JPG to WebP Converter
Convert JPG images to WebP format — typically 25-35% smaller with the same visual quality. Perfect for web optimization. Batch supported.
JPG vs WebP: what changes
- WebP files are usually smaller than JPG, so this is a good way to save space or speed up a page.
- Converting to WebP gives you transparency support, though this conversion won't recover any transparency that JPG already discarded.
- WebP is supported in all modern browsers (Chrome, Firefox, Edge, Safari 14+), making it a great choice for web use.
| JPG | WebP | |
|---|---|---|
| Full name | Joint Photographic Experts Group | Web Picture format (Google) |
| Type | raster | raster |
| Compression | lossy | both |
| Transparency | No | Yes |
| Animation | No | Yes |
| Best for | photos, web images | web images (smallest size) |
| Browser support | universal | modern |
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Written by Anil Gautam · Updated
What does the WebP quality slider change?
The slider runs from 50% to 100% and starts at 80%. Its value goes to your browser's WebP encoder as a number from 0.5 to 1.0, and anything below 100% produces lossy WebP. At exactly 100%, Chrome and Edge switch to lossless WebP, which stores the decoded image without further loss and, for a photo, can weigh more than the JPG you started with.
Pressing Convert to WebP again re-encodes every loaded file from the original JPG at the current setting. To compare, convert at 80%, note the sizes, then try 70% or 90% and convert once more. Dragging files onto the drop zone accepts any image type, so a stray PNG in the batch is converted too; the file picker is set to JPG files.
Why is the WebP only a little smaller than my JPG?
A JPG has already discarded detail, and the WebP encoder treats the JPG's block edges and noise as part of the picture it must reproduce. Heavily compressed JPGs leave little to gain, and small ones can even grow. Each card shows a percentage only when the output is smaller: a 2.00 MB JPG that becomes 1.30 MB reads 35% smaller.
Pixel dimensions stay exactly the same, and they often matter more than the format. A 4000 x 3000 camera photo has 12 million pixels; displayed at 1200 x 900 on a web page, it needs only 9% of them. Shrink it first with Bulk Image Resizer, which saves PNG files, then convert those with PNG to WebP Converter.
What else changes when a JPG becomes WebP?
Camera metadata is dropped because the browser writes a fresh file from decoded pixels. GPS coordinates and capture dates disappear from photos you publish, and so do copyright fields some photographers embed. Names keep their base with a new extension, so holiday.jpeg becomes holiday.webp, and a batch downloads as jpg-to-webp-converted.zip.
Every conversion adds one more lossy step on top of the JPG's own, so start from the largest, least compressed copy you have. Keep the original JPGs too: if you need a JPG again later, making one from the WebP with WebP to JPG Converter adds yet another lossy step.
For a batch that mixes formats, or for quality settings below 50%, Image to WebP Converter accepts any image your browser can open and goes down to 20%.