RunToolRunJPG to WebP
Convert JPG files to WebP format.
How to Convert JPG to WebP
Select your JPG files
Click the upload area or drop one or more .jpg / .jpeg images — batch conversion is supported.
In-browser WebP encoding
Each photo is re-encoded as WebP on your device at high visual quality. Nothing is uploaded.
Download the WebP files
Save the optimized images — lighter files, ideal for websites and apps.
Real saving, at the cost of one more generation
WebP typically stores the same visual quality as JPEG in 25–35 percent less space, which is a substantial saving on a page carrying dozens of images. Converting an existing JPEG captures most of that benefit and is one of the cheapest page-speed improvements available.
The caveat is that the JPEG has already been compressed once. Decoding and re-encoding as WebP is a second generation of lossy compression, and the encoder spends bits faithfully reproducing the JPEG's existing artefacts because it cannot tell them apart from real detail. At a high quality setting this is invisible; at an aggressive one it compounds.
Convert from the best source you have
Because of that compounding, converting from an original camera file or a lossless export produces a better and smaller WebP than converting from a JPEG that has already been through a website's own processing. Where the untouched original exists, use it.
Where it does not — which is most of the time — converting the JPEG is still worthwhile. A single extra generation at high quality costs very little, and the bandwidth saving is immediate and measurable.
What WebP adds beyond size
WebP supports transparency, which JPEG does not, so a converted image can later be composited without a white box around it. It also supports animation, and it has a lossless mode for content that needs exact pixels — one format covering the roles that previously required three.
None of that changes a converted photograph, which has no transparency to gain. The point is that adopting WebP simplifies everything downstream: one format for photographs, graphics and animation, rather than deciding between JPEG, PNG and GIF for each asset.
Where it still does not belong
Email clients remain unreliable with WebP, so images embedded in newsletters should stay JPEG. Many upload forms, print services and older desktop applications reject it too. And a file you are sending to a person rather than serving on a page should be the format they can definitely open.
Conversion runs entirely in your browser, so nothing is uploaded. That makes it practical to convert a folder of product photographs or client images without handing any of them to a third-party service first.
Measuring whether it was worth it
Compare the two files and the two images side by side before adopting this across a site. A saving under about fifteen percent on a photograph usually means the source JPEG was already efficiently compressed, and the extra generation is not buying much. A saving of forty percent or more is common on images exported straight from a camera or a design tool, and there the case is obvious.
On a page carrying many images the aggregate matters more than any single file. Twenty photographs each a third smaller is a materially faster page, and page speed is one of the few technical factors that affects both ranking and whether visitors stay long enough to use what you built.