Convert JPG to WebP
Convert JPG to WebP by dragging the JPG into the dropzone above and clicking Convert to WebP; that is the entire procedure. The encoding happens in a WebAssembly worker on your computer, never on a server.
Drop your JPG here
It becomes a WebP right in your browser, up to 100 MB
Your file never leaves your device
Why convert JPG to WebP?
This is the bread-and-butter optimization for sites still serving JPG photos: re-encoding to WebP typically trims 25-35% of the bytes at equivalent visual quality, purely from the more modern codec. Across a gallery or a product catalog that is real bandwidth and measurably faster loads. WebP also gives you one format that handles both your photos and your transparent graphics, simplifying build pipelines. With universal modern-browser support, the migration risk that kept people on JPG is gone for web use.
What is JPG?
JPG (or JPEG, for the Joint Photographic Experts Group that standardized it in 1992) is the most widely supported image format ever shipped. It uses lossy DCT compression tuned for photographs, which buys small files at the cost of discarding fine detail, and it has no transparency support. Practically everything that can open an image can open a JPG.
What is WebP?
WebP is an image format Google released in 2010, built on VP8 video coding. It offers both lossy and lossless modes, supports transparency in both, can hold animation, and typically lands 25-35% smaller than a comparable JPG. Every modern browser has rendered it since Safari 14 arrived in 2020, but plenty of desktop software, older CMS upload forms and printing services still refuse it.
Quality and what to expect
You are transcoding between two lossy codecs, so a generation of loss occurs: the WebP encoder works from the already-imperfect JPG pixels. At default quality the difference is rarely visible, but do not round-trip repeatedly between formats, and always keep originals. Size wins are content-dependent; a heavily compressed JPG may shrink only modestly because there is little redundancy left to remove. Camera metadata such as EXIF orientation tags is consumed during decode and not written into the WebP.
JPG to WebP FAQ
Will the WebP look worse than my JPG?
At the default quality used here, side-by-side differences are hard to find for normal photos. Technically some additional loss occurs, as in any lossy-to-lossy transcode, which is why keeping the original JPG is wise.
My JPG barely shrank. Why?
The JPG was probably already compressed aggressively. WebP wins by removing redundancy, and a low-quality JPG has little left. The biggest savings come from lightly compressed, high-quality sources.
Do photo sites and CMSs accept WebP uploads?
Increasingly yes, but it is the least supported direction: WordPress accepts WebP, while many older forms, print services and marketplaces still want JPG. Check the destination before batch-converting a library.
Is my photo analyzed or stored by this site?
Neither. The image bytes stay inside your browser tab; conversion is local WebAssembly. We could not build a dataset from your photos even if we wanted to, because they never reach us.