The IBM API Connect Developer Portal allows administrators to configure which file types can be uploaded. By default, the list of permitted file extensions for images includes several common formats. Among the options provided, both JPG (Joint Photographic Experts Group) and GIF (Graphics Interchange Format) are included in this default configuration, making them supported formats for use in portal content, theming, and branding.

1. IBM Documentation for API Connect v10.0.x: Configuring the file settings for the Developer Portal. This document specifies the default permitted file extensions. In the section describing the "Permitted file extensions" field

the default list is provided as: jpg jpeg gif png txt doc xls pdf ppt pps odt ods odp. This explicitly includes jpg and gif.

Source: IBM Documentation

API Connect Version 10.0.x

Administering the Developer Portal > Configuring the file settings for the Developer Portal.