HEIFS Image — A .heifs file is a HEIFS Image. It is a raster or vector image format used for photos, web assets and design work.
Quick facts
What is .heifs
A .heifs file is a HEIFS Image. It is a raster or vector image format used for photos, web assets and design work.
In the mime-db registry it maps to image/heif-sequence. When serving .heifs over HTTP, set the Content-Type header as shown in Developer info below.
Related entities: it maps to image/heif-sequence — and is delivered over HTTP via the Content-Type header.
How to open .heifs files
Developer info
When served over HTTP, responses should set the following header:
Content-Type: image/heif-sequence
Common software that reads/writes .heifs:
Relation chain
Related extensions
Related MIME types
Common uses
How to edit .heifs files
How to create .heifs files
Frequently asked questions
Common options include Photoshop, GIMP, Paint. You can also open many of these files with built-in viewers or a browser.
Create a new file in any text editor or the app that owns the format and save it with the .heifs extension.
image/heif-sequence is the media type identifier used for .heifs files during network transfer (for example in the HTTP Content-Type header).
Sources & standards
Updated 2026-08-18
Explore this reference