Bulk Convert WebP, AVIF, HEIC - Optimize Images for PageSpeed
Convert entire image directories to WebP or AVIF in one batch. Cut page weight by 60-80%. No cloud uploads, no per-image limits.
Used by web developers and agencies to hit 90+ PageSpeed scores.
Download Free — 30-Day Trial, No Credit CardFree 30-day trial. Then $129 once - no subscription, unlimited images.
How It Works
Add your images
Drop entire /images folders - PNG, JPEG, BMP, TIFF, HEIC, any format.
Set format and quality
Choose WebP, AVIF, or JPEG. Set quality target for optimal size/quality balance.
Convert
All images converted and compressed. Upload to your server. PageSpeed improved.
Conversion Savings
| Conversion | Typical Savings | Note |
|---|---|---|
| PNG → WebP | 60–80% | Best for screenshots, diagrams, graphics with transparency |
| JPEG → WebP | 25–35% | Good for photos - smaller files with equal visual quality |
| PNG → AVIF | 70–90% | Maximum compression - excellent for modern browsers |
| HEIC → JPEG | — | Convert iPhone photos to universal web format |
| HEIC → WebP | 10–20% | Modern format to modern format - best of both worlds |
| BMP/TIFF → WebP | 90%+ | Legacy formats shrink dramatically - update old sites fast |
Before & After
Before Contenta
Upload images one-by-one to TinyPNG. Wait. Download. Re-upload to server. Hit the 500-image monthly limit. Try another tool. Repeat.
After Contenta
Drop the entire /images folder into Contenta. Choose WebP at quality 80. Click Convert. Upload the output folder. PageSpeed score jumps 30 points.
What Our Users Say
“I have been using Contenta Converter for years and it has saved me countless hours of work. Highly recommended!”
“Simple, fast, and does exactly what it promises. The batch processing is incredibly efficient.”
“Best image converter I have found. The RAW support and metadata handling are top-notch.”