[media-types] [IANA #1458211] application/vnd.fiduswri ter.template+zip registration request

Hi Murray,

Revision #3 of 3.

thanks,
Amanda

===

Name: Johannes Wilm

Email: [email protected]

Media type name: application

Media subtype name: vnd.fiduswriter.template+zip

Required parameters: N/A.

Optional parameters: N/A.

Encoding considerations: binary

Security considerations: Identical to those of application/vnd.fiduswriter+zip. A document
template is a ZIP container (https://www.iana.org/assignments/media-types/application/zip) 
holding template definitions as JSON documents (RFC 8259) and template assets. 
Implementations must validate the "mimetype" and "filetype-version" entries, bound 
decompression sizes, reject malformed JSON, and treat template assets as untrusted data 
that is never executed.

Interoperability considerations: Same container convention as application/vnd.fiduswriter+zip: a first,
uncompressed "mimetype" entry puts the media type string at byte offset
38. Existing files carry the legacy string
"application/fidustemplate+zip", which is a deprecated alias; readers
should accept both strings.

Published specification: The Fidus Writer file container format specification (FORMAT.md), at
https://www.fiduswriter.org/spec/FORMAT.md, and the Fidus Writer
document-template format documentation.

Applications which use this media:

- Fidus Writer, which exports and imports document templates
(.fidustemplate files); available in the online service and, from
version 5.0, in the desktop application.

- The Fidus Writer document-template editor
(@fiduswriter/document-template-editor).

Fragment identifier considerations: N/A.

Restrictions on usage: N/A.

Provisional registration? (standards tree only): No

Additional information:

1. Deprecated alias names for this type: application/fidustemplate+zip
2. Magic number(s): - "PK\003\004" (50 4B 03 04) at byte offset 0 (ZIP local file header), then - "application/fidustemplate+zip" or "application/vnd.fiduswriter.template+zip" at byte offset 38 (the content of the first, uncompressed "mimetype" archive entry).
3. File extension(s): fidustemplate
4. Macintosh file type code: N/A.
5. Object Identifiers: N/A.

General Comments: The media type describe the file format itself and are independent of how
the application is delivered: Fidus Writer 5.0 is distributed both as an
online service and as a desktop application, and `.fidustemplate` files are
interchangeable between them.

Person to contact for further information:

1. Name: Johannes Wilm
2. Email: [email protected]

Intended usage: COMMON

Author/Change controller: Fidus Writer Project, Lund Info AB

On Wed Aug 19 01:18:24 2026, [email protected] wrote:
> On Mon, Aug 17, 2026 at 5:41 PM Amanda Baber via RT <
> [email protected]> wrote:
> 
> > This is #3 of 3.
> >
> 
> Same general issues as #1, namely inappropriate use of MUST/MUST NOT in a
> template.
> 
> -MSK

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