JPG to WebP Converter — Smaller, Faster Images
Convert JPEG to WebP to cut file size. Quality 80–90 preserves visual quality. Understand generation loss: why re-compression can degrade images.
Drop JPEG files here or click to pick
Output: WEBP · runs locally in your browser
90–95 is visually lossless for photos. Drop to 75–85 for the web.
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Generation loss: re-compressing an already-compressed image
A JPEG has already discarded detail as part of its compression. When you convert it to WebP, the browser decodes the JPEG back to pixels—including its compression artefacts—and compresses again. The artefacts are now part of the picture the encoder is trying to preserve, so it spends bits reproducing the flaws faithfully. This is generation loss, and it is why repeatedly converting between lossy formats degrades an image while converting once is usually fine.
Choosing the quality setting
The quality slider defaults to 92 and runs from 40 to 100. For a source JPEG that was already saved at high quality, a WebP around 80–90 typically produces a clearly smaller file at visually indistinguishable quality, because WebP is simply more efficient at the same perceived quality. Going much below 75 starts to compound the source's existing artefacts visibly, especially around hard edges and text. The guidance shown in the tool—90–95 is visually lossless for photos. Drop to 75–85 for the web.—reflects this balance.
How to judge the result
Do not trust the quality number. Convert, compare the reported before and after file sizes, and then view the result at 100% zoom on the most detailed part of your image—flat areas like skies and any text or hard edges are where compounded artefacts show first. Each source-to-target pair remembers its own quality setting, so the value you tune for JPEG to WebP does not disturb your PNG to WebP setting.
When not to re-compress
If you still have the original uncompressed or raw file, converting that straight to WebP always beats going through the JPEG — one lossy step instead of two. And re-converting an already-small JPEG can produce a larger WebP, because the encoder faithfully preserves artefacts that carry no real detail. If the reported output size is bigger than the input, that is what has happened; raising the quality will not help, and the sensible move is to keep the JPEG.
Metadata is not carried over
Because the conversion runs through a canvas, the output carries no metadata at all: no EXIF block, no ICC colour profile, no GPS coordinates, no camera or lens settings, and no copyright or author fields. For most web use this is a benefit, and a real one — a photo taken on a phone can carry the exact location it was taken, and publishing it strips that automatically here. For photographers who rely on embedded copyright or capture data, keep the original alongside the converted file.
For other image transformations, try the JPG to PNG Converter, PNG to JPG Converter, or Image to Text (OCR).
How to use the JPG to WebP Converter
Takes about a minute. No signup, no download, your data stays in your browser.
- 1Open the tool. Scroll up to the JPG to WebP Converter above — it loads instantly in your browser, no install needed.
- 2Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
- 3Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.
Frequently asked questions
Common questions about the JPG to WebP Converter.
What is generation loss in image conversion?
A JPEG has already discarded detail through compression. Converting it to WebP decodes it back to pixels, artefacts included, and compresses again — and the encoder treats those artefacts as real detail worth preserving. That is generation loss. Converting once is usually fine; converting repeatedly between lossy formats degrades the image each time. If you still have the original or raw file, convert that instead.
What quality setting should I use for JPEG to WebP?
The slider defaults to 92 and ranges from 40 to 100. For source JPEGs saved at high quality, 80 to 90 usually gives a visibly identical result in a clearly smaller file, since WebP encodes more efficiently. Below about 75 the source artefacts start compounding visibly on edges and text. Judge it by looking rather than by the number: convert, compare the sizes, then inspect the most detailed area at 100 percent zoom.
Why is my WebP file bigger than the JPEG I started with?
Because the encoder is faithfully preserving the JPEG compression artefacts, which are visually worthless but expensive to encode. This happens most with small or heavily compressed source JPEGs. Raising the quality makes it worse, not better. When the output is larger than the input, the right answer is usually to keep the original JPEG.
Does WebP preserve my photo EXIF, copyright, and camera settings?
No. The canvas-based conversion produces a file with no metadata at all — no EXIF, ICC profile, GPS coordinates, camera settings, or copyright fields. That is useful for privacy, since it removes location data from photos you publish, but it means photographers who need embedded copyright or capture data should keep the original file too.
Is my image uploaded to a server?
No. The file is read, decoded and re-encoded by your own browser, so the image never leaves your device. That matters here because photos frequently carry GPS coordinates and other personal metadata in their original form.
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