setStickerSetThumbnail — Botlify Cloud Docs

Use this method to set the thumbnail of a regular or mask sticker set. The format of the thumbnail file must match the format of the stickers in the set. Returns True on success.

Parameters

Parameter	Type	Required	Description
`name`	String	Yes	Sticker set name
`user_id`	Integer	Yes	User identifier of the sticker set owner
`thumbnail`	InputFile or String	Optional	A .WEBP or .PNG image with the thumbnail, must be up to 128 kilobytes in size and have a width and height of exactly 100px, or a .TGS animation with a thumbnail up to 32 kilobytes in size (see https://core.telegram.org/stickers#animation-requirements for animated sticker technical requirements), or a .WEBM video with the thumbnail up to 32 kilobytes in size; see https://core.telegram.org/stickers#video-requirements for video sticker technical requirements. Pass a file_id as a String to send a file that already exists on the Telegram servers, pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data. More information on Sending Files ». Animated and video sticker set thumbnails can't be uploaded via HTTP URL. If omitted, then the thumbnail is dropped and the first sticker is used as the thumbnail.
`format`	String	Yes	Format of the thumbnail, must be one of "static" for a .WEBP or .PNG image, "animated" for a .TGS animation, or "video" for a .WEBM video

Example

PHP — Call setStickerSetThumbnail on Botlify Cloud

<?php
// ── Botlify Cloud .env — auto-injected, never hardcode secrets ──
$BOT_TOKEN     = getenv('BOT_TOKEN');     // Telegram bot token from @BotFather
$ADMIN_CHAT_ID = getenv('ADMIN_CHAT_ID'); // Your numeric admin Telegram user ID
$BOT_USERNAME  = getenv('BOT_USERNAME');  // Bot username without @

$resp = bot('setStickerSetThumbnail', [
    'name' => 'Hello from Botlify Cloud!',
    'user_id' => $userId,
    'format' => 'value',
]);

if ($resp['ok'] ?? false) {
    $result = $resp['result']; // handle the response
}

Botlify Cloud Runtime
Credentials are auto-injected in .env — always load them with getenv(): BOT_TOKEN, ADMIN_CHAT_ID, BOT_USERNAME. Main database: database.db (SQLite, WAL mode). Runtime errors: error.log. Quick test: send to $ADMIN_CHAT_ID. Full details: Runtime Reference.