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PNG to WebP Converter

Convert PNG images to WebP format for free, instantly in your browser.

📁 Drag & drop image(s) here, or click to browse

Batch supported — select multiple files

Free PNG to WebP Converter — Smaller Files, Transparency Kept

WebP supports transparency just like PNG, but with significantly better compression — making it an ideal upgrade path for websites using transparent PNG graphics. Our free PNG to WebP Converter shrinks your images while preserving transparency, with batch processing and before/after comparisons.

Why Use This Tool

  • Keeps transparency: WebP supports alpha transparency just like PNG.
  • Smaller file sizes: Often significantly smaller than equivalent PNG files.
  • Batch conversion: Convert multiple PNG files together.
  • Optional resize: Set a target width and/or height (with aspect ratio lock) before converting.
  • No upload required: Everything processes locally in your browser.

Key Features

Batch Upload

Convert multiple files at once.

Before/After Comparison

See exact size savings per file.

Step-by-Step: How to Use

Step 1: Select one or more files to upload.

Step 2: Adjust the quality slider if needed.

Step 3: Click convert and download each result with its size comparison shown.

Benefits

  • Saves time compared to converting images one at a time.
  • Keeps your files private with fully local, in-browser processing.
  • Gives you full control over quality and file size trade-offs.

Common Use Cases

  • Converting website logos and icons with transparent backgrounds.
  • Optimizing transparent PNG graphics for faster page loads.
  • Reducing storage for icon libraries or UI asset collections.
  • Preparing transparent images for modern, performance-focused websites.

Privacy & Security

All conversion happens locally in your browser using HTML5 Canvas — your files are never uploaded to any server.

Frequently Asked Questions

Does WebP support transparency like PNG? +
Yes, WebP fully supports alpha transparency, making it a direct size-optimized replacement for transparent PNG images.
Yes, select multiple files in the upload dialog — each one is converted and shown with its own before/after comparison.
WebP files are often 25-50% smaller than equivalent PNG files, especially for images with large transparent or flat-color areas.
No, all processing happens locally in your browser using Canvas — nothing is sent to a server.
Yes, all modern browsers that support WebP also support its transparency features.
For websites focused on performance, yes — WebP offers meaningful size savings while keeping the same transparency support.
Yes, completely free with no limits on file conversions.
Yes, use the quality slider to balance file size against image sharpness.
Yes, the converted WebP keeps the same pixel dimensions as your original PNG.
All modern browsers including Chrome, Firefox, Safari, and Edge.

Related Tools

Also try our JPG to WebP Converter and WebP to PNG.

Ready to convert your images? Upload them above — free and instant.

Share Your Experience

Found this tool useful? Have a suggestion or found a bug? Send your feedback directly to us — we read every message.