JPG to WebP Converter: Free, In Your Browser, No Uploads

Going from JPG to WebP is the fastest way to make your site lighter without reshooting a single photo. This WebP converter runs in your browser: you drop your images, pick a quality and walk away with WebP files without uploading anything anywhere. It works just as well to convert PNG to WebP, transparency included.

How to convert JPG to WebP, step by step

1. Drop your JPG or PNG files

   Done

   One or a whole batch. You can also paste a screenshot with Ctrl+V. No image handy? Tap the page and a sample image starts converting.

2. Set the quality

   Done

   For photos, 75 to 85. Below 70 you'll start seeing blotches in gradients and skin tones.

3. Cap the width if the photo is huge

   Done

   If your site displays photos at 1,200 px, there's no point uploading a 4,000 px one. Type a max width and the image shrinks without stretching.

4. Download and swap

   Done

   Download the WebP files and upload them to your site instead of the JPGs. WordPress has accepted WebP since version 5.8.

How much smaller is WebP? Our test

We ran the converter in Chrome in October 2026, with real files and the original width:

Image	Original	WebP at 85	WebP at 75
Photo, 2,000 × 1,116 px	JPG, 262 KB	81 KB (69% smaller)	39 KB (85% smaller)
Photo, 1,500 × 1,000 px	JPG, 197 KB	134 KB (32% smaller)	85 KB (57% smaller)
Screenshot	PNG, 147 KB	67 KB (55% smaller)
Logo with transparent background	PNG, 38 KB	17 KB (55% smaller)

The second photo was already well compressed and still lost a third of its weight. According to Google, which created the format, lossy WebP files are 25 to 34% smaller than comparable JPEGs. Our numbers land in that range or beat it, because plenty of JPGs are saved at a higher quality than they need.

WebP vs JPG: which one should you use?

For a website, WebP wins; for everything else, JPG. The fine print:

	JPG	WebP
File size	The baseline	25 to 34% smaller at comparable quality, according to Google
Transparency	No	Yes
Animation	No	Yes
Support	Every browser and app	Just over 97% of users, according to Can I use
Email, print shops, older apps	No problems	Sometimes fails

The last two rows are the real disadvantages of WebP: older software and some email clients still can’t open it. Our rule: upload WebP to your site, store and blog, and keep the original JPG as your master file for sending, printing or editing. That way you never depend on a single format.

Convert PNG to WebP and keep the transparency

JPG has no transparency; WebP does. That's why you should convert image to WebP for logos, icons and graphics with a transparent background: they end up lighter than the PNG and the background stays clean. If the PNG has small text, push the quality to 90 or more so the letters stay crisp.

Why you should convert to WebP

Images are usually the heaviest part of a page. Fewer KB means the main content shows up sooner on phones, and that's exactly what Google measures with Core Web Vitals. Where you'll notice it:

• Online stores: a catalog with 40 product photos can drop several megabytes.
• Blogs and publishers: the featured image is often the largest element on screen.
• Landing pages: every second of load time counts when you pay for every click.

Building your site from scratch? See how to build a website with AI and upload your images as WebP from day one.

What is WebP and which browsers support it?

WebP is an image format from Google that saves with or without quality loss. According to Google, lossy WebP is 25 to 34% smaller than a comparable JPEG, and lossless WebP is 26% smaller than PNG. It handles transparency and animation too.

According to Can I use, Chrome has supported it since version 32, Firefox since 65, Edge since 18 and Safari since 16. Global support lands at just over 97%. Where it still trips: older editing software, some email clients and print shops.

One detail about this tool: create WebP files in Chrome, Edge or Firefox. If your browser can’t, the tool tells you it saved a PNG instead.

Frequently asked questions about converting JPG to WebP

01

How do I convert JPG to WebP?

Drop your JPG files into the tool above, keep WebP as the output format and set the quality: 75 to 85 works well for photos. Next to each image you'll see the old size, the new size and the percentage saved. Then download them one by one or all at once. There's nothing to install and nothing gets uploaded: the conversion happens in your browser.

02

Does converting JPEG to WebP lose quality?

A little, because lossy WebP compresses the photo again. At quality 80 or higher it's hard to spot, even zoomed in. What you shouldn't do is convert the same image over and over, since each pass adds more loss. Keep the original JPG or PNG as your master file and export a fresh WebP from it whenever you need one.

03

Does WebP keep PNG transparency?

Yes. WebP supports an alpha channel in both lossy and lossless mode, so when you convert PNG to WebP, transparent backgrounds stay transparent. We tested it with the Notablia logo: a 38 KB transparent PNG came out as a 17 KB WebP with a clean background. It's the easiest way to slim down logos and graphics for your site.

04

Where should you not use WebP?

Anything you're going to email or print. Some email clients, older editing apps, print shops and upload forms still won't take it. For your website, blog or online store, go for it: every current browser reads WebP. For everything else, keep a JPG or PNG copy around just in case.

05

What is a WebP file?

It's an image format Google created to make web pages lighter. It compresses with or without loss, supports transparency and animation, and works in Chrome, Edge, Firefox and Safari. That's why so many stores and publishers already serve their photos as WebP, even when you expected a JPG after saving one.