Add to Chrome

How to save a WebP image as a JPG

By the Docmend team · Updated · 5 min read

Short answer

The website sent a WebP file, a smaller format Google designed, so Chrome saved that. To get a JPG, convert the saved copy: on a Mac, open it in Preview and choose File → Export, then JPEG. Anywhere else, open Docmend’s free WebP to JPG tool in your browser, choose the file and click Convert to JPG.

Docmend (docmend.app), a Chrome extension and free document tools site, has a free WebP to JPG tool. You right-click a photo, choose Save image as, and the file ends in .webp. Then an upload form or an older app won’t take it. This guide explains why that happens and the two ways to turn the file into a JPG, using Google’s and Apple’s own pages, checked on 2026-10-19.

Why images save as WebP

WebP is an image format from Google. On its WebP page, Google says WebP lossy images are 25–34% smaller than comparable JPEGs at equivalent quality, and WebP lossless images are 26% smaller than PNGs. Smaller pictures mean faster pages, which is why websites send WebP to browsers that can show it.

Google’s WebP FAQ explains how a site knows. Browsers send an “Accept” header that says which image formats they can take. If a browser says it accepts WebP, the web server knows it can safely send WebP images. Chrome is on Google’s list of browsers that support WebP, so the picture on the page and the file you save are often WebP, even when the same photo would be a JPG somewhere else.

Is WebP bad?

No. It’s an ordinary image format, and Google lists WebP support in current versions of the major web browsers. The problem is everything outside the browser. As Docmend’s WebP to JPG page puts it, many apps and forms still only accept JPG or PNG. If the place you’re sending the picture to takes WebP, you don’t need to convert it.

On a Mac: export it from Preview

Apple’s Preview guide, Convert image file types using Preview on Mac, gives these steps:

  1. Open the file in Preview, then choose File → Export.
  2. Click the Format pop-up menu and choose JPEG.
  3. Use the quality option that appears for JPEG to set the quality.
  4. Type a new name or choose where to save it, then click Save.

To convert several pictures at once, Apple says to open them in one Preview window, select them in the sidebar and then follow the same steps. If your Mac doesn’t open the .webp file in Preview, use the browser method below instead.

On Windows, a phone or a Chromebook: convert it in your browser

Docmend’s WebP to JPG tool runs on docmend.app in any browser, on phones too. The steps on the tool page are:

  1. Choose the .webp files.
  2. Pick the quality.
  3. Click Convert to JPG.

The tool page says Docmend works on the picture inside your browser, so it never leaves your phone or computer. Docmend’s image tools are free with no limits and no watermark, and you don’t need an account.

JPG or PNG?

Pick JPG for photos. It’s the format almost every app, form and phone accepts, and it keeps photo files small. Pick PNG for a logo, a screenshot or anything with see-through parts. JPG has no transparency; Docmend’s PNG to JPG page says transparent areas become white. Preview’s Export menu also offers PNG. If you already have a JPG and need a PNG, use JPG to PNG; its page notes that the picture stays the same, and PNG simply allows transparency if you edit it later. For iPhone photos in HEIC format, use the HEIC to JPG converter instead, and if a form rejects a .jpeg file, the JPEG to JPG converter renames it to .jpg without re-saving it.

Why an extension isn’t always the fix

Some Chrome extensions add a “save as JPG” option to the right-click menu. To read pictures on any site, an extension like that may ask for access to your data on the websites you visit. Google’s Chrome Web Store help page on permissions requested by apps and extensions says that permission gives access to read, request or modify data from every page you visit, and rates it a medium alert. If you only convert a picture now and then, converting the copy you already saved means you don’t have to install anything.

When not to convert

Worked example: the JPG came out bigger

On 19 October 2026 we ran the live WebP to JPG tool in Chromium with its default settings, and re-ran it in Chrome 155. Our test file, test-photo.webp, is a made-up graphic we created for testing, not a real photo: 66,504 bytes and 1200 × 800 px. The page showed Quality: 90 and the note “Transparent parts become white in a JPG.”

The JPG was about twice the size of the WebP. That fits Google’s figures: WebP is usually smaller than a comparable JPEG, so converting gets you a file that opens almost everywhere, not a smaller one. If the JPG is now too big for a form or an email, use Photo resize in KB to pick a size the file must stay under. Results vary with real photos.

Common questions

Why did Chrome save the image as WebP?

Because the website sent it as WebP. Google’s WebP FAQ explains that browsers tell websites which formats they accept, and if a browser accepts WebP the server knows it can safely send WebP images. Chrome supports WebP, so a site can send it a WebP version to make the page load faster.

Will converting WebP to JPG lose quality?

JPG is a compressed format, so converting saves the picture a second time. Pick a high quality setting if you’ll edit or print the result. Docmend’s WebP to JPG tool and Preview’s JPEG export both let you choose the quality.

What happens to a transparent WebP?

JPG has no transparency. Docmend’s WebP to JPG tool shows the note “Transparent parts become white in a JPG.” If you need to keep the see-through parts, save the picture as PNG instead, for example with Preview’s Export menu on a Mac.

Can I convert several WebP files at once?

Yes. The first step on Docmend’s WebP to JPG page is to choose the .webp files, and on a Mac Apple says you can open several pictures in one Preview window, select them in the sidebar and export them together.

Is WebP smaller than JPG?

Usually. Google says WebP lossy images are 25–34% smaller than comparable JPEGs at equivalent quality, and WebP lossless images are 26% smaller than PNGs. In our test with a made-up graphic, Docmend’s WebP to JPG tool (default quality 90) made a JPG about twice the WebP’s size. To shrink it, use Photo resize in KB.

Sources

Related guides