How do I convert JPG to WebP?

Drop your JPG or JPEG images into the converter. Each becomes a WebP file in your browser; download them individually or as a ZIP.

Is WebP better than JPG?

For websites, usually yes — WebP is smaller at similar quality and supports transparency. JPG is still the safest choice for email and older software.

Is WebP supported in all browsers?

All current versions of Chrome, Edge, Firefox, Safari and Opera display WebP. Very old browsers and some email clients do not.

Why is my WebP sometimes larger than the JPG?

A JPG that is already heavily compressed may not shrink further. In that case keep the original or lower the quality with the Image Compressor.

Are my images uploaded anywhere?

No. Conversion runs entirely in your browser with the Canvas API. Files never leave your device, so the tool is safe for private photos, client work and confidential screenshots.

Free tool

JPG to WebP converter

Make your JPEG photos lighter for the web. Convert JPG to WebP in batches, see how many kilobytes you save, and download the results — without uploading a single file.

Runs entirely in your browser — nothing is uploaded.

Converting JPG → WebP

Guide

Speed up your site by converting JPG to WebP

Images are usually the heaviest part of a web page. Serving WebP instead of JPG trims bytes, improves Largest Contentful Paint and helps Core Web Vitals.

Smaller at the same quality

WebP typically saves 25–35% versus a JPG of similar visual quality, and every modern browser — Chrome, Safari, Firefox, Edge — supports it.

Better Core Web Vitals

Lighter hero images load sooner, which directly improves Largest Contentful Paint, one of the signals Google uses in page experience.

Keep a JPG fallback for email

Some email clients, notably older Outlook versions, do not render WebP. For newsletters and mail merges, keep JPG or PNG images.

Batch-convert a whole folder

Select every product photo or blog image at once, convert them together and download a single ZIP ready to upload to your CMS.

How to convert JPG to WebP

Drag your JPG files onto the drop area, or click it to pick them.
Each image converts to WebP instantly — the new size appears beside it.
Download files one by one, or click Download all as ZIP.

Need the file under a size limit too? Run it through the Image Compressor to hit 100KB, 200KB or 500KB. Browse every utility in Mailvern's free tools.

Converters

Other image conversions

Each converter runs on the same private, in-browser engine.

Image ConverterConvert any JPG, PNG or WebP image to another format in batches.JPG to PNG converterTurn JPEG photos into lossless PNG files.PNG to JPG converterShrink PNG files into universally supported JPGs.PNG to WebP converterSmaller files that keep PNG transparency.WebP to JPG converterMake WebP downloads open in any app.WebP to PNG converterLossless PNGs from WebP, transparency kept.

FAQ

Frequently asked questions

Everything people usually ask about this tool.

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