Convert JPG to WebP
Create a WebP copy for modern websites while keeping the original dimensions. Preview the result and compare its file size before saving.
Add your image
JPG, PNG or WebP · Up to 50 MB · Up to 40 megapixels
Choose output format
Your images are processed locally in your browser and are not uploaded to our servers.
How it works
Choose a JPG image from your device.
Select Convert Image to encode a WebP copy at the original pixel dimensions.
Preview the WebP, compare its file size, and download the result.
Why use this tool
WebP is designed for efficient delivery on the web and can often reduce the size of a photographic JPG while keeping useful visual quality. ImgZelo performs the conversion locally in your browser and does not upload the selected JPG to ImgZelo servers.
How JPG and WebP differ
JPG is a mature photographic format with broad support across cameras, editors, office software, print workflows, and older systems. WebP is a newer web-focused format that supports efficient lossy and lossless compression as well as transparency, although a JPG source does not gain transparency simply by being converted.
For many photographs, WebP can represent similar visual detail in fewer bytes than JPG. The actual result depends on the source image and its previous compression. A heavily compressed JPG may not become much smaller, and converting between lossy formats can slightly change fine texture or introduce artifacts.
Use WebP to reduce page weight
Smaller image files can improve download times, especially on mobile connections or pages with many photographs. WebP is useful for website hero images, article illustrations, product photographs, portfolio thumbnails, and content management systems that accept the format. Modern browsers widely support WebP for normal web viewing.
The converter keeps the original width, height, and aspect ratio. That makes it easy to replace a JPG asset without changing layout dimensions, but file format alone does not make an oversized image responsive. For best web performance, also serve suitable pixel dimensions and avoid loading a large original where a small thumbnail is displayed.
When the original JPG is still useful
Keep the JPG when you need maximum compatibility with older software, a print provider, an upload form that does not accept WebP, or a workflow built around JPEG files. The original is also valuable as a fallback and as a reference if the converted result does not look better or become smaller.
Compare both file size and visible quality before replacing an asset. Look closely at text, hair, foliage, gradients, and already-compressed edges. If the WebP is larger or shows unwanted changes, continue using the JPG. If you need a specific upload limit, convert first and then use the compressor on the format the destination accepts.
Frequently asked questions
Will WebP always be smaller than JPG?
No. WebP is often smaller for comparable web quality, but the result depends on the source image and its existing compression.
Does conversion change image dimensions?
No. The WebP keeps the JPG's original width, height, and aspect ratio.
Can I use WebP in browsers?
Modern browsers support WebP for common website images. Check any older software or publishing platform that must also open the file.
Should I delete the original JPG?
Keep it as a master or compatibility fallback until you have confirmed the WebP works everywhere you need it.
Is my JPG uploaded for conversion?
No. Images are processed locally in your browser and are not uploaded to ImgZelo servers.