WebP has been around since 2010, browser support has been essentially universal for several years now, and the file size advantages over JPG and PNG are well documented and consistent. And yet the majority of websites are still serving JPG and PNG images, leaving meaningful performance gains on the table simply because nobody got around to making the switch.

This isn't a complicated optimization. Converting your existing images to WebP takes minutes, requires no coding, and the results show up immediately in page weight and load time. Here's why it's worth doing and exactly how to do it.

Why WebP Is Worth Switching To

The case for WebP comes down to one number: 25–35% smaller file sizes than JPG at the same visual quality. That's not a best-case scenario figure — it's a consistent, real-world result across a wide range of photographic content. For PNG graphics with transparency, WebP lossless compression typically achieves 20–30% smaller files than PNG.

To put that in practical terms: if your website currently loads 2 MB of images, switching to WebP gets you to roughly 1.3–1.5 MB with no visible quality difference. On a page with heavier image content — an ecommerce product page, a photography portfolio, a news article with multiple images — the absolute savings are larger. That reduction in page weight translates directly to faster load times, better Core Web Vitals scores, and lower bandwidth costs if you're paying for data transfer.

The other advantage is that WebP does both jobs — lossy compression for photographs (like JPG) and lossless compression with transparency for graphics (like PNG). You don't need two formats; WebP handles both content types well. For a website that currently serves a mix of JPG photos and PNG graphics, standardizing on WebP simplifies the image workflow.

Browser Support: Is It Safe to Use WebP?

This used to be the sticking point. When WebP launched, only Chrome supported it, and serving WebP to Firefox or Safari users meant broken images. That situation changed progressively — Firefox added support in 2019, Safari in 2020 — and today WebP is supported by every major browser in current use.

The only meaningful exceptions are Internet Explorer (which Microsoft officially retired in 2022) and very old versions of Safari on older iOS devices. Depending on your audience, these may represent anywhere from effectively zero to a small percentage of your traffic. For most websites, serving WebP to 97–99% of visitors with no fallback is perfectly acceptable. If you're serving a specialized audience where older browsers are more common, the prudent approach is to use the HTML <picture> element to serve WebP with a JPG fallback — but for the majority of sites, WebP without a fallback is fine.

Check your own analytics: Before making format decisions based on general browser statistics, look at your actual visitor data. Google Analytics and most analytics platforms show browser breakdown. If IE and old Safari represent less than 1% of your traffic — which is typical for most sites — serving WebP without a fallback is a reasonable call.

What to Convert and What to Keep as JPG or PNG

WebP is the right choice for images that will be displayed in browsers. It's not always the right choice for every image file you have:

Convert to WebP: Any image that lives on your website and will be viewed in a browser. Hero images, product photos, blog post images, thumbnails, background images, icons served as image files, PNG graphics used in page layouts.

Keep as JPG or PNG: Images that need to work outside browsers — photos delivered to clients for printing, images attached to emails, images embedded in Word documents or PDFs, images that will be downloaded and used in software that may not support WebP. Keep your original JPG or PNG for these use cases and convert a copy to WebP for the web version.

No benefit from converting: SVG graphics (already vector, WebP doesn't apply), very small icons that are already tiny as PNG, images already served through a CDN that handles format conversion automatically.

How to Convert to WebP with ImageToolHub

The WebP Converter converts JPG, PNG, GIF, and other formats to WebP — and converts WebP back to JPG or PNG — entirely in your browser. No uploads, no accounts, no software to install.

The conversion process:

  1. Drop your image into the converter. It accepts JPG, PNG, GIF, and BMP as input.
  2. Choose your output quality. For photographic content, 80–85% quality produces files that are visually identical to the original at a fraction of the size. For graphics and images with transparency, the lossless option preserves every pixel perfectly.
  3. Download the WebP file. The output filename matches the input with a .webp extension, so your file organization stays intact.

If you're converting a large set of images, process them through the Image Compressor first (or use the Bulk Compressor for a whole folder), then convert the compressed JPGs to WebP. Compressing before converting typically produces slightly better results than converting and relying solely on WebP compression, though the difference is small.

Using WebP on Your Website

Once you have WebP versions of your images, actually using them on your site is straightforward in most cases:

Direct replacement. If your audience is solidly modern browsers, simply swap the JPG/PNG files for WebP files and update the src attributes in your HTML. Done.

The <picture> element with fallback. If you want to be cautious about older browser compatibility, the HTML <picture> element lets you specify WebP as the preferred source with a JPG fallback:

<picture>
  <source srcset="image.webp" type="image/webp">
  <img src="image.jpg" alt="Description">
</picture>

Browsers that support WebP load the <source>; browsers that don't fall back to the <img> tag. It's a small amount of extra markup for guaranteed compatibility.

CMS and platform considerations. WordPress has supported WebP uploads since version 5.8, and most modern themes and page builders handle it without any special configuration. Shopify serves WebP automatically through its image CDN. Other platforms vary — check your specific CMS documentation if you're not sure whether WebP is supported in the media library.

Converting Back from WebP

One concern people sometimes have about committing to WebP is the question of reversibility — what if you need a JPG or PNG version later? The WebP Converter handles both directions, so converting a WebP back to JPG or PNG is as straightforward as the original conversion. That said, the best practice is always to keep your original JPG or PNG files as the master copies and use WebP as the web-delivery format derived from them. That way you always have a high-quality original to work from regardless of what format decisions you make downstream.

WebP is one of those optimizations that's easy to keep putting off because the current setup works well enough. It does work — but it's working harder than it needs to, serving files that are consistently larger than they have to be. Converting your web images to WebP is an afternoon of work that pays off in faster pages and better scores for as long as those images are on your site. The converter is right there — it takes about ten seconds per image.