What Is a WEBP File and How Do You Open One?

A WEBP file is a modern image format created by Google to make pictures on the web load faster. In plain terms, it's an image that combines the best traits of the older formats: the small file sizes of JPEG, the transparency of PNG, and even the animation of GIF, all in one. That's why so many websites now serve their images as WebP, and it's also why you've probably ended up with a mysterious .webp file after saving a picture from the internet, only to find that some older program or upload form won't accept it.

The reassuring news is that WebP is easy to open on almost any up-to-date device, and converting it to a more familiar format like JPG or PNG takes only a few seconds when you need to. This guide explains what a WEBP file actually is, why the web has embraced it, how to open one wherever you are, and the simplest ways to convert it for maximum compatibility.

What WebP Is and Where It Came From

Google introduced WebP in 2010 with a single goal: shrink the size of images on the web without sacrificing how they look, so pages would load faster and use less data. It was built to be a single format that could do everything the older image formats did, but more efficiently.

The efficiency gains are real and significant. A lossy WebP image is typically around 25 to 34 percent smaller than an equivalent JPEG at the same visual quality, and a lossless WebP is usually about 26 percent smaller than the same image saved as a PNG. For a website loading dozens of images, those savings add up to noticeably faster pages, which is why WebP has become a default choice for web developers and a factor in search rankings, where page speed matters.

Why WebP Combines the Best of Every Format

What makes WebP genuinely clever is that it merges capabilities that used to require choosing between formats.

Traditionally, you had to pick: JPEG gave you small photos but no transparency, PNG gave you transparency and lossless quality but large files, and GIF gave you animation but poor color and bulk. WebP does all three. It offers lossy compression like JPEG for small photographic files, lossless compression and transparency like PNG for graphics and logos with see-through backgrounds, and animation like GIF but at far smaller sizes and better quality.

That versatility is exactly why a website might use WebP for its photos, its logos, and its animated banners alike, standardizing on one efficient format instead of juggling three older ones.

Why You Keep Running Into WEBP Files

Most people first encounter WebP by accident. You right-click an image on a website, choose "Save image as," and it downloads as a .webp file rather than the .jpg or .png you expected. Then you try to open it in an older photo viewer, insert it into a document, or upload it to a site that only accepts JPG or PNG, and it doesn't cooperate.

This isn't a corrupted file or a mistake on your part. It's simply that the website was serving its images in WebP for speed, and the raw file carries that format when you save it. The image is perfectly fine; it's just in a format some older software and certain upload forms don't recognize yet.

How to Open a WEBP File on Any Device

The single easiest way to open any WebP file is to drag it into a web browser. Every modern browser (Chrome, Edge, Firefox, and Safari) displays WebP natively, so if you drop the file into a browser tab or open it with your browser, it will show up instantly. Since WebP is a web format, this always works.

Beyond the browser, support is now widespread. On Windows 10 and 11, the built-in Photos app opens WebP files natively, so a simple double-click usually works. On a Mac, Preview has supported WebP since macOS Big Sur, and newer versions handle it without any add-ons. On Android and iPhone, modern versions open WebP through the gallery and Photos apps, and Google Photos displays it everywhere.

For editing, most current image editors support WebP directly. Recent versions of Adobe Photoshop open and save WebP natively, and the free editor GIMP handles it as well. Where you'll still hit trouble is with older software, legacy versions of Windows Photo Viewer, dated editing programs, and certain websites or forms that only accept JPG or PNG. In those cases, the fix is to convert.

How to Convert a WEBP File to JPG or PNG

When something won't accept a WebP file, converting it to a classic format solves the problem immediately, and a browser-based tool makes it effortless.

For the widest compatibility, the best target is JPG, since it's accepted virtually everywhere. To make a saved web image work in any program or upload form, convert WebP to JPG: upload the file, convert, and download a standard JPEG. This is the right move for photographs and for most situations where you just need the image to open or upload without fuss.

If your WebP image has a transparent background, such as a logo or an icon, converting to JPG would fill that transparency with a solid color, so you'll want to preserve it instead. In that case, convert WebP to PNG, which keeps the transparent background intact and gives you a lossless copy. Choosing between the two comes down to a simple rule: JPG for photos, PNG when transparency matters.

Converting the Other Direction, Toward WebP

WebP isn't only something to convert away from. If you run a website or care about page speed, converting your images into WebP is one of the most effective ways to make pages load faster, which is the whole reason the format exists.

If you have a library of photographs saved as JPEG, you can convert JPG to WebP to shed a meaningful share of their file size while keeping the same visual quality, which speeds up your site and reduces bandwidth. For graphics, screenshots, and images with transparency currently saved as PNG, you can convert PNG to WebP to get the same transparency and lossless quality in a substantially smaller file. Because every modern browser supports WebP, these converted images display correctly for nearly all of your visitors, with the smaller size as a pure bonus.

Handling Batches and Other Formats

Often you're not dealing with a single WebP file but a whole folder of mixed images you want to standardize, whether that's converting a batch of downloaded WebP files to JPG for a document, or turning a set of JPGs and PNGs into WebP for a website. A general-purpose image converter lets you handle these conversions in one place, moving between WebP, JPG, PNG, and other formats as needed without installing any software.

A practical tip applies in both directions: convert once from the best-quality source you have, rather than repeatedly re-saving an image. Each lossy conversion discards a little detail, so going straight from your original to the format you need, in a single step, keeps the picture as clean as possible.

Should You Worry About WebP at All?

For most people, WebP is a positive development that occasionally causes a minor inconvenience. On the viewing side, it means faster websites and less data used, which benefits everyone. The only friction is the occasional saved file that older software or a strict upload form won't accept, and that's a two-second fix with a converter.

If you frequently save images from the web and want to avoid the format entirely, some browser extensions can automatically save images as JPG or PNG instead of WebP. But for the vast majority of situations, it's simpler to save the WebP as-is and convert it only when a specific program or website demands a different format. WebP is here to stay, supported across every major browser and operating system, so treating it as a normal, capable image format (rather than an obstacle) is the right mindset.

Final Thoughts

A WEBP file is a modern, efficient image format from Google that combines JPEG's small size, PNG's transparency, and GIF's animation into one, which is why so much of the web now uses it. Opening one is usually as easy as dragging it into a browser, and current versions of Windows, macOS, Android, iOS, and the major image editors all support it directly. When you meet older software or an upload form that doesn't, converting to JPG covers almost every case, converting to PNG preserves transparency, and converting your own images toward WebP makes your website faster. Understand those few options and WebP shifts from a puzzling download into exactly what it was meant to be: a smarter, lighter way to handle images.