WebP promises smaller images than JPG with the same quality. Should you switch everything? Here is an honest comparison.
File size and quality
At the same visual quality, WebP photos are commonly 25 to 35 percent smaller than JPG. That means faster pages and lower bandwidth. Quality is comparable, and WebP often keeps gradients and sharp edges slightly better at the same size.
Features
| JPG | WebP | |
|---|---|---|
| Lossy compression | Yes | Yes |
| Lossless compression | No | Yes |
| Transparency | No | Yes |
| Animation | No | Yes |
| Typical photo size | Baseline | 25 to 35% smaller |
Compatibility
JPG works literally everywhere. WebP works in all current browsers (Chrome, Edge, Firefox, Safari), but some older software, email clients, print shops and upload forms still reject it. If you must be sure a file opens anywhere, use JPG.
Does WebP help SEO?
Indirectly, yes. Search engines do not rank a page higher just for using WebP, but smaller images mean faster loading and better Core Web Vitals, which are part of Google’s page experience signals. See our image optimization guide.
When to use each
Use WebP when:
- the images are for your own website or app
- you want transparency without huge PNG files
- every kilobyte counts
Use JPG when:
- you are sending files to other people or services
- the picture is going to a form or print shop
- you need the widest compatibility
How to convert
- JPG to WebP for faster websites
- PNG to WebP to shrink graphics and keep transparency
- WebP to JPG when something will not accept WebP
- WebP to PNG for lossless editing
All conversions run privately in your browser and can be done in bulk.
What about AVIF?
AVIF compresses even better than WebP, but support in tools and forms is less complete. A common approach is to serve AVIF or WebP to modern browsers and keep JPG as a fallback.
Quick decision
Website images: WebP. Anything you hand to someone else: JPG.
Where WebP wins
At the same visual quality, WebP files are commonly 25 to 35 percent smaller than JPG. It also supports transparency and animation, so it can replace PNG and GIF in many cases. Smaller files mean faster pages, which helps visitors and search rankings.
Where JPG still wins
- Maximum compatibility with old software, printers and email clients
- Some stock sites, print labs and marketplaces only accept JPG
- Simple, predictable results when sharing with non-technical people
Practical approach for a website
Serve WebP to visitors and keep your JPG originals as the master files. Most modern WordPress setups handle this, or you can upload WebP directly. Convert with JPG to WebP and go back with WebP to JPG when someone needs a file they can open anywhere.
Quality tips
Use quality 75 to 80 for WebP photos. Check faces and gradients before bulk converting. Run the final files through the image compressor to confirm the savings.
For a wider comparison that includes AVIF and PNG, see JPG vs PNG vs WebP vs AVIF.
Frequently asked questions
How much smaller is WebP than JPG?
Typically 25 to 35 percent smaller at similar visual quality, depending on the picture.
Do all browsers support WebP?
All current major browsers do. Some older software, email clients and upload forms still do not accept WebP files.
Can I convert WebP back to JPG?
Yes. Converting WebP to JPG is quick, but it will not restore detail that was already compressed away.
Should I convert my whole website to WebP?
For photos and graphics served on your own site, yes, ideally with a JPG or PNG fallback if you support very old browsers.
