WebP Image Converter
Convert PNG, JPG and WebP images to any format. Batch supported. All processing is done in your browser.
Drag & drop image here
PNG · JPG · WebP · GIF supported
What is WebP Image Converter?
WebP is a modern image format developed by Google that provides superior compression for images on the web. For the same visual quality, WebP files are typically 25-35% smaller than JPEG and 26% smaller than PNG. For lossless images, WebP is 26% smaller than PNG. This size reduction translates directly into faster page loads, lower bandwidth costs, and better Core Web Vitals scores — all of which affect Google search rankings.
WebP supports both lossy compression (like JPEG, for photographs) and lossless compression (like PNG, for graphics with transparency), as well as animation (like GIF, but much more efficient). It also supports transparency (alpha channel), making it a complete replacement for both JPEG and PNG in most web contexts.
Browser support for WebP is now universal — Chrome, Firefox, Safari, Edge, and all modern mobile browsers support WebP natively. Google's PageSpeed Insights and Lighthouse actively recommend serving images in WebP format. Converting your existing JPEG and PNG images to WebP is one of the most impactful performance optimisations you can make for a website.
Altairys's WebP Converter converts JPEG, PNG, GIF, and BMP images to WebP format with adjustable quality settings, and can also convert WebP back to JPEG or PNG for applications that don't yet support WebP.
How to Use WebP Image Converter
- Upload your images
Drop JPEG, PNG, GIF, or BMP images — multiple files supported at once.
- Adjust quality
Set the WebP quality level (default 80) — higher quality means larger file size.
- Convert
Click Convert to generate WebP versions of all uploaded images.
- Download
Download individual files or all converted images as a ZIP archive.
Key Benefits
WebP files are significantly smaller than equivalent JPEG and PNG files for the same quality.
Smaller images mean faster page loads, improving Core Web Vitals and Google rankings.
WebP supports alpha channels — use it as a replacement for PNG with transparency.
Convert WebP back to JPEG or PNG for applications that need traditional formats.
Frequently Asked Questions
Yes. As of 2023, all major browsers — Chrome, Firefox, Safari (since 14), Edge, Opera, and their mobile versions — support WebP natively. It is safe to use WebP for any web project.
Use lossy WebP for photographs and images with gradients (like JPEG). Use lossless WebP for graphics, logos, screenshots, and images with text or sharp edges (like PNG). Lossless WebP is always larger than lossy.
At quality 85 and above, the difference is imperceptible to the human eye for photographs. For quality-sensitive uses, set quality to 90-95. Lossless WebP is mathematically identical to the original.
Not reliably. Most email clients do not support WebP. For email, use JPEG or PNG. WebP is best suited for web pages and web applications.