What is the LinkedIn post character limit in 2026?

LinkedIn posts can be up to 3,000 characters long. However, only the first 140 characters are visible in the feed before the 'see more' button appears. For maximum engagement, aim for 150-300 characters total with your key message in the first 140.

What's the ideal LinkedIn image size?

The ideal LinkedIn image size is 1200x627 pixels (1.91:1 aspect ratio). This works perfectly for single images in posts. For best results, keep file size under 5MB and use PNG or JPG format.

How many images can I add to a LinkedIn post?

You can add up to 9 images to a single LinkedIn post, creating a carousel. Each image should be 1080x1080 pixels (square format) for carousels. The first image acts as the main thumbnail in the feed.

What are LinkedIn video size requirements?

LinkedIn videos can be 75KB to 200MB in size, 3 seconds to 10 minutes long, and support MP4 format. Recommended dimensions are 1920x1080 (16:9) for landscape or 1080x1920 (9:16) for vertical videos. Square (1:1) also works well.

Does LinkedIn have a hashtag limit?

LinkedIn doesn't have an official hashtag limit, but best practice is to use 3-5 relevant hashtags. Too many hashtags can make your post look spammy and reduce engagement. Focus on industry-specific or trending hashtags relevant to your content.

What's the ideal LinkedIn document size?

LinkedIn documents (PDFs) can be up to 100MB and 300 pages long. For carousels created from PDFs, each page becomes a slide. Recommended dimensions are 1080x1350 pixels per page for best mobile viewing.

How long should LinkedIn posts be for best engagement?

Posts with 150-300 characters tend to get the most engagement on LinkedIn. This is long enough to provide value but short enough to keep readers engaged. Remember, only the first 140 characters show without expanding.

LinkedIn Post Size Guide 2026: Character Limits, Image Sizes, and More

TL;DR

LinkedIn posts: 3,000 characters max, but only first 140 show without expanding. Images: 1200x627px for single images, 1080x1080px for carousels. Videos: Up to 200MB, 10 minutes max, 1920x1080px recommended. Sweet spot: 150-300 characters with key message in first 140, single high-quality image, 3-5 relevant hashtags.

LinkedIn keeps updating their platform, and getting your content dimensions wrong can hurt your reach. A post that looks great on desktop might get cut off on mobile, or worse, LinkedIn might compress your carefully designed image until it's unreadable.

We've tested every major content format on LinkedIn in 2026, tracked what performs best, and compiled everything into this complete size guide. Whether you're posting text, images, videos, or documents, here's exactly what you need to know.

Different LinkedIn content format types showing text posts, single images, carousel slides, and video players with optimal dimensions

LinkedIn Post Character Limits

Maximum length: 3,000 characters (including spaces)

Visible without expanding: First 140 characters

Recommended length: 150-300 characters total

Here's the thing most people get wrong about LinkedIn character limits: just because you can write 3,000 characters doesn't mean you should.

LinkedIn shows only the first 140 characters in the feed before adding the "...see more" button. If your hook or main point isn't in those first 140 characters, you've already lost most readers.

Based on our analysis of high-performing posts, the sweet spot is:

Hook: First 1-2 sentences (under 140 characters)
Body: 2-4 sentences with your main point or story
CTA: Clear next step in the final sentence
Total: 150-300 characters

Pro Tip:

Write your hook first, then count characters. Make sure your key message fits in the first 140 characters, then expand from there.

LinkedIn Image Sizes and Specifications

Single Images

Recommended size: 1200x627 pixels
Aspect ratio: 1.91:1 (landscape)
File size: Under 5MB
Formats: JPG, PNG, GIF
Minimum size: 552x289 pixels

The 1200x627 size works perfectly across all devices and gives you the best image quality without compression issues. LinkedIn will automatically crop images that don't fit the 1.91:1 aspect ratio, often cutting off important parts of your design.

Carousel Images (Multiple Images)

Recommended size: 1080x1080 pixels (square)
Aspect ratio: 1:1
Maximum images: 9 per post
File size: Under 5MB per image
Formats: JPG, PNG, GIF

When you upload multiple images, LinkedIn creates a carousel that users can swipe through. Square images work best because they display consistently across desktop and mobile without cropping.

Important:

Never use yellow badges on white backgrounds - they're hard to read. Stick to dark text on light backgrounds or white text on dark backgrounds for maximum readability.

LinkedIn Video Specifications

Native Video Uploads

File size: 75KB to 200MB
Duration: 3 seconds to 10 minutes
Format: MP4 (recommended)
Recommended dimensions:
- Landscape: 1920x1080 pixels (16:9)
- Square: 1080x1080 pixels (1:1)
- Vertical: 1080x1920 pixels (9:16)
Frame rate: 30 fps maximum
Audio: Supported (optional)

Video posts typically get 5x more engagement than text-only posts on LinkedIn. The platform prioritizes native video uploads over links to YouTube or other platforms.

Square (1:1) and vertical (9:16) formats work particularly well on mobile, which accounts for over 60% of LinkedIn usage. However, if you're recording talking-head style content, landscape (16:9) often looks more professional.

Video Tip:

Add captions to your videos. Most LinkedIn users watch videos without sound, especially in professional environments.

LinkedIn Document Specifications

File size: Up to 100MB
Pages: Up to 300 pages
Format: PDF only
Recommended dimensions: 1080x1350 pixels per page
Aspect ratio: 4:5 (portrait)

LinkedIn document carousels have become incredibly popular for sharing multi-slide content. When you upload a PDF, each page becomes a separate slide that users can swipe through.

The 1080x1350 size ensures your content looks crisp on mobile devices. Design your PDFs with mobile viewing in mind - use large fonts (minimum 24pt), high contrast colors, and simple layouts.

Quick Reference: Optimal LinkedIn Post Sizes

Content Type	Dimensions	File Size	Best Practice
Text Post	150-300 characters	N/A	Hook in first 140 chars
Single Image	1200x627px	Under 5MB	1.91:1 aspect ratio
Carousel Images	1080x1080px	Under 5MB each	Square format, max 9 images
Video	1920x1080px	75KB - 200MB	MP4, max 10 minutes
Document	1080x1350px	Under 100MB	PDF, max 300 pages

Hashtags and Mentions Best Practices

Hashtags

Recommended number: 3-5 hashtags
Character count: Hashtags count toward your 3,000 character limit
Placement: End of post or naturally within text
Types: Mix of industry, niche, and trending hashtags

Unlike Instagram, LinkedIn users prefer fewer, more relevant hashtags. Posts with 3-5 hashtags typically perform better than those with 10+ hashtags.

Mentions

Format: @firstname lastname or @company
Limit: No official limit, but 3-5 mentions work best
Notification: Tagged people get notified and are more likely to engage

Mobile Optimization Tips

Over 60% of LinkedIn users access the platform on mobile devices. Here's how to optimize for mobile viewing:

Comparison of how LinkedIn posts appear differently on mobile phones versus desktop screens

Text readability: Use line breaks to create white space
Image text: Use fonts larger than 24pt in images
Video orientation: Square or vertical videos perform better on mobile
Document design: Keep layouts simple with high contrast
CTA placement: Put your call-to-action early in the post

Mobile Test:

Always preview your posts on mobile before publishing. What looks great on desktop might be hard to read on a phone screen.

Common LinkedIn Post Size Mistakes to Avoid

Burying the lead: Putting your main point after the 140-character preview limit
Wrong aspect ratios: Using tall images that get cropped awkwardly
Tiny text in images: Text that's unreadable on mobile devices
Oversized files: Large images that take forever to load
Too many hashtags: Using 10+ hashtags like it's Instagram
Vertical videos on desktop: Not considering how content appears across devices
No captions on videos: Forgetting that many users watch without sound
Inconsistent carousel sizes: Mixing different image dimensions in one post

Tools for Creating LinkedIn Content

Here are some helpful tools for creating content that meets LinkedIn's size requirements:

Canva: Templates pre-sized for LinkedIn posts and carousels
Figma: Custom design work with precise dimension control
Adobe Creative Suite: Professional image and video editing
Loom: Screen recording with LinkedIn-friendly export options
Character count tools: Online counters to check post length

Many of these tools have specific LinkedIn templates that automatically use the correct dimensions, making it easier to create content that looks professional across all devices.

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What's New in 2026

LinkedIn continues to evolve their platform. Here are the recent changes that affect content sizing:

Improved video compression: Better quality retention for uploaded videos
Enhanced mobile experience: Better handling of different aspect ratios on mobile
Document carousel updates: Improved rendering of PDF pages as carousel slides
AI-powered cropping: LinkedIn's algorithm now does smarter automatic cropping of images

The core size requirements haven't changed significantly, but the platform handles various formats more gracefully than before. Still, following the recommended dimensions ensures the best possible display of your content.