Convert JPG to WebP
The conversion with the clearest payoff on this site. At the same quality setting, WebP produced files about a third the size of JPG in our tests — which is why the whole web moved to it.
Drag & drop JPG files here
or — you can paste too
HEIC, HEIF, JPG, PNG, WebP, GIF, BMP · up to 40 images
PNG is lossless — quality affects JPG and WebP only.
The size difference is not marginal
Most format conversions trade one inconvenience for another. This one is close to a free win. Measured with this tool on a 3024×4032 photograph:
| Quality | JPG | WebP | Saving |
|---|---|---|---|
| 30 | 133 KB | 78 KB | 41% |
| 60 | 189 KB | 96 KB | 49% |
| 80 | 337 KB | 121 KB | 64% |
| 90 | 699 KB | 241 KB | 66% |
Notice that the advantage grows as quality rises. At the settings you would actually use for real images — 80 and above — WebP is roughly a third the size. For a page carrying twenty photographs, that is the difference between a fast site and a slow one.
One genuine trap: do not use quality 100
At quality 100 our test photo came out at 4,433 KB as WebP against 2,602 KB as JPG — WebP became the larger file. At the top of its range the encoder shifts toward near-lossless behaviour and the efficiency advantage inverts entirely.
There is no reason to go there. Quality 80 to 90 is where WebP does its best work. The slider on this page defaults to 80 deliberately.
Who this is actually for
Two groups, with different reasons:
- Anyone running a website. Image weight dominates page load on most sites, and Core Web Vitals — which feed into Google rankings — are heavily influenced by how fast your largest image arrives. Converting a photo library to WebP is one of the highest-leverage performance changes available.
- Anyone short on storage. The same efficiency that helps websites helps a full hard drive or a phone backup. Cutting a photo archive by two thirds with no visible difference is a real saving.
Compatibility, honestly assessed
For web use, WebP is settled. Every current browser supports it — Chrome, Firefox, Edge and Safari have all shipped support for years, including on iOS. You can serve WebP directly without a fallback and the overwhelming majority of visitors will be fine.
Outside browsers it is patchier. Older desktop software may not open a .webp file, and some upload forms, print services and marketplace listing tools still reject it. So WebP is an excellent choice for images going onto the web, and a poor choice for images going to a print shop or an old internal system.
If you need to go back, the WebP to JPG converter handles the return trip.
Transparency and metadata
Unlike JPG, WebP supports an alpha channel, so transparency is preserved when the source has any. This makes WebP the best target when you want a PNG's transparency at a fraction of the size — our transparent test logo was 26 KB as PNG and 9 KB as WebP.
Exif metadata is not written into WebP output here. The metadata preservation feature targets JPG, where Exif support is universal and reliably read. If capture dates matter for your archive, keep the JPG originals alongside the WebP copies.
Related conversions
Common questions
How much smaller is WebP than JPG?
In our measurements, about 64% smaller at quality 80 and 66% at quality 90 — a 337 KB JPG became a 121 KB WebP with no visible difference. The advantage is largest at the higher quality settings you would actually use for real photographs.
Is WebP supported everywhere?
In browsers, yes — Chrome, Firefox, Edge and Safari have all supported it for years, including on iOS, so you can serve it on a website without a fallback. Outside browsers it is less reliable: some older desktop software, print services and upload forms still reject it.
Should I use quality 100 for the best result?
No. At quality 100 the WebP encoder shifts toward near-lossless mode and files become enormous — in our test, 4,433 KB versus 2,602 KB for the equivalent JPG. Stay between 80 and 90, where WebP is at its most efficient.
Does WebP support transparency?
Yes, and it is preserved during conversion. WebP is usually the best destination for transparent images, since our transparent test logo was 26 KB as PNG and only 9 KB as WebP.
Will the Exif data carry over to the WebP?
No. Metadata preservation on this site applies to JPG output only, where Exif support is universal. Keep your JPG originals if capture dates and camera information matter to you.
Is converting JPG to WebP lossy?
Yes — both are lossy formats, so the image is re-compressed. At quality 80 the result is visually indistinguishable from the source at normal viewing size, but avoid repeatedly converting the same file back and forth.