Convert PNG to WebP
Free, fast, and private. All processing happens in your browser.
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Drop your PNG file here or click to upload
Only PNG files
No size limit
📖 Complete User Guide
Why Convert PNG to WebP?
WebP is a modern image format developed by Google that provides superior compression compared to PNG and JPG. It offers 25-35% smaller file sizes while maintaining excellent visual quality, supports transparency, and is now compatible with all modern browsers.
Best Use Cases for WebP
- • Modern Websites: Faster loading with smaller file sizes
- • Mobile Apps: Reduced bandwidth usage and faster rendering
- • Progressive Web Apps: Optimal performance for offline-first apps
- • E-commerce: Quick product image loading improves user experience
- • Image-Heavy Sites: Galleries and portfolios benefit from size reduction
Quick Start Guide
Single Image Mode:
1. Click "Single Image" → 2. Upload PNG → 3. Adjust quality (80% default) → 4. Click "Convert to WebP" → 5. Download your file
Bulk Mode (Up to 50 Files):
1. Click "Bulk (Up to 50)" → 2. Upload multiple PNGs → 3. Adjust settings → 4. Select files with checkboxes → 5. Click "Start Converting X Images" → 6. Download all as ZIP
Bulk Mode Features Explained
🎯 Quality Slider (50% - 100%)
What it does: Controls WebP compression level. Higher = better quality but larger file.
Recommendation: 80% for general use (default), 70-75% for maximum compression, 90-95% for near-lossless quality
✨ Transparency Preserved
What it does: WebP natively supports transparency - no background color needed!
Advantage: Unlike JPG, your transparent PNGs stay transparent in WebP format, perfect for logos and graphics
🤖 Auto-Optimize Mode
What it does: Automatically analyzes each image and chooses optimal quality settings. Larger files get lower quality, smaller files get higher quality.
When enabled: Quality slider is disabled (grayed out). Settings are auto-calculated per image.
📐 Batch Resize
What it does: Resizes ALL images to the same dimensions before converting to WebP.
Example: Set 1920×1080 to resize all images to Full HD resolution. Great for creating consistent thumbnails or web images.
🏷️ Batch Rename Pattern
What it does: Automatically renames all converted files using a pattern.
Patterns:
- •
{name}= Original filename without extension - •
{index}= Number: 1, 2, 3... - •
{index2}= Zero-padded: 01, 02, 03... - •
{index3}= Zero-padded: 001, 002, 003... (max supported) - • ⚠️ Do not use
{index4}or higher - unsupported placeholders will cause duplicate filenames and ZIP download issues - • Example:
image_{index3}→ image_001.webp, image_002.webp, image_003.webp
✅ File Selection (Checkboxes)
What it does: Select which files to convert. Unselected files are skipped.
Buttons: "Select All" checks all files, "Deselect" unchecks all, "Remove (X)" deletes selected files from the list
🔄 Drag to Reorder
What it does: Click and drag files to change conversion order and ZIP file order.
Why useful: Organize files before conversion or arrange them in specific order for ZIP download
⏸️ Pause/Resume
What it does: Pause conversion at any time to free up browser resources, resume when ready.
Use case: Pause if your computer is slowing down, or if you need to browse other websites
🔁 Retry Failed Files
What it does: If any files fail to convert, click "Retry X Failed" to try again.
Note: Each file also has individual "Retry" button for granular control
🔄 Convert Again
What it does: After completion, adjust settings and convert the same files again without re-uploading.
Use case: Try different quality settings to find the perfect balance between size and quality
💾 Browser Memory Indicator
What it does: Shows real-time browser memory usage. Turns red when >80% used.
Action needed: If red, pause conversion or reduce concurrent files to prevent browser crash
Privacy & Security
- ✅ 100% Client-Side: All conversions happen in your browser. Files never leave your computer.
- ✅ No Upload: We don't have servers to store your files. Everything is processed locally.
- ✅ No Tracking: We don't track what you convert or collect any personal data.
- ✅ Offline Capable: After first load, works without internet connection.
- ✅ Free Forever: No hidden costs, no subscriptions, no premium tiers.
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PNG to PDF
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