JPEG to WebP Converter
Re-encode the JPEG photos on your site or shop as WebP so each page downloads fewer bytes. The quality starts at 80, a setting most photos survive without visible change.
Image Converter
or drop JPG, JPEG, JPE … files here ·
Max 95 MB per file· Up to 20 files· Deleted after 30 minutes
Files are processed on our servers and deleted after 30 minutes.
85 keeps photos visually identical to the original. Lower it only when you need a smaller file.
JPG, BMP and EPS have no transparency. Transparent pixels are filled with this color.
Hex color used behind transparent pixels, e.g. #FFFFFF.
This format holds a single image. Choose GIF or WebP output if you want to keep the animation.
A multi-size icon contains several resolutions in one file; browsers and operating systems pick the one they need.
Keep the original dimensions, or enter one side and the aspect ratio is kept.
Pixels for the side you chose above.
Percentage of the original dimensions.
sRGB is right for screens and the web. Keep the original for print workflows; grayscale discards color.
Metadata only, 0 keeps the original value. Printers and some portals read this number; it does not change pixel dimensions.
How to use this tool
- 1
Upload the JPEG photos
Add up to 20 .jpeg or .jpg files at once, 95 MB each. Exporting straight from your CMS media folder or camera is fine.
- 2
Set quality, then size
Quality starts at 80. Under Advanced settings, set Resize output image to the widest size your layout shows, for example 1600 px, so you are not shipping pixels nobody sees.
- 3
Press Convert to WebP
Download the WebP files one by one or as a ZIP, then upload them to your site in place of the JPEGs.
Convert JPEG to WebP when the image will be shown on a web page you control: product photos, blog headers, portfolio galleries. Keep the JPEG for anything that will be printed, edited or emailed.
Why convert JPEG to WebP on a website
Google announced WebP in 2010, built on the still-image coding of its VP8 video codec. The point was a smaller file for the same picture, and for photos that still holds: the format's prediction step and entropy coder are newer than JPEG's 1992 design. Photos usually account for most of the bytes on a page, so cutting them is often the largest single speed gain a site owner can make without touching code.
The compatibility argument ended in 2020, when Safari 14 added WebP on iOS 14 and macOS Big Sur, the last major browser to do so. WordPress accepts WebP uploads since version 5.8 (2021), and Shopify takes them in its product media too. Speed tools such as PageSpeed Insights point at oversized JPEGs when they suggest serving images in a modern format; WebP is the conversion that answers that with the fewest side effects.
Best WebP quality setting for converted JPEG photos
- 50
Thumbnails and background images only; soft edges appear
- 75
Default of Google's cwebp encoder
- 80
Preset here; product and blog photos
- 92
Portfolio work where texture matters; file grows quickly
JPG
JPEG image
JPEG (or JPG) is the most widely used photo format, standardised by the Joint Photographic Experts Group in 1992. It uses lossy compression that discards fine detail the eye is unlikely to notice, which keeps photos small enough for the web, email and phone storage. It handles smooth gradients and natural scenes well, but sharp text, line art and flat colours pick up visible blocky or fuzzy artefacts. JPEG has no transparency and no animation, and every re-save loses a little more quality. Every browser, phone, camera and image editor can open it.
- Compression
- Lossy
- Transparency
- No
- Animation
- No
- Introduced
- 1992 · Joint Photographic Experts Group
WEBP
WebP image
WebP is an image format released by Google in 2010 to make web pages load faster. It supports both lossy and lossless compression, alpha transparency and animation in a single format. Lossy WebP files are typically 25–35% smaller than JPEGs of similar visual quality, and lossless WebP is usually smaller than PNG. Every current browser supports it, but some older desktop software, print services and upload forms still reject it. Windows, macOS and most modern image editors can open WebP files.
- Compression
- Lossy or lossless
- Transparency
- Yes
- Animation
- Yes
- Introduced
- 2010 · Google
Site owners convert JPEG to WebP to make pages load faster and pass image-size audits; the photo is meant to be viewed in a browser, not edited again.
What changes inside the photo when it becomes WebP
Lossy WebP always stores color at half the resolution of brightness (4:2:0 sampling). Camera photos already use that layout, so nothing visible changes, but saturated red or blue text on a flat background can look slightly softer than in a JPEG saved with full color resolution. Raise Quality for those, or use PNG.
Metadata is stripped by default, which is usually what you want on the web: GPS coordinates and camera serial numbers have no business on a public product page. Untick Strip metadata if a photo agency or copyright notice requires the fields to stay. The color profile is kept unless you change Keep color profile. To compare the newer options, read AVIF, HEIC and WebP explained before you pick a format for a whole site.
| Do | Don't |
|---|---|
| Resize to the largest width your layout displays before or during conversion. | Tick Lossless for photos; the WebP will be bigger than the JPEG. |
| Keep the original JPEGs in a separate folder as the master copies. | Convert a WebP back to JPEG and then to WebP again; each trip adds loss. |
| Spot-check one photo with fine texture, such as fabric or foliage, at 100% zoom. | Send WebP files to a print shop or a job portal that asks for JPEG. |
| Run a page through a speed test before and after to confirm the gain. | Push quality to 100 expecting a sharper result than the source JPEG. |
JPEG to WebP: what site owners ask
How much smaller is a WebP than the JPEG it came from?
Google's own comparison study reported lossy WebP files 25–34% smaller than JPEG at matching quality. Converting an existing JPEG usually lands in that range or a little below, because the JPEG artifacts have to be encoded too. Photos that were saved at JPEG quality 95 or higher shrink the most.
Should I tick Lossless when converting a JPEG to WebP?
Almost never. Lossless WebP stores every pixel of the decoded JPEG, including its compression noise, and the file usually comes out larger than the JPEG you started with. Lossless pays off for screenshots and graphics, not for camera photos.
Is JPEG to WebP a second round of lossy compression?
Yes. The JPEG is decoded and compressed again with a different method, so a little more detail is discarded. At quality 80 to 85 that loss is hard to see; repeating the trip several times, or going WebP to JPEG and back, is what makes it visible.
What is the largest photo WebP can hold?
16,383 × 16,383 pixels. JPEG allows up to 65,535 per side, so a stitched panorama or a very high-resolution scan may have to be resized before it fits. Set Resize output image to a longest side below the limit.
Should I delete the original JPEGs afterwards?
Keep them. They are your source if you later need a print, a different crop or a newer format such as AVIF, and converting from the original avoids stacking compression on top of compression.
Which apps still struggle to open WebP?
Browsers are fine; the gaps are older desktop software and some upload forms. If someone needs to edit or submit the file, send the JPEG, or convert back with WebP to JPEG.