Convert JPG to WebP and cut the file size
WebP stores the same picture in noticeably less space than JPG, which is why most websites now serve it. Convert it on your own device and keep the original.
- File size
- Usually much smaller
- Quality
- Recompressed once
- Leaves your device
- Never
Which output should you pick?
Choose WebP when
- You are publishing the image on a website or in an app.
- The page loads slowly and the images are the reason.
- You want a transparent background as well as a smaller file.
Stay with JPG when
- You are sending the image to print or into an older editor.
- An upload form accepts only JPG or PNG.
- Something in your workflow refuses WebP outright.
How it works
Choose your JPG file
The image is opened locally in this tab, on your own device.
WebP is already selected
This page opens with WebP as the target, so no setting needs changing.
Set the quality
Around 80 is a good starting point for the web. Higher means a larger file.
The picture never leaves your device
Compressing or converting a photo usually means sending it to somebody else's computer and getting a new one back. Here the work happens in the page you are already looking at: your browser opens the file, the tool rewrites it, and the browser hands you the result.
- Opened from your disk by your browser — not sent anywhere first.
- Held in the tab while the tool works, then dropped.
- Saved to your device by your browser, not by a link to a server.
- Closing the tab clears the working copy completely.
- No account, so nothing is ever attached to an identity.
- No tracking of what you worked on or what was inside the file.
There is no queue and no waiting room. The picture is worked on in front of you and released the moment the tab closes. You can read more about how the conversion runs on your own device, or check our guide to verifying it in DevTools.
What people use it for
Making a format open everywhere
PNG, JPG and WebP each suit different jobs. Convert once and stop worrying about which app can read the file.
Shipping a lighter page
Hero images are usually the heaviest thing on a site. Getting them smaller before they reach your CMS is the fastest performance win available.
Sending photos on a weak signal
On hotel Wi-Fi or a poor mobile connection a full-resolution photo can sit at sending for minutes. A smaller copy goes through in seconds.
Preparing marketplace listings
Selling platforms set their own caps on size and dimensions. Get inside them before you start filling in the form.
Formats & limits
What this tool accepts, what it produces, and what it will never ask you for.
- Input
- JPG images
- Output
- PNG, JPG or WebP
- Maximum file size
- Set by your device, not by a plan
- Files per run
- Several at once
- Sign-up required
- None
- Watermark
- Never added
- Works offline
- Yes, once the page has loaded
- Supported browsers
- Any current Chrome, Edge, Firefox or Safari
When something goes wrong
Damaged files, and formats outside the list above, stop with a plain message rather than a spinner that never finishes. If a picture opens in your gallery it will normally open here.
The format is not supported. Convert it to PNG or JPG first, or try one of the other image tools.
Why not an upload site
An upload-based tool is a form that posts your picture to someone else's machine. Take that step out and a lot of small annoyances disappear with it.
A typical upload site
This tool
Questions
Why convert JPG to WebP?
Size. WebP typically stores the same picture in noticeably less space at the same visual quality, which makes pages load faster and costs less to serve. That is why most large websites have moved to it.
Will every browser show my WebP?
Every browser released in the last several years will. WebP is supported by Chrome, Edge, Firefox, Safari, Opera and the browsers on Android and iOS. Only very old software has trouble with it.
Does converting reduce quality?
It applies one round of compression, so there is some loss. At a quality setting of 80 or above it is rarely visible on screen, but the loss is real and adds up, so keep the original JPG if you plan to edit further.
Does WebP support transparency?
Yes, unlike JPG. If the image has transparent areas, they are preserved. If you start from a JPG there are none to begin with, since JPG cannot store transparency at all.
Can I convert several images at once?
One at a time on this page. Every conversion runs on your own device, so there is no upload queue and no daily cap — you can work through a folder as fast as you can add files.
Is there a file size limit?
No fixed limit is imposed by the tool. The practical ceiling is how much memory your device has free, because the whole job runs inside this browser tab.