HEIC Fox

Home › What Is WebP?

What Is WebP — and How to Convert It to JPG

Why every image you save from the internet is suddenly a .webp file, what that means, and what to do when nothing will open it.

Where WebP came from

WebP is an image format developed by Google. It was introduced in 2010 as a way to make web pages faster: a WebP file is typically 25–35% smaller than a JPG at the same visible quality, and it also supports transparency (like PNG) and animation (like GIF). Google built it on the same compression technology behind the VP8 video codec, which is why it achieves those savings without a dramatic quality penalty.

For website owners, switching to WebP is one of the easiest ways to improve page load speed and Core Web Vitals scores. That's why Google Images, news sites, e-commerce stores, and most content platforms now serve WebP by default to any browser that supports it — and every major browser has supported it since around 2020. The format is documented by Google at developers.google.com/speed/webp.

Why you keep ending up with .webp files

When you right-click an image on a website and choose "Save image as…", your browser saves whatever format the site actually served — which is usually WebP. The browser displays it perfectly because it decodes WebP natively, but the file you saved to your desktop carries the .webp extension and the WebP encoding.

That becomes a problem the moment you try to open the saved file in an older application, attach it to an email, upload it to a form, or share it with someone whose device or software predates broad WebP support. You get a missing-thumbnail icon, an error message, or a flat rejection.

Why renaming the file does not work

A file extension is just a label — it tells the operating system what program to try first. The actual image data inside the file is encoded in a specific binary format, and that encoding does not change when you rename it.

A WebP file stores pixels using a compression algorithm completely different from JPG. If you rename photo.webp to photo.jpg, a program that opens JPG files will try to parse the WebP bytes as JPG data. It will either show a blank or corrupt image, or refuse to open the file entirely. To get a genuine JPG, the image needs to be decoded from WebP and re-encoded as JPG — that is what a converter does.

Quality and size trade-offs

The core trade-off with WebP is the same one that runs through all compressed image formats: smaller file size versus visual quality. WebP handles this better than JPG in most cases — at equivalent file sizes, WebP images typically look sharper, with fewer of the "blocky" artefacts that JPG produces around edges and gradients.

When you convert WebP to JPG, you lose that compression efficiency. The resulting JPG will be larger, and because JPG is lossy, re-encoding always introduces a small additional quality step. For most photographs at a reasonable quality setting this difference is invisible, but it is worth knowing: if you convert the same image multiple times through different formats, quality degradation compounds.

The practical implication: convert WebP to JPG when you need compatibility with software or services that do not accept WebP. Keep the original WebP if you plan to edit and re-export, so you are always working from the best available source.

How to convert WebP to JPG (in your browser, no install)

HEIC Fox accepts WebP files as input alongside HEIC, AVIF, and other formats. To convert:

  1. Go to the HEIC Fox converter.
  2. Drag your .webp file onto the drop zone, or click to browse and select it.
  3. Make sure "JPG" is selected as the output format.
  4. Click Download on the converted file, or use "Download all (.zip)" for a batch.

The conversion runs entirely in your browser — nothing is uploaded to any server. If you have dozens of WebP files to convert at once, drop them all in together and download the results as a single ZIP.

If you need to keep a transparent background (for a logo or UI asset), choose PNG as the output instead. JPG does not support transparency; transparent areas will be filled with white.

WebP compatibility in 2026

All current versions of Chrome, Firefox, Safari, and Edge support WebP. On Windows, Paint supports WebP natively and the Photos app added WebP support in a 2023 update (Windows 11, build 2023.11050.5007.0 or later). macOS Ventura and later handle WebP in Preview natively. Most modern Android and iOS devices open WebP without any extra software.

Where you still encounter problems: older versions of Microsoft Office (Word, PowerPoint), some legacy photo-editing software, web upload forms that validate by extension or MIME type, and devices running operating systems that have not been updated in several years. Converting to JPG or PNG remains the most reliable fix for any of those situations.

Frequently asked questions

What is WebP?

WebP is a modern image format developed by Google, released in 2010. It uses advanced compression to produce smaller files than JPG or PNG at comparable visual quality, which is why websites serve it to speed up page loads.

Why can't I open a WebP file in some programs?

Older versions of Windows, Microsoft Office, some photo editors, and many upload forms were built before WebP was widely adopted. They expect JPG or PNG and reject anything else. Converting the file to JPG or PNG fixes the problem.

Can I just rename a .webp file to .jpg to open it?

No. Renaming changes the file extension — the label — but not the actual data inside the file. The bytes that make up a WebP image are encoded differently from JPG. A program that tries to read it as a JPG will still fail or show a corrupt image. You need to re-encode the image, which is what a converter does.

How do I convert WebP to JPG for free?

Drop the file into HEIC Fox. The converter accepts WebP and re-encodes it as a standard JPG entirely in your browser — no upload, no account, no size limit. The whole thing takes a second or two per file.

Does converting WebP to JPG reduce quality?

JPG is a lossy format, so re-encoding from WebP to JPG does introduce a tiny quality step. At the default quality setting (around 82%) the difference is invisible to the eye for photographs. Use a higher quality setting if you need to minimize any loss.