PNG to WebP Online Converter
Convert PNG images to WebP format, reducing file size by an average of 30-50%.
Drop PNG images here
or click to select files, supports multiple selection
Why Convert to WebP Format
Smaller Files
WebP is 30-50% smaller than PNG, significantly saving storage space and bandwidth.
Maintain Quality
While reducing file size, WebP maintains visual quality comparable to PNG.
Modern Standard
WebP is the standard format for modern browsers, supported by all major browsers.
Better Performance
Smaller files mean faster loading times and improved user experience.
How to Convert PNG to WebP Online Free
Drop Your PNGs In
Click the upload area or drag PNG images into the browser. This PNG to WebP converter handles batch uploads — product photos, website graphics, design assets, all at once. Standard PNGs work, and so do files with alpha transparency (WebP preserves it perfectly). Everything runs locally, so your images never leave your computer.
Choose Quality, Get WebP
Conversion starts automatically once files are loaded. The quality slider controls compression — 90-100% gives near-lossless results visually identical to the original PNG. Lower values (70-85%) maximize file size savings. WebP supports both lossy and lossless modes, and the converter picks the best approach based on your setting. Alpha transparency carries over untouched.
Download the Savings
Each WebP file shows its new size with a savings percentage compared to the original PNG. Download one by one or batch-save everything at once. Expect files 30-50% smaller than the originals — ready to upload to your website, CMS, or CDN for immediate performance gains.
PNG to WebP Tips
Why WebP Crushes PNG for Web Use
WebP is 30-50% smaller than PNG at the same visual quality, with full transparency support. That means faster pages, lower bandwidth, and better Core Web Vitals scores — things that directly affect user experience and search rankings. WebP also handles animation (replacing animated GIFs with much smaller files), though this converter focuses on static images. For any site using PNG assets, switching to WebP is one of the highest-impact optimizations available.
Real Performance Gains from WebP
A typical e-commerce site with hundreds of product images can cut total image weight by 30-50% just by converting PNGs to WebP. That translates to 1-3 seconds faster page loads — studies show this can boost conversion rates by up to 7%. For mobile users on limited data plans, the savings hit even harder. Combined with lazy loading and responsive images, WebP compression is the foundation of modern image optimization.
Browser Support Is a Non-Issue Now
All major browsers support WebP — Chrome, Firefox, Edge, Safari, Opera. Over 95% of web users globally can view WebP images as of 2024. For the tiny fraction on older browsers, use the HTML picture element with PNG fallback. Most CMS platforms like WordPress handle this automatically through plugins. Our converter makes it easy to generate both formats so everyone sees optimized images.
Frequently Asked Questions
WebPはPNGと比べてどれくらい小さくなりますか？
WebPは同じ視覚品質を維持したまま、PNGと比較して通常25〜35%ファイルサイズを削減します。ロッシー圧縮では80〜90%の削減が可能です。ロスレスWebPでも約30%小さいファイルが得られます。
WebPはPNGのように透過をサポートしていますか？
はい、WebPはアルファ透過チャンネルを完全にサポートしています。透過付きのPNGを完璧にWebPに変換できます。WebPはWebにおけるPNGの理想的な代替です。
WebPはすべてのブラウザでサポートされていますか？
Chrome（2010年以降）、Firefox（2018年以降）、Safari（2020年以降）、Edge（2018年以降）など、すべての主要ブラウザでサポートされています。Webユーザーの97%以上がWebP画像を表示できます。
すべてのPNGをWebPに変換すべきですか？
Webでの使用においてはイエスです。PNGをWebPに置き換えることで品質を損なうことなく読み込み速度が向上します。Web以外で編集が必要な画像は元のPNGを保管してください。