.avif
Cut your image weight in half — batch convert a folder to AVIF (or back)
Convert to and from AVIF. Dramatically smaller files, excellent quality.
Download the free trial: every file converts, keep 10 clean
Convert the whole folder now. Keep 10 results clean, free. $129 once removes the watermark from the rest. No card, no account, no upload. Windows 10 and 11.
- Add your imagesDrag & drop files or entire folders
- Choose direction & qualityTo AVIF or from AVIF, set quality level and output format
- ConvertAll outputs ready in minutes
AVIF saves 30–50% file size versus JPEG at equal visual quality. Batch convert thousands of images in either direction.
AVIF vs. WebP vs. JPEG
| Format | Typical Size | Quality | Transparency |
|---|---|---|---|
| JPEG | 100% (baseline) | Good | No |
| WebP | 25–35% smaller | Equal or better | Yes |
| AVIF | 30–50% smaller | Equal or better | Yes |
HEIC vs AVIF vs WebP vs JPEG: which image format to use (2026)
Windows · free trial · pay once, no subscription
Narrated in English, with subtitles · Short on time? Watch the one-minute version
Works Both Ways
To AVIF
Optimize your images with the most efficient format available. Convert JPEG, PNG, or WebP to AVIF for maximum compression with excellent quality.
From AVIF
Need to edit or share AVIF files? Convert them back to JPEG, PNG, or TIFF for full compatibility with any editor or platform.
Before & After
Before Contenta
Large JPEG and PNG images take up too much space. AVIF files cannot be opened in older software. Manual conversion one file at a time.
After Contenta
Drop entire folders, get optimized AVIF files in minutes. Or convert AVIF back to JPEG/PNG for compatibility. One tool, both directions.
Start Converting Photos Today
Choose the plan that works for you. All plans include every feature.
No subscription trap. Contenta is a one-time purchase — less than 2 months of Lightroom, and it's yours forever.
Frequently Asked Questions
Contenta reads 100+ input formats, including JPEG, PNG, TIFF, WebP, HEIC, AVIF, BMP, GIF, PDF and 30+ camera RAW formats (CR2, NEF, ARW, DNG, RAF, and more), and writes 28 output formats.
There is no limit. Contenta uses multi-core processing to convert thousands of images in minutes. Users regularly process 10,000+ photos in a single batch.
Yes. Contenta supports 30+ RAW formats from Canon, Nikon, Sony, Fuji, Panasonic, Olympus, and more. Full white balance, denoising, and color adjustment controls are built in.
Every feature, every file and no time limit. Each batch converts in full; results carry a small watermark until you pick up to 10 of them to keep clean. Those picks count once per PC, not per batch, and a batch of 500 costs none until you choose. A license ($129 once) removes the watermark from everything you convert.
No. Contenta Converter is a one-time purchase. You pay once and own it forever, including all future updates. No monthly or yearly fees.
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.”
Published by ContentaSoft, Umea, Sweden, developer of Contenta Converter PREMIUM.
Contenta Converter PREMIUM is a desktop application for Windows that batch converts, resizes, renames, watermarks, and processes images in 100+ formats including JPEG, PNG, WebP, HEIC, TIFF, RAW, and PDF.
This software contains no adware, spyware, toolbars, or bundled third-party programs. The installer installs only Contenta Converter PREMIUM.
Conversion, resizing, watermarking and metadata editing run on your computer. The optional AI features (background removal, photo restoration, colorize) send the images you process with them to Google Gemini using your own API key. The software does not collect personal data.
Free trial with every feature and no time limit: every file converts, up to 10 results you pick stay clean and the rest carry a watermark. Lifetime license: $129 (one-time payment, no subscription).
How to Uninstall
Open Windows Settings > Apps > Installed apps, find "Contenta Converter PREMIUM" in the list, and click Uninstall. You can also run the uninstaller from the installation folder or use Control Panel > Programs and Features.
Download size: ~2 MB (web installer). Additional components are downloaded during installation (~300 MB total).