29 Aug Stop Saying “Keep It Short”: A Quick Guide to Social Media Copy Writing
After decades in marketing, one of the most over-repeated — and often incorrect — pieces of advice we still hear is: “Always keep it short.”
Short posts absolutely have their place. But treating brevity as a rule instead of a tool can limit reach, engagement, and connection. At Moore Creative Consulting, we guide clients toward a smarter best practice: intentional variety. Mixing short, medium, and longer content isn’t just a creative preference — it’s supported by platform guidance, performance data, and how audiences actually consume content.
Different lengths drive different behaviours:
- Short posts stop the scroll
- Medium posts educate quickly
- Longer posts build trust, increase time spent, and spark meaningful conversation
When used together, they create a stronger overall presence.
What Best-Practice Sources Tell Us
Platforms recommend mixing content lengths
LinkedIn’s own guidance encourages creators and businesses to use a mix of short and long posts to see what drives interaction. This reinforces what we see daily with clients: there is no single “perfect” length.
Longer posts can increase dwell time
LinkedIn engineering insights have highlighted that time spent reading a post (often called dwell time) can influence distribution. Longer, valuable posts naturally increase reading time, which can help content reach more people.
Data challenges the “short always wins” myth
Analyses of LinkedIn performance have found that posts over 1,000 characters often outperform shorter posts. Short content is fast — but longer content is often more memorable and valuable.
On Instagram, longer captions can drive stronger engagement
Testing from major social media management platforms has shown that longer captions often outperform ultra-short ones when they add story, context, or education.
“Keep it short” advice often comes from ad strategy
Meta commonly recommends short primary text for ads (often 1–3 lines / ~125 characters) because placements cut off copy and people skim quickly. That guidance is valuable for paid placements — but it does not mean all organic posts should be tiny.
Organic content has a different job: build connection, authority, and trust.
Why Variety Works
Different lengths map to different goals:
Short posts help with:
- Attention
- Reach
- Quick updates
- Simple calls-to-action
Medium posts help with:
- Quick teaching
- Light storytelling
- Conversation starters
Long posts help with:
- Credibility
- Emotional connection
- Thought leadership
- Saves and shares
Different people also consume differently. Some skim. Some read deeply. Variety ensures your content speaks to both.
What Length Works Best on Each Major Platform
While variety is important everywhere, certain lengths naturally perform better depending on the platform’s culture and design.
Best for:
- Short: 1–2 punchy lines to stop the scroll
- Medium: 3–6 lines with a clear takeaway
- Long: Storytelling, education, personal reflections
Why it works:
- Longer captions add context and meaning
- They allow for natural keyword use, which can support discoverability
- Stories and lessons often lead to more saves and shares
Use short when:
- Announcing something
- Posting a quick moment
- Sharing a simple visual
Use long when:
- Teaching something
- Sharing a client story
- Building emotional connection
Best for:
- Medium to long posts that feel conversational
- Story-driven content
- Community updates
Why it works:
- Facebook audiences often engage with stories
- Longer posts can encourage comments and discussion
- Personal, human content performs well
Use short when:
- Sharing reminders
- Event announcements
- Quick links
Use long when:
- Telling stories
- Explaining impact
- Sharing community updates
Best for:
- Medium to long posts (often 700–1,500+ characters)
- Educational insights
- Thought leadership
- Personal business stories
Why it works:
- Professional audiences expect depth
- Longer posts increase dwell time
- Insight-driven content builds credibility
Use short when:
- Sharing quick wins
- Highlighting achievements
- Posting quick thoughts
Use long when:
- Teaching lessons
- Sharing experience-based insights
- Starting meaningful conversations
X (formerly Twitter)
Best for:
- Short and punchy posts
- Threads for longer storytelling
Why it works:
- Fast-paced platform
- People skim quickly
- Ideas are often broken into multiple posts
Use short when:
- Sharing quick insights
- Commentary
- Reactions
Use long when:
- Creating threads
- Explaining a concept step-by-step
TikTok
Best for:
- Short captions paired with strong visuals
- Medium captions with context and keywords
Why it works:
- The video does most of the talking
- Captions support discoverability and clarity
Use short when:
- Letting the video carry the message
Use medium when:
- Adding helpful context
- Including keywords naturally
A Simple Posting Mix We Recommend
At Moore Creative Consulting, a balanced structure many businesses benefit from looks like:
- 40–50% short posts
Quick moments, updates, hooks - 30–40% medium posts
Quick education, takeaways, light storytelling - 10–20% long posts
Stories, insights, thought leadership
This supports multiple outcomes:
- Reach
- Engagement
- Saves
- Comments
- Trust-building
Match Length to Intent
Instead of asking, “How long should this post be?”
Ask, “What do I want this post to achieve?”
Reach: short or medium hooks
Saves/Shares: medium to long value-driven posts
Comments: medium to long with a clear prompt
Trust: longer storytelling and insight
The Takeaway
“Keep it short” isn’t a strategy.
Intentional variety is.
The strongest social media presences use:
- Short posts for attention
- Medium posts for clarity
- Long posts for connection
Each length plays a role. Each serves a purpose. And together, they create a more dynamic, human, and effective content strategy.
If your content has started to feel repetitive or flat, the answer may not be posting more.
It may be posting with more intention — and with more variety.
If you’re feeling unsure about what length your posts should be — or wondering why your content isn’t getting the engagement it deserves — you’re not alone. A strong social media presence isn’t about posting more; it’s about posting with intention.
At Moore Creative Consulting, we help businesses build thoughtful, strategic content plans that balance reach, connection, and credibility across every platform. From defining the right mix of post lengths to developing a clear voice and direction, we work alongside you to create a social strategy that actually supports your goals.
If you’d like a fresh perspective on your content or help refining your approach, we’d love to connect. Reach out to our team to start the conversation and see how a more intentional strategy can strengthen your social presence.