it on Toolzer
- Image Compressor — reduce JPG/PNG/WebP file size without visible quality loss.
- HEIC to JPG — convert iPhone HEIC photos to universal JPG.
- SVG to PNG — rasterize vectors at any size.
- Image Cropper — crop and resize any image in your browser.
Frequently asked questions
Which format has the smallest file size?+
WebP is typically 25–35% smaller than an equivalent-quality JPG and 50%+ smaller than PNG. AVIF is even smaller but has slower encode times and slightly narrower browser support.
Does WebP work in every browser?+
Yes — every current browser (Chrome, Firefox, Safari, Edge, Opera) supports WebP. Only very old browsers (IE11, Safari <14) don't, and those account for a fraction of a percent of traffic in 2026.
Should I still use JPG in 2026?+
For photos shared over email, uploaded to legacy CMSs, or printed, JPG is still the safest universal format. For anything web-native, WebP is a better default.
When should I keep PNG?+
Whenever you need lossless quality or transparency: logos, icons, screenshots with sharp edges, UI mockups, and images with text. WebP also supports transparency, but PNG is still the format most design tools export cleanly.
Is AVIF ready to replace WebP?+
AVIF gives 20–30% better compression than WebP at the same quality, but it takes 5–10× longer to encode and doesn't work on some legacy Android devices. Use WebP as your default and AVIF as a progressive enhancement.