What does the Image to WebP converter do?
WebP is an image format developed by Google that gives smaller files than JPG and PNG for the same visual quality. Google's own studies found lossy WebP files about 25–34% smaller than comparable JPGs, and lossless WebP about 26% smaller than PNGs. Every major browser supports it today.
Smaller images mean faster pages, and faster pages mean better user experience and better Core Web Vitals scores, which Google uses as a ranking signal. Converting your images to WebP is one of the easiest speed wins available.
This tool converts your images with two modes. Lossy mode (the default) is right for photos: set the quality, with 75–85 giving a good balance. Lossless mode keeps every pixel exactly, which suits logos, icons, screenshots and graphics with sharp edges or text. Transparent backgrounds are kept in both modes.
Using the Image to WebP Converter for your business
Converting images to WebP is one of the quickest speed wins on most sites. Doing it across every template, with caching and lazy loading set up properly, is what our technical SEO service covers, and for online shops our ecommerce SEO team applies it to every product and category page.
How to use the Image to WebP Converter
- Upload images. Add up to 10 JPG, PNG, GIF, BMP, TIFF, HEIC or AVIF files.
- Set the quality. 80 is a good starting point for photos.
- Choose lossless if needed. Tick lossless for logos, icons and screenshots.
- Click Convert to WebP. Each image is converted and you'll see how much smaller it is.
- Download and upload to your site. Download the WebP files one by one or as a ZIP.
Why convert images to WebP
Faster pages
Smaller images reduce load time, especially on mobile data.
Better Core Web Vitals
Lighter images help Largest Contentful Paint, a metric Google uses in ranking.
Transparency included
WebP replaces both JPG and PNG, transparency and all.
See the savings
Every result shows how much smaller the WebP is than your original.
How to use WebP images on your website
On WordPress, you can upload WebP files directly to the media library (WordPress has supported WebP since version 5.8). Image optimisation plugins can also convert your existing library automatically and serve WebP to supporting browsers.
On a custom site, use the picture element to serve WebP with a JPG fallback, and always set width and height attributes on images so the layout doesn't shift while they load. Lazy-load images below the fold with loading="lazy", but not your main hero image, which should load immediately.
Converting images is only one part of page speed. Render-blocking scripts, slow hosting and unoptimised fonts often matter just as much. If your speed scores stay low after converting images, run our website speed test to see what else is slowing the page down.
Online stores benefit most. Category pages can show dozens of product photos, and converting them to WebP can cut the page weight dramatically. Faster category and product pages mean shoppers see products sooner, bounce less and are more likely to add to cart, and Google can crawl more of your catalogue in the same time.
Is it safe to upload my files?
Your files are processed on our own server, not sent to any third-party service, and are deleted automatically 30 minutes after processing. We strip location data from photos when converting them, and we never use your files for anything else.
Frequently asked questions
How much smaller is WebP than JPG?
Typically 25–35% smaller at similar visual quality, sometimes more.
Should I use lossy or lossless WebP?
Lossy for photos, lossless for logos, icons, screenshots and graphics with text.
Do all browsers support WebP?
Yes, all current major browsers do. Very old browsers can be given a JPG fallback.
Can I upload WebP to WordPress?
Yes. WordPress has supported WebP uploads since version 5.8.
Does WebP keep transparency?
Yes, both lossy and lossless WebP support transparent backgrounds.