H1Site WebP Converter
Easily convert your PNG and JPG images to WebP format directly from your WordPress admin panel. Select the images to convert, and the plugin automatically updates your database with the new file links.
H1Site WebP Converter
WordPress Plugin v1.0
What Is the WebP Format and Why Should You Use It?
WebP is a modern image format developed by Google that offers superior compression compared to traditional formats like JPEG and PNG. Using advanced compression algorithms, WebP can reduce image file sizes by 25% to 35% compared to JPEG, and up to 26% compared to PNG, while maintaining equivalent visual quality.
In practical terms, this means your web pages load faster, consume less bandwidth and offer a better user experience. In a world where loading speed is a major ranking factor for Google, switching to WebP is no longer optional — it's a necessity to stay competitive.
The WebP format supports both lossy and lossless compression, as well as transparency (alpha channel) and animations. It's supported by all modern browsers, including Chrome, Firefox, Safari, Edge and Opera, covering over 97% of web users worldwide.
Superior compression
25-35% smaller than JPEG with the same visual quality. Your pages load faster without sacrificing appearance.
Transparency supported
Unlike JPEG, WebP supports transparency while offering much smaller files than PNG.
Universal compatibility
Supported by over 97% of modern browsers including Chrome, Firefox, Safari and Edge.
Recommended by Google
Google PageSpeed Insights actively recommends WebP format to improve your site's Core Web Vitals.
Why Convert Your WordPress Images to WebP?
Images account for an average of 50% of a web page's total weight. On a typical WordPress site, you may have hundreds, even thousands of images in your media library. Every unoptimized image slows down your site, increases your bounce rate and hurts your SEO.
By converting your images to WebP, you can significantly reduce your WordPress site's loading time. Google uses Core Web Vitals as a ranking factor, and the Largest Contentful Paint (LCP) — which measures the loading time of the largest visible element — is directly impacted by your image sizes.
Our H1Site WebP Converter plugin simplifies this process by allowing you to convert your existing images directly from the WordPress admin interface, without needing external software or technical knowledge. The plugin also automatically updates the references in your database, eliminating broken links and ensuring a seamless transition.
Average reduction
25-35%
Image file size reduction when switching from JPEG/PNG to WebP
H1Site WebP Converter Plugin Features
A simple, effective and free WordPress plugin to convert all your images to WebP and speed up your website.
Image selection
Choose precisely which images to convert in your WordPress media library. Individual or batch conversion based on your needs.
PNG & JPG conversion
Convert your existing JPEG and PNG images to high-quality WebP format. The plugin handles both source formats optimally.
Database update
Image links are automatically updated in the WordPress database. No manual intervention needed for posts, pages and products.
WooCommerce compatible
Works perfectly with WooCommerce to convert your product images, galleries and variations. Speed up your online store.
Simple interface
Intuitive interface directly in the WordPress admin panel. No complex configuration or technical knowledge required.
100% Free
No fees, no limits. Our plugin is completely free, developed by our team at H1Site to help the WordPress community.
How to Use H1Site WebP Converter
Four simple steps to convert your WordPress images to WebP and improve your site speed.
Install
Download the plugin and install it via the WordPress Plugins section.
Select
Choose the PNG and JPG images you want to convert in your media library.
Convert
Start the conversion. The plugin converts your images and updates the database automatically.
Enjoy
Your site is now faster with optimized WebP images everywhere.
WooCommerce: Optimize Your Product Images
If you run a WooCommerce store, you know that product images are essential for your sales. High-quality images are necessary to convince your customers, but they can significantly slow down your online store if not optimized.
H1Site WebP Converter is fully compatible with WooCommerce. It converts your product page images, image galleries, variation images, and automatically updates all references in the WooCommerce database. Your customers benefit from a faster store, and you improve your conversion rate.
- Conversion of WooCommerce product and gallery images
- Support for product variations and multiple images
- Automatic product metadata update
- No impact on your store's functionality
Technical Details: Conversion and Database
The H1Site WebP Converter plugin uses PHP's GD library (present on most WordPress hosting) to perform image conversion. When you select images to convert, the plugin creates a WebP copy of each file while preserving the originals, allowing you to revert if necessary.
What sets our plugin apart from other solutions is the automatic WordPress database update. After conversion, the plugin scans all relevant tables (wp_posts, wp_postmeta, wp_options) to replace old image references (.jpg, .png) with new WebP references (.webp). This includes post content, custom fields, media metadata and WooCommerce data.
This approach ensures no broken links remain after conversion. Whether the image is used in a blog post, homepage, WooCommerce product page or widget, the link will automatically be updated to the WebP version.
Technical requirements
SEO Impact: How WebP Improves Your Rankings
Your website's loading speed is a direct ranking factor for Google. In 2021, Google launched Core Web Vitals as ranking signals, and images play a major role in these metrics. The Largest Contentful Paint (LCP), which should ideally be under 2.5 seconds, is often dominated by hero images and product images.
By converting your images to WebP with our plugin, you significantly reduce the LCP of your pages. A lower LCP means a better Google PageSpeed Insights score, which translates to better positioning in search results. Fast sites also benefit from lower bounce rates and longer session times.
Additionally, WebP images consume less bandwidth, improving the experience on mobile devices — a critical aspect since Google now uses mobile-first indexing. A fast mobile site is rewarded with better rankings, both in organic results and Google Maps for local businesses.
25-35%
Lighter files
compared to JPEG/PNG
+15%
PageSpeed score
average improvement
97%+
Compatibility
browsers supported
Download H1Site WebP Converter for Free
Speed up your WordPress site in minutes. Install our free plugin and convert your images to WebP today.