LinkedIn Formatting Guide 2026
Everything you need to know about bold text, post length, image dimensions, carousel specs, and more—all in one place.
Try Postcraft Free — Auto-Optimizes All FormatsHow to Bold Text in LinkedIn Posts
LinkedIn doesn't have native bold formatting, but you can use Unicode characters to create bold text. Here's how:
Manual Method
- 1.Use a Unicode text converter tool
- 2.Type your text and convert to bold Unicode
- 3.Copy and paste into your LinkedIn post
With Postcraft (Easier)
- 1.Select the text you want to bold
- 2.Click the B button (one click!)
- 3.Copy your formatted post to LinkedIn
Optimal LinkedIn Post Length 2026
Short Posts
20-40
words
Quick insights, hot takes
Optimal Range
40-150
words
Highest engagement
Long Posts
150-250
words
Deep stories, case studies
Pro tip: Postcraft's AI scores your "Length Fit" in real-time and suggests adjustments based on your content type.
LinkedIn Image Post Dimensions
Square Images (Recommended)
1200 × 1200 px
Square images get 38% more engagement than landscape on LinkedIn.
Landscape Images
1200 × 627 px
1.91:1 aspect ratio, same as link previews.
LinkedIn Carousel Post Dimensions
Square Carousel (Most Popular)
1080 × 1080 px
Upload as PDF for swipeable carousel posts.
Portrait Carousel
1080 × 1350 px
4:5 aspect ratio for more vertical real estate.
Postcraft tip: Our media library automatically tracks carousel dimensions and helps you organize multi-slide assets.
Quick Reference Table
| Format | Dimension / Limit | Notes |
|---|---|---|
| Post character limit | 3,000 characters | Including spaces |
| Headline limit | 220 characters | For articles |
| Optimal post length | 40-150 words | Highest engagement |
| Square image | 1200×1200 px | Recommended |
| Landscape image | 1200×627 px | 1.91:1 ratio |
| Carousel slides | 1080×1080 px | PDF format |
| Hashtags | 3-5 per post | Mix of sizes |
| Best posting times | Tue-Thu, 8-10am | Your timezone |
Stop Worrying About Formatting
Postcraft automatically scores your post length, formatting, and structure—so you can focus on creating great content.
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