ImagePDF.Tools
Format Converter

JPEG to WebP. Up to 35% smaller.

Convert JPEG images to modern WebP format. Same visual quality, significantly smaller files. All processing happens in your browser.

Processing securely on your device, no data sent to any server

Drop your images here

JPG · PNG · WebP · SVG

Privacy Note: We use your browser's hardware to process this file. Your image stays on your computer throughout the entire process, nothing is transmitted.
No upload·100% private·Instant
How it works

Three steps. Smaller WebP, instantly.

Drop your JPEG

Drag and drop JPEG files onto the converter, or click to browse. No batch limit, convert as many files as you need.

Format: WebP

Output is pre-set to WebP. Adjust the quality slider. Quality 80 is the optimal starting point for web use.

Save your WebP

Your converted WebP file is ready instantly. Save it directly to your device or get the whole batch as a ZIP.

Why it matters

Why switch from JPEG to WebP?

JPEG has been the standard photo format since the 1990s and remains excellent. WebP, released by Google in 2010, offers meaningfully better compression. For websites, that reduction directly improves Core Web Vitals.

Google PageSpeed score

PageSpeed Insights actively flags JPEG images as an improvement opportunity and recommends serving WebP instead. Switching is one of the fastest PageSpeed wins available.

Core Web Vitals (LCP)

LCP (Largest Contentful Paint) is heavily influenced by hero image file size. A WebP hero image is typically 30% smaller than its JPEG equivalent, directly reducing LCP time.

Bandwidth and hosting costs

Serving 35% smaller images means your CDN and hosting transfer less data every month. For high-traffic sites, this can reduce bandwidth costs noticeably.

E-commerce product images

Product pages with many images benefit most from WebP. Faster product image loading reduces bounce rates and increases the likelihood of a sale.

WordPress and CMS performance

WordPress 5.8+ supports WebP uploads natively. Replacing JPEG assets with WebP equivalents can shave megabytes off total page weight across your entire site.

Mobile user experience

Mobile users on slower connections benefit the most from smaller images. A 35% reduction in image size can mean the difference between a fast and a frustrating experience on 4G.

How it works under the hood.

When you drop a JPEG, the browser decodes it natively and draws it onto an HTML Canvaselement. The canvas is then exported as WebP using the browser's built-in WebP encoder. The quality slider controls the WebP compression level directly.

The entire process runs locally in your browser tab. No data is sent to any server. There is no upload, no server-side processing, and no risk of your images being stored or accessed by anyone else.

Common questions

Questions answered.

Why convert JPG to WebP?
WebP produces files that are 25-35% smaller than JPEG at the same visual quality. For websites, this means faster page load times and better Core Web Vitals scores. Google recommends WebP as the preferred format for web images.
Does WebP look better than JPEG at the same file size?
Yes. WebP uses a more efficient compression algorithm than JPEG. A WebP file at quality 80 typically looks as good as a JPEG at quality 90, while being significantly smaller.
Will WebP work on all browsers?
WebP is supported by Chrome, Firefox, Safari (since version 14), Edge, and Opera, covering over 98% of global browser usage. For users on older browsers, you can serve a JPEG fallback using the HTML picture element.
What quality setting should I use?
Quality 80 is the sweet spot for most web use cases. It gives the best file size reduction while remaining visually identical to the original at typical screen sizes. For print or archival use, set quality to 90-95.
Is my image uploaded to a server?
No. The conversion runs entirely in your browser using the Canvas API. Your file never leaves your device.
Can I convert multiple JPEG files to WebP at once?
Yes. Drop as many files as you need, there are no batch limits.
Is WebP supported by Google Search?
Yes. Google crawls and indexes WebP images just like JPEG. Google's own PageSpeed Insights tool actively recommends serving images in WebP or AVIF over JPEG for better performance scores.
Can I use WebP images in emails?
Most modern web-based email clients, including Gmail, Apple Mail, and Outlook on the web, render WebP inline. However, Outlook desktop on Windows still requires JPEG or PNG for reliable inline rendering. If universal email compatibility is critical, use JPEG instead.
Related tools

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