[media-types] Re: [IANA #1440116] application/vnd.zo ho-presentation.show registration request

   This registration is acceptable for the vendor tree.

   While RFC 6838 Section 4.4 (https://www.rfc-editor.org/rfc/rfc6838.html#section-4.4) does not require public
   specifications for vendor tree registrations, I recommend that Zoho consider publishing at least a basic format
   specification for this media type given its intended COMMON usage. Public documentation would improve
   interoperability and transparency for recipients of .zshow files.

   Darrel
________________________________
From: Amanda Baber via RT <[email protected]>
Sent: Tuesday, January 20, 2026 8:19 PM
Cc: [email protected] <[email protected]>; Darrel Miller <[email protected]>
Subject: [IANA #1440116] application/vnd.zoho-presentation.show registration request

Hi Darrel,

Sending a reminder for this request from December 30th.

thanks,
Amanda

On Tue Dec 30 17:38:44 2025, sabrina.tanamal wrote:
> Hi Darrel,
>
> Would you be able to review this request for us by January 13th?
>
> Thank you,
> Sabrina
>
> ====
>
> Name: Manivannan Subburaj
>
> Email: [email protected]
>
> Media type name: application
>
> Media subtype name: vnd.zoho-presentation.show
>
> Required parameters: N/A.
>
> Optional parameters: N/A.
>
> Encoding considerations: binary
>
> Security considerations: It is a ZIP package containing binary files,
> image files, audio, video files.
> An zshow presentation of this subtype may contain executable content;
> such executable contents are not invoked by Zoho Show.
> An zshow presentation of this subtype may contain personal
> information,
> but cannnot be encrypted. It may include hyper-links to other objects.
> Implementors should pay special attention to security of resolving
> such external references.
> There are no mechanisms in zshow presentation to verify the integrity
> of presentations (e.g. digital signatures). Users have to rely on
> external
> applications, should such integrity verification be required.
> As with most application types this data is intended for
> interpretation by a program that understands the data on the
> recipient's system. Recipients need to understand that they are at the
> "mercy" of the sender, when receiving this type of data, since data
> will be executed on their system, and the security of their machines
> can be violated.
>
> Interoperability considerations: None.
>
> Published specification: None.
>
> Applications which use this media: Zoho Show
>
> Fragment identifier considerations: None.
>
> Restrictions on usage: None.
>
> Provisional registration? (standards tree only): No
>
> Additional information:
>
> 1. Deprecated alias names for this type: None
> 2. Magic number(s): 50 4b 03 04 as in ZIP
> 3. File extension(s): zshow
> 4. Macintosh file type code: No specified Macintosh file type code(s)
> for Zoho Show.
> 5. Object Identifiers: None
>
> General Comments:
>
> Person to contact for further information:
>
> 1. Name: Manivannan Subburaj
> 2. Email: [email protected]
>
> Intended usage: COMMON
>
> Author/Change controller: Zoho Show Team ([email protected])

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