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design:character_limits [2021/02/18 11:13] – created mmccdesign:character_limits [2021/06/25 10:09] (current) – external edit 127.0.0.1
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 +====== UI Design Patterns: Character Limits ======
 +
 +Character limits are used on text fields to indicate the maximum amount of characters that can be entered into that field.
 +
 +[[https://codepen.io/mishacreatrix/pen/rNWwMZa| Here is a link to a Codepen Snippet that shows this UI & its interaction ]]
 +
 +===== Looking To Existing Design Patterns To See What Works =====
 +
 +Twitter has a good example of a character limit UI.
 +
 +  * With the older version of Twitter, you see the character limit on the bottom right of the screen, next to the publish button.
 +  * As you start typing, the word allowance decreases.
 +  * When you go over the word limit you're still allowed to keep writing but you're shown in red how much you're over plus the Tweet button is disabled.
 +  * Twitter now has a progress indicator to show how far you are from reaching the character limit.
 +
 +===== Best Practices For Designing A Character Limit UI =====
 +
 +  * Indicate the max number of characters right from the start of the interaction so the user knows what to expect. (grey color text.
 +    * There's nothing worse than being in the middle of typing something, only to find you've reached the character limit and now you have to edit down everything you've typed.
 +
 +
 +  * As you start typing, the number of remaining characters updates and turns from grey to black.
 +    * You could equally display a progress indicator that updates as the user approaches the character limit.
 +
 +
 +  * When you go over the character limit:
 +    * The border changes to red
 +    * A small error icon appears next to the character count that displays the excess number of characters "Maximum 280 Characters (20 too many)".
 +    * Any text that is over this limit will be a different color or be highlighted in some way to visually show the user where they've gone over.
 +    * Any Action or Submit button is disabled to prevent submission.
 +
 +
 +  * Immediate feedback like what's described above will allow the user to easily see what's going on and how to resolve things.
 +
 +
 +  * It's hard to visualize just what 100, 280, or 500 characters look like on-screen, so it's important to highlight this to the user.
 +    * Visual cues like changing the text that's over the limit (mentioned above) convey this.
 +    * Another visual cue is to have the size of the text box be roughly the size that represents the max character limit. This will give users a better sense of the limit.
 +
 +
 +  * Avoid limiting the number of characters a user can type. 
 +    * This prevents users from finishing the flow of what they're trying to write.
 +    * Additionally, some users may be pasting in some text from elsewhere. If there is a limit, some of this text will get cut off causing frustration.