Turn Markdown Into a Presentation-Grade HTML Document: Five Styles, Then Your Own

Open the file, pick one of five presentation styles, and export one HTML page — and when none of the five is yours, change only the values you care about and keep the result as a style of your own. LLMs write raw Markdown because it is cheap; a stakeholder judges a deliverable by how it opens. Everything below runs on your device, with no stylesheet to write and no build step.

1. Which of the five styles fits the reader?

Sapphire Spec suits technical specifications, Stepped Guide procedures, Light Mode paper, and Dark Mode or Dark Spec reading on a screen. Switching changes nothing in the file; the Style menu in the header applies it at once, and an export carries whatever is on screen.

Whatever the style, the same plain GFM renders: tables, task lists, collapsible sections, syntax-highlighted code with a Copy button, live Mermaid diagrams and KaTeX math. The Markdown reference lists every element.

2. How do you make a style your own?

A custom style is a delta over a preset, never a stylesheet from scratch: you press the customize control in the Style menu, change the few things you care about, and inherit everything else. A style of six changed values is still a complete style, and improvements to the preset still reach it.

• Light or dark, on any preset. The first control swaps the whole palette underneath, so "Sapphire Spec, but dark" is one click.
• One accent colour sets six values — the fill, hover, soft tint, strong step and a contrast colour for text on top, computed so an unreadable chip is not a state you can reach.
• Every heading level has its own decoration, colour, size and optional numbered step.
• Preview swaps your document for a sample holding every element a style can change.

Every control, group and option is in the guide: The style customizer.

3. Where does your style travel?

A finished style can be saved in your browser, exported as a .json file, and carried inside every HTML page you export. The third is what lets a recipient see your colours without ever opening Prisment.

1. Save it. Name the style and press Save; it joins the Style menu beside the presets, for every document on this device.
2. Share it as a file. In Settings → Document Style, Export on a style saves a .json you can commit beside your docs or send to a colleague, and Import a style file… brings one in.
3. Send a document. An exported page embeds the style, so it looks the same on a machine that has never seen Prisment.

4. How do you export the document?

Click Export, choose HTML Page, and you get one .html file carrying the document, its style and the diagram runtimes. Send it by email, attach it to a chat, or host it on any static host.

1. Open the file in Prisment — drag it in, or mount the folder it lives in.
2. Pick a presentation style from the Style menu.
3. Click Export in the top navigation bar.
4. Choose HTML Page on the Single File tab and save the file.

That is the one-document case. A whole folder is a different question — independent pages, a browsable wiki, or the sources — answered in sharing Markdown as HTML, a wiki or a PDF.

5. Try it

Open the workspace, switch the Style menu through the five presets on the sample project plan, then press Customize. Free, no account, and nothing you open is uploaded. If the Markdown comes from a terminal agent, mount its folder first; to edit it in the browser, see the Markdown editor with live preview.