WebP vs JPG: Which Is Better for Websites?
WebP vs JPG can be confusing when you're trying to optimize website images. Here's a simple comparison of file size, quality, compatibility, performance and real-world use.
If you've ever uploaded an image to a website and noticed that the page suddenly feels slower, the image format might be part of the problem.
For years, JPG has been one of the standard formats for website images. It works almost everywhere, keeps file sizes reasonably small and is easy to use.
But there's another option that has become increasingly common: WebP.
WebP was designed to provide smaller image files while maintaining good visual quality. That's particularly useful for websites, where image size can have a direct impact on how much data a visitor needs to download.
Quick answer: For most modern websites, WebP is usually the better choice for photographic images. JPG is still an excellent option when compatibility and simplicity are more important.
What Is JPG?
JPG, also known as JPEG, is one of the most widely used image formats on the internet. It has been around for decades and remains supported by virtually every browser, operating system, phone and image editing application.
JPG uses lossy compression. During compression, some image information is removed to reduce the file size. When done properly, the resulting image can still look very close to the original.
JPG works particularly well for photographs and images with lots of colors, gradients and fine details.
- Photographs
- Product images
- Travel photos
- Blog images
- Images with many colors and details
What Is WebP?
WebP is a modern image format developed by Google. It was created to provide efficient image compression while keeping image quality at a useful level.
One of the useful things about WebP is that it supports both lossy and lossless compression. It can also support transparency, which gives it more flexibility than JPG.
For websites, a major advantage of WebP is that images can often be delivered using less data than comparable JPG files.
- Smaller image files in many situations
- Good visual quality
- Lossy and lossless compression options
- Transparency support
- Strong support in modern browsers
WebP vs JPG: What's the Difference?
The easiest way to compare WebP and JPG is to look at the features that matter most when you're working with website images.
| Feature | WebP | JPG |
|---|---|---|
| Typical file size | Usually smaller | Usually larger |
| Lossy compression | Yes | Yes |
| Lossless compression | Yes | No |
| Transparency | Yes | No |
| Modern browser support | Excellent | Excellent |
| Website use | Excellent | Excellent |
| Older software compatibility | Can vary | Excellent |
Is WebP Smaller Than JPG?
In many cases, yes. A properly compressed WebP image can often be smaller than an equivalent JPG while maintaining similar visual quality.
However, there isn't a fixed amount of compression that applies to every image. The final file size depends on the original image, its dimensions, the amount of detail and the compression settings you choose.
For example, a detailed photograph may compress differently from a simple graphic. A JPG that is already heavily compressed may also see a smaller improvement when converted to WebP.
Smaller isn't automatically better. The goal is to find the right balance between file size, image quality and website performance.
Does WebP Have Better Quality Than JPG?
Not automatically.
WebP isn't simply a higher-quality version of JPG. Both formats can produce excellent-looking images, and both can look poor when compressed too aggressively.
If you push compression too far, you may notice blurry details, loss of texture or other compression artifacts regardless of which format you're using.
That's why image optimization isn't about choosing the format with the smallest possible file size. It's about finding a practical balance between quality and size.
Why WebP Is Good for Websites
Images can make up a significant portion of the total data loaded by a webpage. A page with a large hero image, product photos, thumbnails and other graphics can become surprisingly heavy.
Using an efficient image format can reduce the amount of data visitors need to download.
Smaller Files
WebP can often reduce image file size while keeping visual quality at a useful level.
Faster Loading
Smaller image downloads can help reduce the amount of data a webpage needs to load.
Better for Mobile
Smaller files can be particularly useful for visitors using mobile networks or slower connections.
Efficient Storage
Smaller image files can also reduce storage and data transfer requirements for image-heavy websites.
When Should You Still Use JPG?
WebP doesn't mean JPG has become useless. JPG remains a very practical format, especially when compatibility is important.
When you're working with older software
Some older applications and systems may not handle WebP as smoothly as newer software. JPG is usually the safer option when you need broad compatibility.
When you're sharing images
If you don't know what software or device someone will use to open an image, JPG is a familiar and reliable choice.
When you need a universal format
JPG has been supported across computers, phones, browsers and image editors for many years. That makes it a convenient format for general-purpose image sharing.
When keeping an original image
You can also keep your original high-quality image and create optimized WebP versions specifically for your website.
WebP vs JPG for WordPress Websites
If you're running a WordPress website, image optimization can make a noticeable difference to the amount of data your pages need to load.
One common mistake is uploading the original image directly from a phone or camera without checking its dimensions or file size first.
If an image only needs to appear at 800 pixels wide, there is usually little reason to upload a huge original that is several thousand pixels wide.
A practical workflow is:
Original image → Resize → Compress → Convert to WebP → Upload
You can use the IMAGE24 Image Converter to convert images between supported formats directly in your browser.
If your main goal is reducing an image's file size, you can also use the IMAGE24 Image Compressor .
WebP vs JPG for SEO
Simply changing a JPG file to WebP isn't a magic SEO trick. Search engines don't reward a website just because it uses a particular image extension.
However, website performance and user experience matter. If properly optimized WebP images help reduce the amount of data your pages need to load, they can be a useful part of a broader image optimization strategy.
Good image optimization also includes:
- Using appropriate image dimensions
- Compressing images before uploading them
- Choosing an appropriate image format
- Using responsive images
- Adding descriptive alt text
- Avoiding unnecessarily large image files
In other words, WebP is only one part of website image optimization.
Is WebP Always Better Than JPG?
No.
There isn't one image format that's perfect for every situation.
For photographs on modern websites, WebP is often an excellent choice because it can provide a good balance between image quality and file size.
JPG remains useful when maximum compatibility is more important, particularly for older software, systems or workflows.
Other formats can also make sense depending on the image. PNG can be useful for certain graphics and transparency needs, while SVG is ideal for true vector graphics.
How to Convert JPG to WebP
If you already have JPG images, converting them to WebP can be a simple way to test whether you can reduce file sizes without noticeably affecting image quality.
A good approach is to compare the original JPG and converted WebP versions side by side.
- Check the original JPG file size.
- Convert the image to WebP.
- Compare the new file size.
- Look closely at image quality.
- Choose a compression level that looks good.
You can convert JPG to WebP with IMAGE24 directly in your browser.
If the image is still too large, you can compress the image before using it on your website.
WebP vs JPG: Final Verdict
So, which is better for websites: WebP or JPG?
For most modern websites, we'd choose WebP for many photographic images. It offers an efficient combination of file size and image quality, while modern browser support is strong.
But JPG isn't outdated or useless. It's still one of the most reliable image formats available and remains a good choice when compatibility and simplicity are important.
Instead of asking which format is always better, ask: Which format gives me the best quality for the smallest practical file size?
For many website images today, that answer will be WebP. But the best image isn't necessarily the one with the newest file extension. It's the one that's properly optimized for the job.
Ready to optimize your images?
Convert your images to WebP or reduce their file size before uploading them to your website.
Frequently Asked Questions
Here are some of the most common questions about WebP and JPG for websites.
For many modern websites, WebP is often the better choice because it can provide smaller image files while maintaining good visual quality. JPG is still useful when compatibility is the main priority.
WebP can often produce a smaller file than an equivalent JPG at a similar visual quality. The exact difference depends on the image, dimensions and compression settings.
WebP can help reduce the amount of image data a browser needs to download. This can contribute to better page loading performance, especially when a website contains many large images.
Not necessarily. WebP is a good option for many website images, but JPG can still be useful for compatibility and existing workflows. Compare the file size and quality before replacing large groups of images.
Yes. JPG remains a widely supported and practical image format. It is particularly useful for photographs and situations where broad compatibility is important.
You can use an image converter to convert JPG files to WebP. IMAGE24 provides a browser-based image converter that can be used without installing image editing software.
Simple image tools for everyday image work.