Free JPG to WebP Converter
Convert JPG and JPEG images to WebP, fine-tune output quality and compare file sizes without uploading your image.
Use files up to 25 MB. Decoded and resized images are limited to 40 million pixels where dimensions are available. A smaller file may work better on phones. Changing a file or settings clears the previous result.
How to convert JPG or JPEG to WebP
Choose a JPG image, adjust the WebP quality, select Convert to WebP, then review the output size and download your file. The converter keeps the source image's width and height.
Why use WebP for web images?
WebP is designed for efficient image compression and is supported by modern browsers. Depending on the source and quality setting, it can produce a smaller download while retaining useful visual detail—helpful when preparing images for a website.
Balance WebP quality and file size
Lower quality settings can create smaller files, while higher settings preserve more detail. Because WebP is not guaranteed to beat every JPG, compare the original and output sizes shown after conversion. If dimensions also need changing, use the Image Resizer.
Local, private image conversion
Conversion runs in your browser, so the JPG is not uploaded to Utivaro. Need the reverse format change? Use WebP to JPG. For an iPhone photo, start with HEIC to JPG.
Frequently Asked Questions
How do I convert JPG to WebP?
Choose a JPG image, set the quality, select Convert to WebP and download the result.
Will WebP always be smaller than JPG?
No. Output size depends on the source image, dimensions and chosen quality setting.
Does the converter change image dimensions?
No. This converter keeps the original width and height.
Is the JPG uploaded?
No. The conversion runs locally in your browser.
JPG vs WebP: measured sizes
We saved the same images in each format with a standard image library. Sizes are in KB.
| Image | JPG (q85) | WebP (q80) | PNG |
|---|---|---|---|
| Indoor photo, 1024 × 576 | 79 | 37 | 563 |
| Busy street photo, 600 × 800 | 150 | 114 | 829 |
| Text graphic, 1024 × 576 | 67 | 29 | 53 |
WebP was 24–54% smaller than JPG for these photos, which speeds up web pages. Keep JPG copies for upload forms, print services and older software, which don't always accept WebP. See JPG vs PNG vs WebP for when each format fits.