Technical Specifications

This section outlines the key technical guidelines to consider when preparing materials for an RCS campaign.

Following these recommendations ensures that your assets display correctly across different devices.

Dimensions and File Formats

Component	Dimensions / Aspect Ratio	Supported Formats
Video (Standalone Message)	16:9 or 9:16	h263, m4v, mp4, mpeg, mpeg4, webm
Rich Card (Media)	Suggested: 770 × 335 px (for horizontal media)	Images: GIF, JPG, JPEG, PNG Video: h263, m4v, mp4, mpeg, mpeg4, webm
Carousel (Media)	Suggested: 605 × 452 px (4:3 aspect ratio)	Images: JPG, JPEG, PNG
File (Audio / PDF)	Not applicable	Audio: MP3, WAV Document: PDF

Character Limits and File Sizes

Character Limits

Component	Maximum Character Count (UTF-8)
RCS Basic / Lite	160 characters
Single Text (description)	1,000 characters
Rich Card / Carousel (title)	100 characters (24 recommended)
Rich Card / Carousel (description)	1,000 characters (77 recommended)
Suggestions (button text)	25 characters

File Sizes

Component	Maximum / Recommended Size
Video (Standalone Message)	Maximum: 20 MB
Audio File	Maximum: 20 MB
Rich Card (Image)	Recommended max: 4 MB
Rich Card (Video)	Maximum: 5 MB
Document (PDF)	Recommended max: 5 MB
Graphics in Cards (General)	Recommended size: 40–100 kB

Safe Area (Padding)

Due to variations in device displays and system overlays, key graphic elements (such as logos, text, or main product visuals) should be placed within the defined safe area.

This ensures they remain fully visible across all screen types.

For Rich Card (single card):

• Top and bottom margins: 20 px

• Left and right margins: 180 px

For Card Carousel:

• Top and bottom margins: 121 px

• Left and right margins: 75 px