Convert HEIC to AVIF online
High-Efficiency Image Container and AV1 Image File solve different problems. Apple's high-efficiency photo format. What your iPhone shoots by default.
The smallest of the lot. Next-gen compression that routinely halves WebP. People convert HEIC to AVIF when the destination, client, or portal expects AVIF and will not accept HEIC.
FilezyAI converts in one upload, then lets you compress to a KB range, resize, or rename without opening another website.
When HEIC to AVIF is the right move
- Sharing with someone whose software only opens AVIF.
- Uploading to a portal that whitelists AVIF extensions.
- Hitting a KB cap after format change (enable compress on this page).
- Renaming outputs to match a required filename pattern.
Format fit: what works best
HEIC input: best for saving space in the camera roll. Limitations: half the web can't open it, which is why people convert HEIC to JPG
AVIF output: best for squeezing photos as small as they'll go for the web. Limitations: encoding is slower, and a few ancient browsers can't read it
Step-by-step conversion
Upload your HEIC file using the box above.
Enable Convert and select AVIF as the target format (pre-selected on this page).
Optional: set Compress min/max KB, Resize dimensions, or Rename pattern if the recipient requires them.
Click Apply changes. Processing runs every enabled step once.
Download the finished AVIF and verify it opens in the target app or portal before sending.
Checklist before you submit
Open the downloaded file locally and confirm it opens. Check file size in properties (KB, not just MB rounded). Verify format extension matches what the portal accepts.
- Correct extension (AVIF)
- File size inside portal KB limit if compress was enabled
- Readable text and faces at screen zoom
- Filename matches portal instructions when rename was enabled
Combine convert with compress or resize
Real uploads rarely ask only for a new extension. They ask for AVIF under 200 KB at 600 px wide with a specific filename. FilezyAI handles that in one job instead of three tabs.
Privacy and cleanup
Converted files are stored temporarily so you can download them, then deleted within two hours. No account is required for everyday free use.
Why FilezyAI runs multiple steps together
Most free converters handle one job per visit: format change, or a vague quality slider, or a crop tool on another tab. Portals rarely ask for just one of those — they publish a checklist (JPG, under 200 KB, 600×600 px, named photo.jpg). FilezyAI applies every toggle you enable in a single server job.
Uploads are removed automatically two hours later. No account is required on the free tier. Pro removes ads and raises file-size limits.
- Set min/max KB instead of guessing compression percentage
- Chain convert, compress, resize, rename, and metadata removal before one download
- Twelve input formats including HEIC, PDF, and Office documents
- AI mode when you prefer plain-English instructions over manual toggles
How to use this tool
- Upload HEIC (drag-and-drop or browse).
- Confirm output format AVIF.
- Add compress, resize, or rename if your use case needs them.
- Click Apply changes once.
- Download your AVIF when the job completes.