JPG → WebP
Converting locally: nothing is uploaded
Same photo, markedly less weight: free, and finished on your machine.
Drop your JPGs in the drum
or , and nothing leaves this tab
READS JPG · PNG · WEBP · GIF · BMP · SVG · AVIF
CYCLE →
WASH TEMP
OUT OF ORDER — JAM REPORT
The JPG → WebP cycle
The standard swap before publishing to the web: identical-looking photographs at a fraction of the weight, accepted by every browser released in the last decade.
WebP keeps transparency; JPG had none to give. Expect the folded copy noticeably lighter than the load. Either way, re-encoding through the canvas collects EXIF like lint: camera model, GPS coordinates and timestamps are stripped from the folded copy.
This is the conversion most people make for page speed. Smaller images improve load time on mobile connections, and browsers weigh load time in Core Web Vitals, which feeds into search ranking. Most sites see the largest gain on hero images and galleries.
WebP is itself lossy here, so you are compressing an already-compressed picture. At the Warm default the extra loss is rarely visible, but if you still have the original camera file, convert from that instead of from a re-saved JPG.
Need the other direction? WebP → JPG · Other routes into PNG → WebP, GIF → WebP, BMP → WebP.
Questions at the counter
How much smaller is WebP than JPG?
Typically 25-35% at matching visual quality. The exact figure depends on the image: busy textures shrink less, clean backgrounds shrink more. The ticket shows your actual before-and-after weight.
Can every browser open WebP?
Every current one can: Chrome, Edge, Firefox and Safari have all shipped support since 2020. Only very old software (legacy image viewers, some print-shop RIPs) still balks.
Which temperature should I wash at?
Warm (our default, roughly quality 85) suits most photographs. Hot for hero images you will crop or zoom; Cold when page weight matters more than fidelity, such as thumbnail grids.
Is the conversion really private?
Yes, architecturally. This page is static files; there is no server to receive an upload. Your JPG is decoded and re-encoded inside this tab by your own machine, and you can watch the absence of network traffic in your browser’s developer tools.
Before you convert
A converter can change the container. It cannot tell you whether that was the right call for this particular image. These cover the decision itself. They were written from building the encoders that run on this page, and are checkable against your own files.