Selecting and serving content items of different content item types for a content item slot

A system for providing two or more content items of different content item types for a content item slot, the system comprising:

• one or more data processors;
• and
• one or more storage devices storing instructions that, when executed by the one or more data processors, cause the one or more data processors to perform operations comprising:
• receiving a dimensional height and a dimensional width of a content item slot of a resource;
• determining a spatial configuration for content items for the content item slot;
• determining a minimum length for each content item type of a plurality of content item types, wherein the determination is based, at least in part, on the determined spatial configuration;
• selecting a plurality of content items based, at least in part, on the determined minimum length for each content item type and the dimensional height and dimensional width of the content item slot, wherein the plurality of selected content items comprises at least two content items of different content item types;
• and
• outputting data to effect display of the selected plurality of content items.

A computer-readable storage device storing instructions that, when executed by one or more data processors, cause the one or more data processors to perform operations comprising:

• receiving a dimensional height and a dimensional width of a content item slot of a resource;
• determining a minimum length for each content item type of a plurality of content item types and for each spatial configuration, wherein the determination is based, at least in part, on at least one of the dimensional height and the dimensional width of the content item slot;
• determining a spatial configuration for content items for the content item slot, wherein the spatial configuration is based, at least in part, on the determined minimum lengths;
• selecting two or more content items based, at least in part, on the determined minimum length for each content item type and the dimensional height and the dimensional width of the content item slot, wherein the two or more content items comprises a text content item type content item and an image content item type content item;
• converting the text content item type content item into an image content item;
• and
• outputting data to effect display of the converted text content item type content item and the image content item type content item.