JPG vs WebP: Which Format Is Better for Your Images?

WebP is Google's modern image format designed to replace JPEG on the web. It delivers files that are 25–35% smaller than an equivalent JPG at the same visual quality, also supports lossless compression, and — unlike JPG — can handle transparent backgrounds through an alpha channel. All major browsers have supported WebP since 2020, making it the practical default for any new web project.

File size comparison

The size savings are consistent and significant across a wide range of images. Here are typical real-world numbers for a 1920×1080 photograph:

In practice, a page with ten large JPGs might total 5 MB. Switching those same images to WebP brings that figure down to roughly 3.3 MB — with no visible difference to the viewer. For e-commerce sites with hundreds of product images, the cumulative bandwidth saving is substantial.

Quality comparison

Both JPG and WebP use lossy compression by default, meaning they discard some image data to achieve smaller sizes. The key difference is efficiency: WebP's compression algorithm (based on the VP8 video codec) achieves the same perceptual quality at a lower file size than JPG's older DCT-based algorithm.

At very high compression levels, JPG tends to introduce blocky artifacts called ringing or mosquito noise around sharp edges. WebP handles high compression more gracefully, producing smoother degradation at equivalent settings.

WebP also supports a lossless mode — equivalent to PNG — whereas JPG is always lossy. This makes WebP a genuinely versatile format that can replace both JPG and PNG depending on the use case.

Browser and software support

Browser support for WebP is effectively universal for anyone using a modern device:

• Chrome — since version 23 (2012)
• Firefox — since version 65 (2019)
• Safari — since version 14 / iOS 14 (2020)
• Edge — since version 18 (2018)
• Samsung Internet, Opera, and all Chromium-based browsers — full support

As of 2024, global browser support for WebP exceeds 97%. The only meaningful exception is Internet Explorer, which reached end of life in June 2022.

Desktop software support is more varied. Adobe Photoshop has supported WebP since 2021. Windows Photo Viewer and some older tools still default to JPG. If you need to share images with people who use older or non-web software, JPG remains the safer choice for broad compatibility.

Transparency support

One of JPG's fundamental limitations is that it does not support transparency. If you place a JPG on a colored background, any originally transparent areas are filled with a solid color — usually white. This makes JPG unsuitable for logos, product cutouts, UI elements, and any other image where background transparency matters.

WebP supports a full 8-bit alpha channel, identical to PNG. You can have transparent, semi-transparent, or fully opaque pixels in the same WebP file. Combined with WebP's lossy compression, this means you can have a transparent product image at a fraction of the file size a PNG would require.

When to use JPG

Despite WebP's technical advantages, there are situations where JPG remains the better choice:

• Sharing with people using older software — email clients, legacy photo editors, and older operating systems all handle JPG natively without plugins
• Professional printing — most print shops and RIP software expect JPG or TIFF; WebP is not yet widely supported in the print workflow
• Universal compatibility is critical — if your image will be distributed across unknown systems (kiosks, embedded devices, legacy intranets), JPG is the lowest common denominator
• Digital cameras and RAW workflows — DSLR and mirrorless cameras output JPG (and RAW) natively; WebP is a conversion destination, not a capture format

When to use WebP

WebP is the right choice in most modern web contexts:

• Web publishing and blogs — hero images, article photos, and thumbnails all benefit from the smaller file size, improving page load time
• Page speed optimization — Google's Core Web Vitals (LCP) rewards faster loading pages; WebP is one of the easiest wins
• E-commerce product images — especially product cutouts that need transparency, which WebP handles better than JPG
• Mobile-first sites — users on cellular connections benefit most from the bandwidth savings
• Next.js and modern frameworks — Next.js automatically serves WebP when using the <Image> component; pre-converting avoids server-side conversion overhead

How to convert JPG to WebP

Converting JPG files to WebP is straightforward. You can do it directly in your browser without uploading to an external server:

• JPG to WebP converter — drag and drop your JPG files and download the converted WebP files instantly

For bulk conversions, the same tool supports batch processing — drop multiple files at once and download them all as a ZIP archive. No signup required.

How to convert WebP to JPG

If you receive a WebP file that needs to be shared with older software or a print shop, you can convert it back to JPG equally easily:

• Image Converter — select WebP as the source format and JPG as the output; supports all common image formats

Note that converting WebP back to JPG will apply lossy compression a second time, which can slightly reduce quality compared to the original. Use a high quality setting (80–90) if the resulting JPG is important.

Conclusion

For websites built in 2025 and beyond, WebP is the clear winner: smaller files, equal or better quality, transparency support, and universal browser coverage. Switching from JPG to WebP is one of the fastest ways to improve your Core Web Vitals and page load speed without changing anything else on the page.

If you already have a large library of JPG images, you don't need to convert everything at once. Start with the largest images — hero banners, above-the-fold photos — where the file size reduction has the most impact on page performance. Use the Image Compressor to squeeze any remaining JPGs before deciding whether to convert them to WebP.