100% Free
No Upload
Bulk Conversion
Bulk HEIF to AVIF Converter — Free, No Upload
Convert multiple HEIF files to AVIF instantly — all in your browser. No file limits, no watermarks, and completely private.
HEIF
AVIF
·
ZIP
Bulk HEIF → AVIF Converter
Select files, convert, download ZIP — all locally
Drop HEIF files here or click to browse
Supports batch selection — convert hundreds of files
HEIF
→ AVIF
ZIP
0 files
Converting
0 / 0
✓ Conversion completed!
All files converted successfully. Click Download ZIP to save them.
Why convert HEIF to AVIF?
convert.dynamic_reason.template_6 convert.dynamic_reason_closing.closing_0
Technical comparison: HEIF vs AVIF
How to use — 3 simple steps
1
Select your HEIF files
Drag & drop or click to choose multiple HEIF images. No file size restrictions.
2
Start the conversion
Click "Convert to :to" — your files are processed locally using WebAssembly. No upload, no waiting.
3
Download ZIP archive
All converted AVIF files are bundled into a single ZIP. One click, everything saved.
Popular use cases for HEIF → AVIF
convert.usecases_groups.group_9.0
convert.usecases_groups.group_9.1
convert.usecases_groups.group_9.2
convert.usecases_groups.group_9.3
💡 Pro tips
- Use WebP/AVIF for web — they load 30‑50% faster than JPEG/PNG
- Use the ZIP download to get all converted files in a single click
- All processing is private — files are never uploaded to any server
Frequently Asked Questions
convert.faq_groups.group_4.0.a
convert.faq_groups.group_4.1.a
convert.faq_groups.group_4.2.a
convert.faq_groups.group_4.3.a