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Marble’s editor is designed to get out of your way. A clean, Notion-like writing experience with no clutter — just you and your content. All metadata and settings live in a collapsible sidebar so you can focus when you need to.

Writing Experience

The editor opens empty and distraction-free. Start typing and your content takes center stage. Formatting options appear when you need them, and disappear when you don’t.

Formatting

Standard formatting options are available inline:
  • Bold and italic text
  • Text highlights and colors
  • Headings (H1 through H6)
  • Bullet and numbered lists
  • Blockquotes
  • Code blocks and inline code
  • Links

Nodes

Beyond text, the editor supports rich content nodes for embedding media:

Images

Upload images directly or pick from your media library.

YouTube

Embed YouTube videos by pasting a video URL.

Twitter

Embed tweets by pasting a tweet URL.

Video

Upload and embed video files from your media library.
The sidebar keeps metadata and analytics tucked away until you need them. Toggle it open to access two tabs: Metadata and Analysis.

Metadata Tab

Control everything about your post without leaving the editor:
FieldDescription
PublishedToggle to publish or unpublish your post. Unpublished posts are hidden from the API.
FeaturedMark a post as featured for special treatment on your site.
Cover ImageSet a featured image for your post.
DescriptionA short summary for SEO and previews.
SlugThe URL-friendly identifier for your post.
AuthorsSelect one or more authors.
TagsAdd multiple tags to organize content.
CategoryAssign a single category.
Published OnSet or schedule the publish date.
AttributionAdd source attribution if needed.

Analysis Tab

The Analysis tab gives you real-time feedback on your writing with text statistics and AI-powered suggestions. Text Statistics:
  • Word count
  • Sentence count
  • Words per sentence
  • Estimated reading time

Content AI

Marble’s Content AI acts like a writing instructor, giving you a readability score and actionable suggestions to improve your content.

Readability Score

Every post gets a score based on the Flesch Reading Ease formula — a widely used standard for measuring how easy a document is to read. The higher the score, the more accessible your writing.

Writing Suggestions

The AI analyzes your content and surfaces suggestions in the sidebar:

Sentence Structure

Break long sentences into two to keep your writing crisp and improve pacing.

Vocabulary

Simplify complex words for quicker reading.

Filler Phrases

Cut softening phrases to tighten flow and maintain focus.

Opening Lines

Get feedback on your opening to hook readers from the first sentence.
Click on any suggestion to highlight the affected paragraph, sentence, or word in the editor. Make changes directly in your content, or ignore suggestions that don’t fit your style.
Content AI works best as a second pair of eyes. Write naturally first, then review the suggestions to polish your content.