How to convert JPG to WebP
- Drop your .jpg or .jpeg files onto the box above.
- The output is already set to WebP.
- Leave quality at 90% unless you have a reason to change it.
- Download each result, or the whole batch as a ZIP.
How much smaller, really
At matched visual quality, WebP files are typically 25 to 35 percent smaller than the JPEG they came from. On a photograph-heavy page that is the single cheapest performance win available — no code changes, no infrastructure, just smaller bytes.
The saving comes from better compression, not from throwing away more detail. WebP uses prediction techniques JPEG could not, because JPEG was designed in 1992.
One caveat worth knowing: converting an already heavily compressed JPEG will not save as much, and re-compressing lossy to lossy always costs a little quality. Convert from the highest-quality original you have.
JPG vs WebP
JPEG is universal. Thirty years of software reads it, and it will still be readable in another thirty. It cannot store transparency, and its compression is dated.
WebP is smaller at the same quality, handles transparency, and is supported by every browser released in the last several years. Outside the browser its support is thinner — some desktop applications and older tools still will not open it.
The practical rule: WebP for anything served over the web, JPEG for anything handed to a system you do not control.
Common questions
- Will the image quality drop?
- At 90% quality the difference is not visible in normal viewing. Both JPEG and WebP are lossy, so re-encoding does discard a little information — convert from your best original rather than from a file that has already been compressed several times.
- Are my images uploaded?
- No. Your browser does the conversion itself; no file is sent to a server. You can verify it by disconnecting from the network after the page loads — the converter keeps working.
- Can I convert an entire folder of images?
- You can select or drop many files at once, and download the results as a single ZIP. Files are converted a couple at a time so the page stays responsive.
- Should I keep the original JPGs?
- Yes, keep them. WebP is what you serve; the original is what you re-encode from if you ever need a different size or format. Converting from an already-converted file loses a little more quality each time.