WebP vs PNG vs JPG — Which Format Should You Use?
WebP vs PNG vs JPG: which image format should you use for websites in 2026? Compare quality, file size, browser support, and use cases. Free conversion tools.
The Short Answer
Use WebP for almost everything web-related. It's smaller than JPG and PNG at comparable quality, supports transparency, and is supported by 97%+ of browsers in 2026. The only reasons not to use WebP are email images (some email clients don't support it) and when you need the absolute maximum lossless quality for archival.
JPG Explained
JPG (also JPEG) was created in 1992 and uses discrete cosine transform (DCT) compression. It's lossy — meaning it permanently discards image data on save. JPG is excellent for photographs and complex images with many colors and gradients.
When to use JPG: Email attachments (maximum compatibility), print production (some workflows require it), when the recipient won't have WebP support. File size: typically 100KB–2MB for a high-quality web photo.
PNG Explained
PNG uses lossless compression — every pixel is preserved exactly. This makes it ideal for graphics with text, logos, screenshots, and anything requiring transparency (the PNG alpha channel).
When to use PNG: Logos and icons, screenshots with text, images that need transparent backgrounds, graphics where exact pixel accuracy matters. File size: typically 2–10× larger than the equivalent JPG for photos.
WebP Explained
WebP was developed by Google in 2010 based on the VP8 video codec. It supports both lossy and lossless compression, transparency (like PNG), and animation (like GIF). The same WebP file is typically 25–35% smaller than JPG and 26% smaller than PNG at equivalent quality.
When to use WebP: Virtually all web images — photos, graphics, screenshots, icons. Convert at /imagetools/webp/. Browser support is now 97%+ globally.
AVIF — The Next Generation
AVIF (AV1 Image File Format) was finalized in 2019 and achieves even better compression than WebP — often 50% smaller at the same quality. Browser support reached 90%+ in 2024. Convert at /imagetools/avif/.
For new projects targeting modern browsers, AVIF is the most efficient format available.
Useful Tools for This Guide
Frequently Asked Questions
Is WebP better than JPG? expand_more
Yes, for web use. WebP achieves 25–35% smaller file sizes than JPG at equivalent perceived quality, and also supports transparency and animation. The only edge case where JPG wins is maximum email client compatibility.
Does PNG support transparency? expand_more
Yes — PNG supports an alpha channel for full or partial transparency. WebP also supports transparency (RGBA WebP). JPG does not support transparency.
What's the best image format for a website in 2026? expand_more
WebP for most images, AVIF for cutting-edge performance, PNG for logos and transparent graphics, JPG only for email compatibility. SVG for icons and simple graphics.
How do I convert JPG to WebP for free? expand_more
Use Glopix at /imagetools/webp/ — upload your JPG, set quality to 82, and download the WebP. Also supports batch conversion.
What is AVIF and should I use it? expand_more
AVIF is the newest major image format, achieving 50% better compression than WebP. It has ~90% browser support in 2026. For cutting-edge sites targeting modern browsers, yes — use AVIF. For maximum compatibility, WebP is the safer choice.