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Alternatives | 8 min read | 2026-08-27 | By Variant Team

Marp vs Reveal.js: Choosing the Right Developer Slide Tool

Marp vs Reveal.js compares markdown-first speed with full HTML control. Learn which tool fits text-heavy decks, custom layouts, exports, and CI.

Author: Variant Team. Variant is built by a small team working on HTML-native presentation tools, MCP workflows, and agent-editable decks.

Marp and Reveal.js both let developers keep presentations close to code. They differ in how much presentation code they ask you to own.

Marp starts with plain markdown and turns it into slides. Reveal.js starts with an HTML presentation runtime and gives you control over its behavior. Your choice comes down to whether fast authoring or custom layout matters more.

#Quick answer

Choose Marp when a deck is mostly text, belongs in a repository, and should export to PDF, HTML, or PPTX with little setup. Choose Reveal.js when the deck needs custom HTML layouts, plugins, transitions, or interactive behavior. For a text-heavy internal developer deck, Marp is usually the fastest route to a good first draft.

#Marp vs Reveal.js at a glance

Both tools fit a code-based workflow, but they put the complexity in different places.

Marp keeps the authoring model narrow. That constraint is useful when slides are mainly headings, paragraphs, code, diagrams, and a few images. Reveal.js keeps the browser open to you. That freedom is useful when the presentation needs to act more like a purpose-built web experience.

#How Marp keeps slide authoring simple

A Marp deck is a markdown file. A line containing three hyphens separates one slide from the next:

## Release review

What changed in this release and what the team learned.

---

## Results

- Build time fell after the dependency cleanup.
- The new review step caught two regressions.

That source is easy to read without opening a presentation app. It also produces useful Git diffs. A reviewer can comment on wording in the same place they review code.

Marp supports directives in front matter, while CSS themes control the visual system. The split is easy to understand: markdown holds the story, directives set presentation-level choices, and CSS sets appearance. The VS Code extension adds live preview, so an author can edit text and see the rendered slide beside it.

The CLI makes Marp a practical choice for headless rendering. A team can keep a deck in a repository and generate a PDF during CI. Marp also exports HTML and PPTX.

This workflow is especially good for recurring engineering reports. The source stays small, and changes remain reviewable.

The cost appears when the slide stops matching markdown's document structure. Markdown is good at headings, lists, code blocks, and linear content. It is less natural for an asymmetrical composition with precisely positioned labels, overlapping elements, or a custom navigation idea. HTML and CSS can provide an escape hatch, but repeated escape hatches weaken the reason to choose Marp.

If every second slide needs custom markup, the deck is no longer simple. At that point, Reveal.js is usually the clearer tool.

#How Reveal.js trades simplicity for control

Reveal.js represents slides as HTML sections. You work directly with the browser's layout model, which means you can structure each slide for its content instead of fitting every idea into a markdown shape.

That matters for conference talks and product demonstrations. Full CSS control gives you precise typography, grids, layers, and responsive behavior. Fragments can reveal individual elements as the presenter advances. Transitions control movement between slides. Plugins and speaker notes cover needs that go beyond static pages.

Reveal.js is the better answer when interaction is part of the message. If a slide needs a working browser demo, unusual navigation, or a layout that changes through several states, direct access to HTML, CSS, and the presentation runtime is valuable.

The tradeoff is ownership. A Reveal.js deck is a small web project. You maintain its markup, styles, assets, themes, dependencies, and build or hosting choices. That is reasonable for an important public talk. It can feel excessive for a weekly status update.

The project model also asks authors to think like frontend developers. A non-developer may be able to suggest copy changes, but direct editing is less inviting than changing a markdown paragraph or moving an object on a visual canvas. For a broader look at that boundary, read Reveal.js alternative for visual HTML slide editing.

#Rendering presentation files in CI

CI rendering is a genuine reason to choose Marp. A markdown deck can live beside the material that produces it, such as release notes, architecture records, or training examples. The Marp CLI can render a current PDF whenever the source changes.

That creates a clean workflow:

1. Authors review the markdown source.
2. CI renders the distributable presentation.
3. The generated PDF or HTML becomes the artifact people present or share.

The approach reduces stale exports because the repository contains the source of truth. It also makes deck updates part of an existing pull request process.

Reveal.js can also run through automated build and deployment systems. The difference is the amount of web project machinery you choose to maintain. If the only required artifact is a PDF of a text-heavy report, Marp is the more direct option. If the published HTML experience is the real deliverable, Reveal.js gives that experience more room to grow.

#Where both tools need help

Marp and Reveal.js assume that someone is comfortable working in source files. Neither gives a non-developer a conventional visual editing canvas by itself. That can slow review when someone wants to adjust spacing or move a chart without opening a code editor.

AI editing creates a related problem. An agent can change markdown, HTML, and CSS, but source access alone does not give it a presentation-aware loop. By themselves, Marp and Reveal.js do not expose deck tools that let an agent fetch one slide, render that slide, inspect the result, make a scoped correction, and preserve deck history. You can build such a pipeline, but you own it.

Variant takes a different approach. Every slide is HTML and CSS, while the product adds a visual canvas, comments, version history, share links, and exports to single-file HTML, PDF, PPTX, and JSON. Variant's MCP tools include slide.get, slide.edit, slide.preview, and deck.export, so an agent can work through presentation-specific operations.

That bridge matters when developers and non-developers need to work on the same deck. An agent can edit code-native slides, while a teammate adjusts the result visually. The comparison between Variant and Marp covers that workflow. If markdown is your starting point, see how to make an AI slide deck from markdown.

Variant is not automatically better. For a short, text-heavy internal deck, Marp gets to the first draft faster than both Reveal.js and Variant. For a highly custom interactive talk, Reveal.js offers more direct control over the runtime than a managed editor. Variant fits the middle case, where code-native authoring, visual editing, agent previews, and common exports all matter.

#How to decide

Choose Marp when:

• Most slides follow a simple document structure.
• The markdown file should be easy to review in Git.
• PDF, HTML, or PPTX export is a core requirement.
• CI should produce the current deck after each change.
• Time to first draft matters more than custom composition.

Choose Reveal.js when:

• The deck needs layouts that are easier to express in HTML and CSS.
• Fragments, transitions, plugins, or browser behavior are central to the talk.
• You are comfortable maintaining a web project.
• The HTML presentation itself is the main artifact.

Choose Variant when:

• An AI agent and human collaborators both need to edit the deck.
• A visual canvas, comments, share links, or version history matter.
• The agent needs a rendered slide preview as part of its editing loop.
• You want HTML source with PDF, PPTX, JSON, and single-file HTML exports.

For a broader format decision, PPTX vs HTML for AI decks explains why working source and handoff format do not have to match.

#Related reading

• Reveal.js vs Slidev
• Why HTML is a better AI slide format than images
• Variant documentation

#FAQ

#Is Marp better than Reveal.js?

Marp is better for text-heavy presentations that should remain simple markdown files and render cleanly in CI. Reveal.js is better when custom HTML layouts, plugins, transitions, or interactive browser behavior matter more than minimal setup.

#Can Marp export to PowerPoint?

Marp can export presentations to PPTX, as well as PDF and HTML. PPTX export makes Marp useful when markdown is the working source but PowerPoint is the required handoff format.

#Does Reveal.js use markdown?

Reveal.js is built around HTML sections and a browser presentation runtime. The key reason to choose Reveal.js over Marp is direct HTML and CSS control, especially when a deck needs custom layout or interaction.

#Which tool is better for Git and CI?

Marp is usually the simpler choice for Git and CI because the source is plain markdown and its CLI supports headless rendering. Reveal.js can also fit automated workflows, but the team maintains a fuller web project.

#Which tool is easier for non-developers?

Neither Marp nor Reveal.js is designed around a conventional visual canvas. Marp's markdown is easier to edit for people comfortable with plain text, while Variant is a better fit when non-developers need direct visual editing and comments.

#When should I use Variant instead of Marp or Reveal.js?

Use Variant when the deck needs HTML and CSS source, visual editing, collaboration, common exports, and presentation-specific MCP tools in one workflow. Do not use Variant for the fastest possible text-only draft or when complete control over a custom presentation runtime is the main goal.

#The short version

Marp wins when markdown simplicity, clean exports, and CI rendering define the job. Reveal.js wins when custom layout and browser interaction define the presentation. Variant fits teams that need code-native slides plus a visual editor and an agent preview loop. For a text-heavy internal deck, start with Marp. For a custom interactive talk, choose Reveal.js.