If you have ever wondered whether WebP is better than JPEG, or whether that logo should be a PNG, you are asking the right question. Choosing the correct format is one of the easiest ways to make a website faster without touching a single line of code. This guide compares WebP vs JPG vs PNG honestly, so you can pick the right tool for each image rather than defaulting to whatever your camera or design app produced.
The three formats in one sentence each
- JPG (JPEG) is a lossy format built for photographs, brilliant at squeezing down complex, colourful scenes but unable to store transparency.
- PNG is a lossless format built for graphics, logos and screenshots, with crisp edges and full transparency but large file sizes for photos.
- WebP is a modern format from Google that does both jobs, offering lossy and lossless modes, transparency and animation in far smaller files.
WebP vs JPG: compression and quality
For photographs, WebP vs JPG is the headline matchup. At a matched visual quality, lossy WebP files are typically 25–35% smaller than the equivalent JPEG. WebP achieves this with smarter block prediction and better entropy coding than the ageing JPEG standard, which dates back to the early 1990s. In practice that means a photo-heavy landing page can shed a meaningful chunk of its weight simply by re-encoding to WebP, with no visible loss to the naked eye, but a noticeably quicker load.
JPEG still has one advantage worth respecting: universal support. Every device, email client and legacy browser understands it. If you need an image that will open literally anywhere with zero fuss, JPEG remains the safe default. For the modern web, though, WebP usually wins on raw efficiency.
WebP vs PNG: transparency without the bloat
The WebP vs PNG contest matters most for graphics with sharp edges or transparent backgrounds, such as icons, logos, illustrations and UI elements. PNG is lossless and pixel-perfect, which is exactly why designers love it. The catch is size: a full-colour PNG photograph can be several times heavier than a JPEG of the same scene.
WebP offers a lossless mode that competes directly with PNG, usually producing files around 20–30% smaller while keeping the same crisp edges and alpha transparency. So if you like PNG's quality but not its weight, lossless WebP is often the upgrade you have been looking for. You can convert either way with our convert images to WebP tool and compare the results side by side.
Animation, transparency and other extras
PNG supports full 8-bit alpha transparency; JPEG supports none. WebP supports transparency in both its lossy and lossless modes, a genuinely useful trick JPEG cannot match. For short looping animations, WebP is also a far more efficient replacement for the venerable animated GIF, producing smoother motion at a fraction of the size. If you are weighing up formats more broadly, our image formats guide covers GIF, AVIF, SVG and TIFF too.
WebP vs JPG vs PNG: the comparison table
| Feature | JPG / JPEG | PNG | WebP |
|---|---|---|---|
| Compression type | Lossy | Lossless | Lossy & lossless |
| Best for | Photographs | Graphics, logos, text | Almost everything on the web |
| Transparency | No | Yes (full alpha) | Yes (both modes) |
| Animation | No | No | Yes |
| Typical file size | Small | Large | Smallest |
| Browser support | Universal | Universal | All modern browsers |
| Page-speed impact | Good | Poor for photos | Excellent |
The SEO and page-speed angle
Image weight is one of the biggest contributors to a slow page, and page speed feeds directly into Core Web Vitals, the metrics Google uses as a ranking signal. Because WebP consistently produces the smallest files across both photos and graphics, switching to it can improve your Largest Contentful Paint and lower bounce rates. Faster pages simply rank and convert better, so optimising your images is a quiet win for UK site owners chasing better search visibility.
Browser support in 2026
WebP support is no longer a concern. Every current version of Chrome, Edge, Firefox and Safari renders WebP natively, and combined global coverage sits comfortably above 97%. For the tiny fraction of ancient browsers that cannot, a simple <picture> element with a JPEG or PNG fallback covers you. For the overwhelming majority of visitors, you can serve WebP with total confidence.
The verdict: when to use each
Here is our recommendation, distilled:
- Use WebP for nearly all web images, as it wins on size for both photos and graphics and keeps transparency where you need it.
- Use JPG when you need guaranteed compatibility everywhere, such as email attachments or older systems, and the image is a photograph.
- Use PNG when you need pixel-perfect, lossless graphics for editing, print masters or archival originals, or a universally supported transparent image.
The honest summary is that WebP usually wins for the web, while JPG and PNG still hold useful niches around compatibility and lossless archival. The good news is you do not have to guess. Our free tool produces both a lossless and a lossy WebP for every image and shows both file sizes, so you can pick the smaller one with confidence. Everything runs entirely in your browser: no uploads, no sign-up, no watermarks, free forever and made in the UK.
Ready to see the difference on your own images? Open the compressor, drop in a JPG or PNG, and watch it shrink. You can also jump straight to compressing JPG files or compressing PNG files if you already know which format you are starting from.