There are a lot of useful symbol that are present in fonts on the Internet. You can find a lot of tables with ASCII symbols and alt codes. For example left [alt]+[numpad 1] gives a smiley face (☺), [alt] and typing 16 gives you ►.
Lets see some basic special characters. They are consecutive characters from the alt codes [alt]+1,2,3 and so on: ☺ ☻ ♥ ♦ ♣ ♠ • ◘ ○ ◙ ♂ ♀ ♪ ♫ ☼ ► ◄ ↕ ‼ ¶ § ▬ ↨ ↑ ↓ → ← ∟ ↔ ▲ ▼
However, I was unable to find a comprehensive list of all the characters you can make. So I made a simple script that iterates and spits out next characters using HTML ampersand symbol notation. Using symbols like these works in most text fields on the Internet. Below are example symbols and at the bottom of this post is a link to all 100000 of symbols.
Symbols that I found:
Some colorful pictures and emoji:
Breaking the Internet
Not every site handles all special symbols like these.
Tweeter is a popular social media website on which you can share short tweets with other users. Back in 2014, someone discovered an exploit in the text box where you write your tweet, that a emoji breaks the text filter. It allowed him and some other people to make joke posts that spread viral. Each person started to retweet that without even knowing they did.
Other guy accidentally broke a bank’s website by entering emojis into his account name.
WordPress doesn’t handle special characters too! By writing this post with all the special characters, I discovered a bug in the post editor. Each html special character is changed when I save and edit the post. I actually removed all these symbols from this page because it was really annoying.
There were many interesting bugs and exploits regarding special characters, enough for a separate blog post.
To combat performance issues connected with concatenating and displaying thousands of different characters I decided to create many divs to create tree-like hierarchy. I also track how long it takes for the script to generate a character and generate them in batches in intervals to prevent browsers from freezing. I made a slider for changing font size, but it was working slow beyond reason. More performance improvements are needed before it will work.
Play with it yourself:
► Website containing 100000 symbols: tymski.github.io/symbols
► Github repository with the source code: github.com/Tymski/symbols