Convert PNG to WEBP - Free Online Image Converter

Online convert PNG to WEBP format with our fast and free image converter. No email or registration. Batch conversion up to 100 MB with advanced compression for high quality and smaller file sizes.

Click to select multiple images

Only PNG files will be accepted

How to Convert Images

1

Select your input and output formats from the dropdowns above

2

Click or drag and drop your images into the upload area

3

Your images will be automatically converted

4

Download individual files or all files as a ZIP

PNG to WEBP Conversion

PNG files use lossless compression. This means you can edit and save a PNG as many times as you want without losing any quality. PNGs also support transparency, allowing parts of your image to be see-through. This makes PNG ideal for logos, graphics, and any image that needs to be layered over other content.


WebP is a modern image format developed by Google that provides superior lossless and lossy compression for images on the web. WebP images are significantly smaller than PNGs and JPEGs, making them ideal for faster website loading times.

Frequently Asked Questions

PNG's DEFLATE compression, while lossless, is relatively inefficient compared to modern algorithms - a 4000×3000 PNG photo easily exceeds 3-8MB. These large files slow website loading, increase hosting bandwidth costs, and penalize mobile users on metered data plans. Poor page load times directly harm SEO rankings and user experience metrics. Converting PNG to WebP (lossless mode) reduces file size by 26% on average with zero quality loss - perfect quality preservation with better compression. Using WebP's lossy mode with quality 80-90 achieves 60-70% smaller files with minimal perceptual difference. WebP maintains full alpha transparency support, making it a complete PNG replacement for modern web development. Significantly improves Core Web Vitals scores, especially Largest Contentful Paint (LCP). Supported by all modern browsers since 2020 - implement with PNG fallback for legacy browser support.
Yes, Convertlet is 100% free to use. You can convert as many images as you want without any hidden fees or subscriptions.
Absolutely. All conversions happen securely. Your files are processed and then immediately deleted from our servers to ensure your privacy.
We support a wide range of image formats. Input formats: .jpg, .jpeg, .png, .webp, .gif, .svg, .heic, .heif, .avif, .bmp, .ico, .tiff, .dng, .eps. Output formats: .png, .jpg, .jpeg, .webp, .avif, .bmp, .gif, .ico, .tiff. You can convert between any of these formats easily.

Free online image converter • Secure & Private • No registration required