Page Updated:   2022-04-06

This is related to Editing(coding) Character Sheets, which require Pro info to be able to use. Main Page: Building Character Sheets

These are general best practice guidelines to help increase consistency among sheet authors, in order to make more maintainable code repository for the community. Some of these are generic, while others are specific to how the Roll20 Character Sheet Framework functions.

Attributes/Inputs

• Attribute names should be lowercase. For the sake of consistency & to avoid some quirks related to sheetworkers, it's best to always give lowercase attribute names, such as

• RPGs have weird words. Utilize spellcheck="false" for text inputs and textareas to prevent the browser from indicating spell errors.

• Use fewer Attributes & Inputs. The more attributes and inputs you have the slower the sheet will load. This is not a concern for the average sheet but robust sheets such as the D&D 5E Sheet by Roll20- or the Pathfinder (Community)-sheets large amount of attributes & inputs can lead to performance issues if left unmanaged. If sheetworkers need to process many attributes often, or the game relies on characters having many entires in Repeating Sections, it might impact performance.

• Spans over disabled inputs. Attribute-backed spans are more efficient than disabled inputs.

Sheetworkers & Roll Templates

• Avoid Asynchronous cascades. Whenever possible avoid asynchronous cascades for sheet workers. An example of this is, getAttrs -> calculations -> setAttrs -> getAttrs -> calculations -> setAttrs… A better way to do this is getAttrs for everything you'll need then do all necessarily calculations before finally using a single setAttrs.

• Use Sheetworkers over Auto Calculated attributes. Sheetworkers only trigger when events happen ,which improves performance for character sheets over auto calculated attributes since these events occur less frequently.

• Place Roll Templates and sheetworker code at bottom of the html page It's considered best practice to place JavaScript at end of pages. This also means the rolltemplates won't mess with the Preview Pane if you're using the Sheet Editor.

Other Roll20-specific

• Avoid !important. Whenever possible try to avoid using !important in CSS as it can create a cascading effect of needing to use ever more !important to fix things.

• (Applies to Legacy Sheet, not CSE)Don't include sheet- for CSS Class names in the HTML. sheet- is automatically added to the CSS classes in the HTML, so it's redundant to repeat it there. Leaving it out also increases readability if lots of classes are used.
  • For example in the HTML, instead of class="sheet-strRow", just do class="strRow".
  • WARNING: the above is untrue for classes of <rolltemplate> elements. For those, you do need to specify the full class name (i.e. starting with sheet-) or your rolltemplates will simply stop working.

• Include a minimum width. Including a minimum width on the sheet will help with resizing. Try to not exceed the default width when a sheet opens for the first time, approximately 800px-900px. Character sheets with an NPC view may be smaller and elaborate PC sheets are sometimes bigger.

• Use Supported Fonts. Either use the five named fonts (Arial, Patrick Hand, Contrail One, Shadows Into Light, and Candal), or Google Fonts. Roll20 also comes with some Icon Fonts, and it's possible to us Google's Material Icons.

• Use ^{ } for translations in button macros. In your button macros using ^{key} will insert the appropriate key from the appropriate language's translation.json. This makes roll templates more adaptable to other languages, and avoid hardcoding

See Also

• Character Sheet Development/Restrictions
• Character Sheet Development/Common Mistakes