> For the complete documentation index, see [llms.txt](https://docs.truecaller.com/truecaller-for-business/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.truecaller.com/truecaller-for-business/verified-campaigns/api-webhook-documentation/asset-dimensions/sticky-message-id.md).

# Sticky Message ID

<table><thead><tr><th>Details</th><th width="136.21484375">Template 1 - Text only</th><th width="179.73046875">Template 2 - Image only</th><th>Template 3 - Personalised content with image on left</th><th>Template 4 - Personalised content with image on right</th></tr></thead><tbody><tr><td>PDU Aspect Ratio</td><td>320x100</td><td>320 × 100 px / 640 x 200 px / 960 x 300 px / 1280 x 400 px</td><td>320x100</td><td>320x100</td></tr><tr><td>Title</td><td>40 characters MAX; supports 2 lines</td><td>NA</td><td>40 characters MAX; supports 2 lines</td><td>40 characters MAX; supports 2 lines</td></tr><tr><td>Sub Title</td><td>NA</td><td>NA</td><td>NA</td><td>NA</td></tr><tr><td>CTA</td><td>15 characters MAX; supports 1 line</td><td>NA</td><td>15 characters MAX; supports 1 line</td><td>15 characters MAX; supports 1 line</td></tr><tr><td>Image Dimensions</td><td>NA</td><td>320 × 100 px / 640 x 200 px / 960 x 300 px / 1280 x 400 px</td><td>W 100 x H 100</td><td>W 100 x H 100</td></tr><tr><td>Image File Format</td><td>NA</td><td>.jpeg, .png and .gif supported</td><td>.jpeg, .png and .gif supported</td><td>.jpeg, .png and .gif supported</td></tr><tr><td>Image File Size</td><td>NA</td><td>&#x3C;=150 KB</td><td>&#x3C;=150 KB</td><td>&#x3C;=150 KB</td></tr><tr><td>Redirection</td><td>Landing page on mobileweb browser or app deeplink supported</td><td>Landing page on mobileweb browser or app deeplink supported</td><td>Landing page on mobileweb browser or app deeplink supported</td><td>Landing page on mobileweb browser or app deeplink supported</td></tr><tr><td>Image File Hosting</td><td>NA</td><td>CDN bucket</td><td>CDN bucket</td><td>CDN bucket</td></tr><tr><td>Local Lannguage Support</td><td>Yes</td><td>Yes</td><td>Yes</td><td>Yes</td></tr></tbody></table>


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