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DOCM at a glance
DOCM
DOCM arrived in the post-binary Office era as Microsoft split macro-enabled and macro-free documents into distinct extensions, making trust and security policy easier to reason about.
AVIF at a glance
AVIF
AVIF emerged from the Alliance for Open Media's work around AV1 and uses the HEIF family as its structural container, which connects it to both modern web delivery and newer image-container design.
Format comparison
| Feature | DOCM | AVIF |
|---|---|---|
| File type | Document | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2007 | 2019 |
| Inventor | Microsoft | Alliance for Open Media |
| Status | active | active |
| Primary use cases |
|
|
| Vector scaling | Not supported | Not supported |
When to use each format
When to use DOCM
- Your source file is already in DOCM.
- Preserve source expectations before exporting to AVIF.
- DOCM is commonly used in document workflows.
When to use AVIF
- Your target workflow expects AVIF.
- Improve delivery compatibility with AVIF.
- AVIF is commonly used in image workflows.
FAQs
Why convert DOCM to AVIF?
Convert to AVIF when you need compact, high-quality web or app images, especially for responsive delivery, ecommerce, editorial sites, and modern UI assets.
It is a strong target when bandwidth savings and visual quality both matter.
What changes when converting DOCM to AVIF?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting DOCM to AVIF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.