# Discourse Signatures

**URL:** https://meta.discourse.org/t/discourse-signatures/42263
**Category:** Plugin
**Tags:** official, signatures
**Created:** [April 8, 2016, 9:39pm UTC](https://meta.discourse.org/t/discourse-signatures/42263 "2016-04-08T21:39:19Z")
**Posts on this page:** 1
**Showing post:** 213

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### Author: ![jamie.wilson](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jamie.wilson/32/185466_2.png) [@jamie.wilson](https://meta.discourse.org/u/jamie.wilson)
#### Post date: [March 12, 2026, 7:56pm UTC](https://meta.discourse.org/t/discourse-signatures/42263/213 "2026-03-12T19:56:09Z")

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I’ve merged [the above PR](https://github.com/discourse/discourse-signatures/pull/105) from @falco, so the plugin now officially contains:

> [@](#):
>
> - Group-based restriction (`signatures_allowed_groups`) — server-side enforced
> - Category-based display (`signatures_show_in_categories`)
> - First-post-only mode (`signatures_first_post_only`)
> - Signature length cap (`signatures_max_length`) and image height limit (`signatures_max_image_height`)
> - URL validation hardened to HTTP/HTTPS only, max length reduced to 2048
> 
> All defaults are backward-compatible.

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_[View the full topic](https://meta.discourse.org/t/discourse-signatures/42263)._