About This Tool
Convert and compress images entirely within your browser using HTML5 Canvas technology. 100% private and client-side—your photos never leave your device or get uploaded to any third-party server. Ideal for converting legacy PNGs and JPGs to lightweight WebP for lightning-fast Core Web Vitals.
1 How to Use Step-by-Step
1. Drag & drop single or multiple image files into the drop zone (or click to browse).
2. Select your desired output format (WebP, PNG, JPG).
3. Adjust the compression quality slider (85% recommended for WebP).
4. Download individual converted files or clear the queue.
Practical Examples
Input: 2.4 MB hero-image.png
Output: 210 KB hero-image-converted.webp (91% size reduction with crisp visual fidelity)
Common Use Cases
• Converting website assets to WebP for Google PageSpeed / LCP optimization
• Converting transparent WebP or JPGs to PNG
• Quick batch compression for email attachments
Common Pitfalls & Mistakes
• Setting quality below 60% which may cause visible compression artifacts
• Converting already compressed JPGs to PNG (which increases file size)
Frequently Asked Questions
Are my images uploaded to your servers?
No! Conversion takes place 100% locally inside your web browser using HTML5 Canvas API. Your images never leave your computer.
Why should I convert to WebP?
WebP provides superior lossless and lossy compression, resulting in 25-35% smaller file sizes compared to PNG and JPEG while preserving identical visual quality.