OneTaskBy Tim King · Updated
WebP to JPG Converter
WebP to JPEG or Back, With a Quality Slider and Optional Max Width
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How the WebP To JPG works
This WebP to JPG converter flattens onto any colour. Drop a WebP on the page and it is converted to a JPG at the quality you choose. WebP files saved from a web page often will not open in older editors, upload forms or office software; a JPG will. The preview and the file sizes update as you adjust the slider, and the download is created in your browser. Drop a JPG instead and the same page converts it to WebP: the output is always the format you did not drop.
WebP to JPG: what it does and why
WebP to JPG is the conversion that happens after right-clicking and saving an image from a
website. Browsers have served WebP for years, so the file you saved is very likely a .webp, and
the software you want to use it in may not be.
Why software still rejects WebP. Browsers, phones and modern editors all read WebP, but plenty of tools do not: older versions of Photoshop and Office, many print shops, some CMS upload filters, most email clients and a long tail of desktop applications. JPEG is the safe interchange format because everything since the 1990s reads it.
Transparency. WebP can carry an alpha channel; JPEG cannot. If the WebP has transparent regions they are filled with white before encoding. That is right for most documents and light pages; if you need the transparency preserved, convert to PNG instead.
Quality. The default is 90, higher than for the other conversions on this site, because a WebP is usually already lossy and a second lossy pass at a low setting compounds the artefacts. At 90 the result is close to indistinguishable from the WebP; lower it only if the file size matters more than fidelity. If the WebP was lossless, any quality still produces a lossy JPEG.
Width. Leave blank to keep the original pixel dimensions, or set a cap and the image is scaled down proportionally before encoding.
Animated WebP. Only the first frame is converted, because JPEG has no animation. Use the GIF frame extractor if you need the individual frames.
Metadata. The WebP is decoded to pixels and re-encoded, so any EXIF block or colour profile it carried is not copied into the JPG. That is usually what you want for an image saved from a web page, since there is rarely anything worth keeping, but if the WebP came from a camera export and the shooting data matters, keep the original alongside the converted copy.
Going the other way: JPG to WebP
JPG to WebP is the single most common image conversion on the modern web, because it is what performance audits ask for: Lighthouse flags every JPEG on a page under "serve images in next-gen formats", and WebP is the format it means.
How much smaller. At matched visual quality WebP is typically 25 to 35 per cent smaller than JPEG for photographs. The gain comes from a better predictor and entropy coder, not from throwing away more detail, so a WebP at quality 80 looks about as good as a JPEG at 85 while being noticeably lighter. The saving is largest on clean, well-lit photos and smallest on noisy or already heavily compressed JPEGs, where there is little structure left to predict.
Converting a JPEG is a second lossy step. The JPEG has already discarded detail; the WebP encoder discards a little more. At quality 80 and above the compound loss is invisible in practice, but it is there, so if you have the original camera file or a PNG master, convert from that instead of from a JPEG export.
Quality. 75 to 85 is the range most sites settle on. Below 70 flat areas start to look mottled; above 90 the file grows quickly for no visible return. The default of 80 is a sensible place to start; compare the preview against the original at full size and adjust.
Width. A cap scales the image down before encoding. For a photo that will be displayed 800 px wide, setting a 1600 px cap (double, for high-density screens) usually saves more than any quality setting can.
Support. Every current browser reads WebP, including Safari from version 14 and every mobile browser. The remaining gaps are email clients and some older desktop software, so keep the JPG for anything going into an email template or a document.
FAQ
Why can't I open a WebP file?
The application is too old or too conservative to include a WebP decoder. Convert it to JPG here and the same application will open it.
Does WebP to JPG lose quality?
Slightly, because JPEG is lossy. At quality 90 the loss is not visible in normal viewing; at 75 and below you may see softening in fine detail.
What happens to transparent parts of the WebP?
They become white. JPEG has no way to store transparency, so every transparent pixel is flattened onto a white background before encoding. Convert to PNG instead if you need to keep the alpha channel intact.
Can I convert an animated WebP to JPG?
Only its first frame. JPEG is a still-image format with no support for animation, so the browser decodes the first frame of the animated WebP and the rest of the frames are discarded.
Is WebP better than JPG?
For the web, yes: smaller files at the same quality, plus transparency and animation if you need them. For archiving or printing, the JPEG is fine and more widely understood by old software.
See also: all Images tools, Units, Audio & Video, Documents, Data & Code.