3BL Content Editor: Formatting, Media & HTML Specifications

2026-04-09 11:01:43

(MENAFN- 3BL) 3BL Content Editor: Formatting, Media & HTML Specifications

The 3BL Editor is a structured, HTML-based publishing environment. Formatting is not decorative - it is a technical decision that affects how content is rendered, indexed, and distributed. This guide provides a comprehensive overview of how the editor works, what it supports, and how to maximize performance and discoverability using structured content.

Character Limits

Every field in the editor has a defined limit that affects how your content previews across channels - from email inboxes to aggregator feeds. These aren't soft guidelines; exceeding them causes truncation downstream.

Character Limits

Field	Limit	Notes
Headline	255 characters	Target 60 for search display
Subheadline	255 characters	Doubles as SEO meta description
Body	No limit	Full article content
Short teaser	280 characters	Used in email distribution previews

Writing a headline under 60 characters isn't just an SEO best practice - it's the threshold at which most search engines display the full title without truncation. The 255-character field gives you flexibility, but 60 is the practical target.¹

Supported HTML Elements Text Structure & Semantics

Well-structured content starts with the right tags. Headings, paragraphs, and text formatting elements do more than control appearance - they signal hierarchy to the systems that distribute and index your content.

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Lists

When sequence matters, use an ordered list:

Lead with your most important claim in the headline and H1 Support it with evidence in modular, self-contained sections Close with a clear takeaway or call to action Keep each section focused on one idea

When information is parallel but not sequential, use bullets:

Semantic headings at every major section break Descriptive hyperlink anchor text Alt text on every image Embeds placed within the body, not isolated at the top or bottom Links

The tag supports href, alt, target, title, and rel attributes. Use descriptive anchor text for both accessibility and search performance. Read more about 3BL's framework for optimizing content in our 2026 LLM and Generative AI Writing Guide.

Content Sanitization & Unsupported Elements

The editor automatically removes unsupported or unsafe elements on save. The most common ones teams run into:

(except for specific oEmbed use cases)

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