Free LinkedIn Post Preview Tool
See exactly where LinkedIn cuts off your post with '...more' on desktop and mobile before you hit publish.
Visible before "...more" (desktop): 93 chars
Put a curiosity gap or sharp contradiction in the first 2 lines so readers click '...more' to expand.
Alex Rivera
Founder at Acme Cloud - Building API-first tools
1h · Edited · 🌐
Click "...more" inside the card to test how readers expand your post on desktop.
How does a LinkedIn post preview tool improve engagement?
A LinkedIn post preview tool simulates how your draft renders on desktop (roughly 210 characters or 3 lines) and mobile (roughly 140 characters or 2 lines) before truncation. Checking the fold ensures your opening hook creates curiosity before the '...more' button instead of cutting off mid-thought.
Unlike generic AI assistants that output clichéd platitudes, supapost applies proven patterns extracted from real top-performing social posts and replies. Use this free web tool for quick generation, or automate it in bulk using our REST API, n8n templates, and MCP server.
Example Outputs & Performance Patterns
Crawlable samples demonstrating high-engagement patterns vs generic filler.
Put this generation on autopilot
Every free generator is backed by supapost's REST API. Trigger posts and smart replies from Claude Code, n8n, Make, or custom cron scripts with your persistent brand voice applied.
curl -X POST https://supapost.ai/api/v1/content/generate \
-H "Authorization: Bearer sp_live_..." \
-H "Content-Type: application/json" \
-d '{
"type": "social",
"platform": "linkedin",
"topic": "3 lessons from onboarding 50 agency workspaces"
}'{
"type": "social",
"platform": "linkedin",
"content": "Managing 10 client brands is not a writing problem.\n\nIt is a voice isolation problem.\n\nHere is what broke first..."
}How it works
Paste your LinkedIn draft
Enter your text, emojis, and line breaks. The counter validates against LinkedIn's 3,000-character limit.
Toggle desktop & mobile
Switch between desktop and mobile feed widths to inspect where '...more' hides the rest of your post.
Tighten the hook or automate
Adjust your first two lines for maximum expansion clicks, or generate fold-optimized drafts via API.
Frequently asked questions
Where does LinkedIn cut off posts with 'see more'?
On desktop feeds, LinkedIn typically truncates text posts after roughly 210 characters or 3 lines, whichever comes first. On mobile devices, truncation happens earlier at around 140 characters or 2 lines. Using a line break early triggers the '...more' fold sooner.
What is the maximum LinkedIn post character limit in 2026?
Standard LinkedIn feed posts support up to 3,000 characters, including spaces, emojis, and hashtags. Comments are capped at 1,250 characters, and profile headlines allow up to 220 characters.
Why does the LinkedIn 'see more' fold matter for reach?
LinkedIn's feed algorithm tracks dwell time and expansion clicks on '...more' as strong positive engagement signals. A concise two-line contradiction or specific number above the fold earns far more expansions than a dense opening paragraph.
Can I generate properly formatted LinkedIn posts via API?
Yes. supapost's POST /api/v1/content/generate endpoint with platform set to 'linkedin' automatically structures posts with a short two-line hook above the fold, scannable body spacing, and a conversation-starting closing question.
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