Platforms: LinkedIn

Guides LinkedIn post copy creation and optimization. Use for generating publish-ready professional content. Suitable for copy agents and design agents (image specs).

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Output: Publish-Ready Copy

This skill enables agents to generate LinkedIn post copy optimized for engagement. Output includes character-counted text and structure for the "See more" threshold.

Character Limits

Type Limit Notes

Post 3,000 characters Optimal: 1,300→,600

First line (critical) 210–235 chars Visible before "See more"; 60–80% decide here

Short posts 100→00 chars Polls, announcements, quotes

Optimal Length by Content Type

Type Characters Use

Short 100→00 Polls, announcements, quotes

Medium 300→,200 Case studies, tips, BTS

Long 1,200→,000 Thought leadership, analysis

Sweet spot 1,300→,600 Highest engagement

Avoid

2,000 ~35% engagement drop

First Line (Hook)

• Place key message in first 140 chars

• Strong openings: Specific results, pain points, bold claims, surprising stats

• Avoid: Vague teases, hashtag-first, generic greetings

Image Specs (for Design Agents)

Format Dimensions Use

Single image 1200×627 (1.91:1) Feed; link previews

Square 1200×1200 Single image

Carousel Up to 20 images Multi-image post

File →MB; JPG/PNG Native uploads perform better

Vertical Preferred 88% browse on mobile

Best Practices

• Mobile-first: 88% users on mobile

• Polls & PDFs: Highest reach

• Post frequency: Weekly minimum for companies

• Alt text: Add for accessibility

Output Format

When generating LinkedIn copy, provide:

• First line (→10 chars; hook)

• Full post with character count

• Hashtags (3→; end of post)

• Image specs (if design agent needs dimensions)

Related Skills

• channels-influencer: LinkedIn influencers for B2B

• pages-about: Professional brand alignment