What Are WebP and JPG?
JPG (also written JPEG) has been the dominant web image format since the 1990s. It uses lossy compression to shrink photos and complex images. Almost every camera, phone, and piece of software on the planet produces JPG files by default.
WebP is a modern image format released by Google in 2010 and widely adopted after 2018. It supports both lossy and lossless compression, transparency (like PNG), and animations (like GIF). It was specifically designed to be the successor to JPG for the web.
WebP vs JPG at a Glance
The quick comparison before we break down each dimension.
| Factor | WebP | JPG |
|---|---|---|
| Typical size vs JPG | 25 to 35% smaller | Baseline |
| Transparency | Yes | No |
| Animation | Yes | No |
| Browser support | All modern browsers | Universal |
| Best for | Web images | Print, email, legacy |
WebP vs JPG: File Size
This is where WebP wins decisively. According to Google's own benchmarks, WebP lossy images are 25–34% smaller than JPG at equivalent quality. Real-world results are often more dramatic — up to 80% smaller for typical web images.
Why does this matter? Smaller images mean faster page loads. Faster pages score better on Core Web Vitals, which Google uses as part of its page experience signals. Faster pages also convert better — studies show a 1-second delay reduces conversions by 7%.
Google's Core Web Vitals include LCP (Largest Contentful Paint), one of its page-experience signals. Images are the LCP element on most pages, so WebP is one of the fastest paths to a good LCP score.
WebP vs JPG: Image Quality
At the same file size, WebP produces noticeably better quality than JPG. At the same quality level, WebP produces a much smaller file. This is not a trade-off — it's a pure win.
The difference is most visible in images with gradients, text, and fine details. JPG compression creates 'blocking' artifacts in these areas. WebP handles them more cleanly.
WebP vs JPG: Browser Support in 2026
WebP is supported by 97%+ of browsers globally. This includes Chrome, Firefox, Safari 14+, Edge, Opera, iOS Safari, and all major Android browsers. Internet Explorer is the main exception — but IE has under 1% global market share in 2026.
For practical purposes, you can use WebP for all web images without fallbacks.
WebP vs JPG: When to Use Each
Use WebP for almost everything on the web. Use JPG only in these specific cases:
- WebP: Website product images, blog photos, hero banners, thumbnails
- WebP: Social media uploads (platforms accept WebP)
- JPG: Print production (WebP is not suitable for print workflows)
- JPG: Email marketing images (some email clients still don't render WebP)
- JPG: Legacy software or CMS that doesn't support WebP uploads
WebP vs PNG: What About Transparency?
WebP supports transparency (alpha channel), just like PNG. If you need transparent backgrounds, WebP is actually better than PNG — lossless WebP files are 26% smaller than equivalent PNG files. You don't need to use PNG for transparency anymore.
How to Convert JPG to WebP
The easiest way to convert JPG to WebP is with a free online tool. BatchSet converts any JPG, PNG, GIF, or TIFF to WebP in seconds — with quality control, resize options, and bulk conversion support.