A free converter that runs in your browser
Moving photos to WebP is one of the quickest wins for a faster website. This free JPG to WebP converter runs in your browser, so you can convert JPG to WebP online without uploading anything, without an account and with no watermark on the result.
The WebP format was designed by Google for the web. What is WebP in practice? A format that supports lossy and lossless compression plus transparency, shown by every current browser. Saving a JPG photo to WebP usually gives you a smaller image that looks the same on screen.
No sign-up, nothing to install
There is no daily limit wall and nothing to download. Open the page, add files and save the results. Your settings are remembered for the next visit, which helps when you convert JPG images to WebP every week for a blog or shop.
Private by design
The work happens on your own device, so your pictures never leave your phone or computer. That matters for client work, ID scans or unreleased product photos, and makes this a secure choice on shared office networks.
How JPG and WebP differ
Both formats show the same pixels, but they pack them differently. The table sums up the JPG vs WebP trade-offs so you know what to expect before you convert.
| JPG | WebP | |
|---|---|---|
| Compression | Lossy | Lossy or lossless, your choice |
| Transparency | No | Yes |
| Best for | Photos everywhere, old software | Web pages, apps, online stores |
| Opens in | Everything | All modern browsers, Windows 11 Photos, macOS Preview |
| Typical size | Baseline | Usually smaller at the same visual quality |
Does WebP lose quality?
Lossy WebP throws away detail your eye is unlikely to notice, the same idea as JPG. Lossless WebP keeps every pixel exactly. For a photo that is already a JPG, a quality of 80 to 90 normally looks identical while the file gets lighter. That is the usual reason for the WebP vs JPG size gap.
Which browsers show WebP?
WebP browser support is broad: Chrome, Edge, Firefox, Safari, Opera and Samsung Internet all display the format today. Older desktop programs and some email clients may still not open it, so keep your originals if you share files outside the web.
Keeping quality while you convert
Good results depend on picking the right mode for the picture. These tips help you get JPG to WebP without losing quality you care about, whether the job is a high-quality portfolio or the smallest possible file for a banner.
Pick a quality between 80 and 90
For lossy output, move the quality slider to about 85 for most camera photos. Zoom up to 16× on the result and hold the B key to compare skin, sky and fine text with the original. Drop the value only if the file is still too heavy.
What about lossless?
Lossless keeps the decoded JPG pixels exactly, but the file is often larger than the JPG you started with. Use it only when a later edit must not add another round of compression.
Camera data
A web page does not need the camera data, and removing it keeps location out of public images. The option to keep date & camera applies to JPG output, so keeping EXIF is not offered for WebP; your files come out clean.
Set a longest-side limit
A 4000 px image is too big for a blog column. Set the longest side to 1920 or 1200 px while you convert and the file gets much smaller. For exact pixel sizes or social presets, use the image resizer first.
Check the size after converting
Every result shows its size before and after, plus totals for the batch. If one file came out larger, it was probably already well optimised; keep the original for that one.
When to switch your images to WebP
Switch to WebP whenever the image lives on a web page or in an app. Common cases:
- Blogs and WordPress sites: upload JPG to WebP for WordPress media when your theme or plugin does not create WebP copies for you. The same applies to other blog platforms.
- Online shops: product photos load faster on mobile data, and a Shopify or other ecommerce catalogue keeps its quality while trimming weight.
- Page speed reports: the audit hint to serve images in next-gen formats is fixed by moving to a next-gen image format such as WebP or AVIF.
- Camera photos: a gallery page full of camera photos loads sooner with no visible change.
Faster pages
Images are usually the heaviest part of a page. When you use JPG to WebP for website images, download time drops and Core Web Vitals such as Largest Contentful Paint can improve, which is the main JPG to WebP page speed benefit. Pair the conversion with the image compressor if you want the smallest possible file.
Why convert at all?
Why bother when the JPG already works? Because a smaller file helps your Core Web Vitals scores and saves your visitors' data. If the WebP is not smaller for a particular image, simply keep the JPG.
Getting under a size cap in KB
Some portals and CMS fields cap uploads at 100 KB or 200 KB. JPG to WebP in KB is often enough to get under the cap. If you need an exact target, the compressor's Exact size mode aims for 20, 50, 100, 200 or 500 KB or any number you type. Indian exam forms such as SSC or IBPS usually ask for JPG, not WebP, so do not send WebP there.
Converting a whole folder at once
You can convert multiple JPG to WebP at once, so the page works as a bulk converter. Add up to 30 images of 25 MB each, and each file appears as soon as it finishes.
- Select all files in the picker, drag a folder's contents in, or paste with Ctrl+V.
- Choose WebP, set quality or lossless, and optionally a longest-side limit.
- Watch the list fill up with before and after sizes, and retry any file that failed.
- Press Download all to save a single ZIP.
Tips for big batches
Rename files before a bulk JPG to WebP run if your website needs clean names, because each output keeps the original name with a .webp extension. Files are detected by their bytes, not the extension, so a mislabelled JPG image to WebP still converts correctly.
On iPhone, Android, Windows and Mac
The converter is a web page, so the steps are the same on every device.
iPhone and Android
Open the page in Safari or Chrome, tap to add photos, and the options open as a bottom sheet. Use Share to save or send the result. It is a handy mobile option when you manage a shop from your phone, and you need no separate app. JPG to WebP on iPhone works in Safari, and Android works in Chrome.
Windows and Mac
On a PC or laptop, drag files from File Explorer or Finder. JPG to WebP on Windows 11 works in Chrome, Edge or Firefox, and Mac users can use Safari too. Windows 11 Photos and macOS Preview can then open the WebP files.
JPG to WebP not working? Try these fixes
Most problems have a quick fix. Work through these before you give up on the converter.
The file will not add
Check that the picture is under 25 MB and that the batch has no more than 30 files. The tool reads the bytes, so a wrong extension is fine, but a damaged download is not. Try saving the JPG picture to WebP again from its source, or re-export the JPG file to WebP from the original.
The result looks different
Colours can shift slightly between viewers. Hold B to compare with the original in the same window; if that looks the same, the change from JPG format to WebP is fine. To keep more quality, raise the quality slider in the settings.
It is slow on my phone
Everything runs in browser memory, so very large pictures take longer on older phones. Set a longest-side limit, or use a desktop or laptop. On a fast device the conversion is quick and easy.
Posting on social media? A resize for Instagram is more useful than converting for Instagram, which re-encodes uploads anyway.
Related converters and next steps
Need the opposite direction? Use WebP to JPG or WebP to PNG when an older program refuses WebP. For an even smaller file, try JPG to AVIF, and for any other pair open the image converter hub.
After converting, the Continue with button sends the result straight to another tool, for example cropping the image or adding a watermark. Want an image to WebP or photo to WebP route from other formats? The same WebP converter engine handles those in the hub. Files named .jpeg work the same way, so you can convert JPEG to WebP online, even JPEG to WebP without losing quality in lossless mode.