Here is a list of online tools for beginners that need aid in their signature designs or just wanna mess around with BBCode:

https://www.ascii-art-generator.org/ - This free online Ascii Art creator allows you to convert images to color or monochrome Ascii Art. You can also convert text to Ascii Banners.

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http://absitomen.com/index.php?topic=331.0 - BBCode Color List

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https://www.degraeve.com/color-palette/ - Enter the URL of an image to get a color palette that matches the image. This is useful for coming up with a website color scheme that matches a stock photo a client wants to work with.

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http://www.virtualteen.org/forums/showthread.php?t=28157 - Some BBcode special characters

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https://htmlcolorcodes.com/ - Get HTML color codes, Hex color codes, RGB and HSL values with color picker, color chart and HTML color names.

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https://morgh.us/pixelate/ - Pixel Profile Generator

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https://cryptoplanet.club/basic-bbcode-tutorial/ - BBCode tutorial for beginners

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https://asktom.cf/index.php?topic=1727100.0 - Roslinpl signature tutorial

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http://www.webestools.com/stylish-text-generator-nickname-message-msn-facebook-windows-live-messenger-text-accents-effect-ascii-text.html - Stylish text generator

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https://fsymbols.com/generators/carty/ - Generate BIG text art signs
https://fsymbols.com/text-art/ - ASCII Text Art

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https://www.copypastecharacter.com/symbols - Some more symbols

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http://graphemica.com/unicode/characters/page/1 - Unicode Characters

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https://www.hobo-web.co.uk/character-counter/ - A tool to count characters in case you don't wanna pass the 4000 character limit for signatures here

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http://www.i2symbol.com/ascii-art - Convert your free hand drawing into ASCII art to spice up your comments on youtube, facebook, and twitter.

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https://highintegritydesign.com/tools/tinter-shader/ - Used to obtain cool shades for your colors - suggested by hugeblack

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https://manytools.org/hacker-tools/convert-image-to-ansi-art/ - Convert image to ASCII art - suggested by hugeblack


NOTE: The best way to make signatures is to draw them yourself, of course, some tools here might make your life easier but you will definitely not get, by using them, the final product.

Nice tuts and I just checked the tool at signaturion and the preview is not what signature should look like, it is all stretched and in big size, I think it doesn't take account of size code

[1] I checked the thread, seems to me the guy doesn't know how to fix it though.
[2] I knew about it, I forgot to add it though
[3] Nice one, I will add it with number [2] to the post
[4] Was already included in the post