How it works
Add your AVIF file. MimiFile checks the format, converts it to HEIC / HEIF, and provides a temporary download when the result is ready.
Convert AVIF to HEIC / HEIF with temporary processing. This page shows the supported input, output and current size limit.
AVIF → HEIC
Drag and drop, paste a file, or browse your device.
Files are temporary and deleted automatically.
Limits: 50 MB per file · 128 MB total per batch.
Add your AVIF file. MimiFile checks the format, converts it to HEIC / HEIF, and provides a temporary download when the result is ready.
AVIF and HEIC / HEIF can differ in compression, metadata, transparency, animation, container or codec support. The result follows the capabilities of HEIC / HEIF.
Current source limit : 50 MB per file. Up to 10 files can be submitted in a batch, subject to the global batch ceiling.
AVIF is accepted here as image/avif. The current source-file limit is 50 MB.
The result is produced as HEIC / HEIF (image/heic). Features unsupported by the destination format cannot be preserved.
Use this when a service, device or workflow accepts HEIC / HEIF but your source file is AVIF.
AVIF and HEIC / HEIF are not interchangeable containers. MimiFile decodes the visible image from AVIF, normalizes it and writes a new HEIC / HEIF file. HEIC is useful in Apple and mobile photo workflows where efficient storage matters, but support outside those ecosystems should be checked.
AVIF is processed as one static image for this conversion. Orientation is applied before the output is written, so the pixels are saved in the displayed orientation. Embedded metadata is stripped from the converted image.
HEIC / HEIF supports compressed image encoding; the final size and visual fidelity depend on the encoder settings and the source content. MimiFile currently writes HEIC / HEIF with an encoder quality setting of 82. HEIC / HEIF can carry transparency, so an alpha channel present in the decoded source can be retained.
HEIC is useful in Apple and mobile photo workflows where efficient storage matters, but support outside those ecosystems should be checked.
Compare the HEIC / HEIF result with the original AVIF before replacing your source, especially when color, transparency, small text or fine photographic detail matters.
The downloaded file uses HEIC / HEIF. Check the result if the source contains transparency, animation, embedded fonts, metadata or other format-specific features.