Media and message filters

Choose who may post each media type, link, forward or command in your group with ChatZilla: everyone, verified members only or nobody.

Two sections of the mini app decide what kind of content can be posted: Media Filters and Message Filters. Every item in them has the same three modes:

  • Allow for all users: no restriction (the default).
  • Only for validated users: only members who passed verification may post it. This mode is also what makes verification work.
  • Disable for all users: nobody may post it; every such message is deleted.

When a message is deleted, the bot sends a short notice that names the reason ("@username, photos are forbidden."). The notice is private: only the author of the deleted message sees it (see Bot messages). Every deletion counts as a violation for anti-spam and is written to the event log.

Media Filters

Photos, videos, audio files, documents, video notes (round videos), voice messages, stickers, GIF animations and stories reposted into the chat. Each type has its own mode, so you can, for example, allow photos for everyone and documents for nobody. One catch: Telegram also marks a GIF as a document, so if documents are forbidden, GIFs are deleted too, with a notice saying documents are forbidden.

Message Filters

  • Messages with URLs: any message with a link. The bot also finds links that are hidden under words, written without https:// (like t.me/name or site.com) or placed in buttons under a forwarded post.
  • Bare links: messages that are only a link, with no text.
  • Forwarded messages: messages forwarded from other chats and channels.
  • Bot commands: messages that start with /.
  • Text messages: matches every message, with or without media, so setting it to Disable for all users deletes photos and stickers too.
  • RTL symbols: Arabic, Hebrew and other right-to-left letters.

Bots allowed for mention

This list sits at the bottom of the Message Filters section. Once it has at least one bot, a message that mentions any other bot (@something_bot) is deleted, and the notice lists the bots that are allowed. Add your own bots or partner bots here.

Messages forwarded from a bot on this list are not filtered at all, so posts forwarded from your own bots stay even if they contain links, media or text in another language.

Administrators of the group are never filtered. To test a filter, post from an account that isn't an admin.

Hand the routine to ChatZilla

Add the bot, switch on the rules your group needs, and get back to talking.

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