When can a user of bitcoin talk expand their signature?

[programmer11]

Is there a chart somewhere that lists the maximum signature capabilities according to number of posts or some other criteria?

[TryNinja]

Signature restrictions

There are restrictions on signatures, based on your activity/rank.

- Newbie: No styling (including links) allowed. Max 50 characters.
- Jr. Member: Max 150 characters.
- Member: Links allowed. Unlimited length.
- Full: Color allowed.
- Sr. Member: Size allowed
- Hero: Background color allowed

If you don't know how the ranking system works: Forum ranks/positions/badges

[hugeblack]

Increase the signature area/style associated with the rank which is associated with a number of factors:
 - number of activities: For each rank a certain number of activities, this activities depends on the pots and time and the maximum activities is 14 per 2 weeks. for more read -----> https://bitcointalk.org/index.php?topic=2766177.0
 - merit: Each each has a merits.  For more read ----->  https://bitcointalk.org/index.php?topic=2818350.0
About signature area/styles follow this

RANK	LINKS	STYLING	BOLD LETTERS	ITALICIZED	UNDERLINED	TABLES	MAX. CHARS.
Newbies	no	no	no	yes	yes	no	50
Jr. Members	no	no	no	yes	yes	no	150
Members	yes	no	no	yes	yes	no	4000
Full Members	yes	font color, font face	yes	yes	yes	no	4000
Sr. Members	yes	yes (without 'glow')	yes	yes	yes	yes	4000
Hero/Legendary.Members	yes	yes	yes	yes	yes	yes	4000