Basic & Closing Slides

The Basic shelf of the slide-type picker holds the slides most decks are built from: an opener, section breaks, text, lists, quotes and callouts. The Other shelf adds the slides that close a deck and a free-form HTML slide. Every field, with its limits, is in the slide-type reference.

Title Slide

The opening slide of your presentation.

Field	Required	Description
title	Yes	Main title (max 120 chars)
subheading	No	Subtitle (max 160 chars)
meta	No	A line for presenter, date or event (max 160 chars)
titleBlockAlign	No	left or center
logoCorner	No	Corner for the theme logo: left or right (default)
background	No	lime or mist

• Theme logo - The slide shows the theme’s title logo, or its main logo when the theme has no separate title logo.
• Background image - Use the slide background fields that every type carries (slideBgImage with its overlay and text-colour options).

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Section Title

Section dividers that break your presentation into parts. In the data this is chapter-title-slide.

Field	Required	Description
title	Yes	Section title (max 140 chars)
subheading	No	Short description (max 160 chars)
layout	No	Vertical position of the title: top, center (default) or bottom
titleBlockAlign	No	left or center

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Text Slide

The workhorse slide for text: a heading with a Markdown body (content-slide).

Field	Required	Description
title	Yes	Slide title (max 120 chars)
subheading	No	Subtitle (max 200 chars)
body	Yes	Body text in Markdown (max 3000 chars)
layout	No	one-column (default) or two-column
density	No	Text size: auto or compact
asideVariant, asideText	No	A short aside next to the body: note, tip or warning
actions	No	Up to three buttons
background	No	lime or mist

The body supports bold, italic, bulleted and numbered lists, links, inline code and blockquotes. Each action button has a label (max 40 chars), a URL and a style: primary, secondary or outline.

The layout switcher also offers image layouts. Choosing one converts the slide to an Image + text or Images + text slide and keeps your text.

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List

A bulleted or numbered list of 2 to 8 items (list-slide). The picker offers it twice, as Bullet list and Numbered list.

Field	Required	Description
title	Yes	Slide title (max 120 chars)
subheading	No	Subtitle (max 160 chars)
variant	No	bullets or numbers
items	Yes	2-8 items, each a title (max 80 chars) and an optional single-line text (max 120 chars)
layout	No	auto, one-column or two-column
density	No	auto, comfortable or compact
asideVariant, asideText	No	A short aside: note, tip or warning
headerAlign	No	left or center

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Quote

A pull quote with attribution.

Field	Required	Description
quote	Yes	The quotation (max 400 chars)
authorName	Yes	Who said it (max 80 chars)
authorTitle	Yes	Their role or title (max 120 chars)
authorImage1, authorImage2	No	Up to two portrait photos, each with alt text
quotes	No	Up to two extra quotes, each with its own attribution
quoteAlign	No	left or center

With extra quotes, the slide switches to a stacked layout with alternating alignment. For one insight without a named speaker, use the Callout.

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Callout

One insight, warning or definition on a slide of its own. The variant picks the accent and icon, and tells the audience how to read the slide. The picker offers each variant as its own tile: Key insight, Warning, Definition, Note and Tip.

Field	Required	Description
variant	Yes	insight (default), warning, definition, note or tip
label	No	Eyebrow text (max 80 chars). Leave it empty and the slide shows the variant’s own word (“Key insight”, “Warning”) in the deck’s language. For definition, put the term being defined here
body	Yes	One or two sentences in Markdown (max 600 chars). For definition, the meaning of the term
source	No	Where the insight or definition comes from (max 160 chars)
background	No	lime or mist

Use it sparingly; a callout every third slide stops being a contrast. For a pull quote with a named speaker, use the Quote slide. For two options weighed against each other, use the Comparison slide.

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Closing and Custom Slides

These three sit on the Other shelf of the picker.

End / Contact

A closing slide with contact details (end-slide).

Field	Required	Description
title	Yes	Closing title (max 120 chars, default “Thank you!”)
body	No	Short Markdown text (max 500 chars)
contactName, contactEmail, contactPhone, contactUrl	No	Contact details
social1Label, social1Url, social2Label, social2Url	No	Up to two social links
background	No	lime or mist

Payoff

A closing beat with the theme’s payoff logo (payoff-slide). It has no fields of its own: it shows the payoff logo from the theme, or the main logo when the theme has none, on the theme’s lime surface. The picker always lists it last.

Custom HTML

Your own HTML and CSS, for anything the other types do not cover (custom-html-slide).

Field	Required	Description
html	No	The slide’s markup (max 20,000 chars)
css	No	Styles, scoped to this slide (max 10,000 chars)
background	No	lime or mist

• Sanitized on every render - Scripts, inline event handlers, iframes, objects, embeds, forms and external stylesheets are removed, so no JavaScript runs. SVG and MathML are kept.
• Scoped CSS - Styles apply to this slide only and cannot restyle the rest of the deck.
• Who can author it - Only users allowed to edit custom HTML can insert or edit this slide. Everyone else can still view, present and export it.

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Best Practices

• Keep titles concise; the title slide and section titles carry the deck’s outline.
• Use section titles consistently, so the audience can tell where one part ends.
• Limit content per slide. Split a text slide before switching it to compact.
• Save callouts for the one thing the audience must take away.

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Related

• Slide Types Overview
• Slide-type reference
• Themes
• Basic Editing