Create platform-specific social media posts that respect each platform's conventions, character limits, and audience expectations. Produces copy-paste-ready content.
Modes
From Scratch
User provides topic + key points. Generate posts for selected platforms.
From Content
User provides existing content (blog post, newsletter, announcement, press release). Repurpose into platform-appropriate posts.
Campaign
Generate a coordinated set of posts across all platforms for a single launch, announcement, or event. Includes posting sequence and timing suggestions.
Workflow
1. Gather Input
Field
Required
Example
Topic or source content
Yes
"We just launched a new feature" or path to blog post
Target platforms
Yes
LinkedIn, Facebook, Instagram, Reddit
Tone
No
Professional, casual, enthusiastic, educational
CTA
No
"Try it free", "Read more", "Comment your thoughts"
Link to include
No
https://example.com/blog/new-feature
Image available?
No
Yes/no — affects post structure
If the user provides a file path or URL to existing content, read it first and extract the key messages.
2. Generate Per-Platform Posts
LinkedIn
Audience
Professionals, B2B, industry peers
Tone
Authoritative but approachable, thought-leadership
[Hook line — must grab attention before "see more" truncation]
[blank line]
[2-3 short paragraphs with line breaks between]
[blank line]
[CTA or question to drive comments]
[blank line]
[3-5 relevant hashtags]
Rules
:
Hook must work in first 2 lines (before "…see more" at ~210 chars)
Use line breaks liberally — wall-of-text kills engagement
Ask a question at the end to drive comments
Hashtags: 3-5 max, mix broad (#Marketing) and niche (#CloudflareWorkers)
Links in comments perform better than in post body (algorithm penalty)
No emoji overload — 1-2 max, or none for serious topics
Image specs
1200×627px (1.91:1) for link preview, or 1080×1080 (1:1) for standalone
Example
:
We just shipped something we've been building for 6 months.
It started as a "wouldn't it be nice if…" conversation and turned
into our most requested feature. Here's what we learned:
→ Users don't want more features. They want fewer clicks.
→ The prototype we almost killed became the final product.
→ Shipping weekly forced us to cut scope ruthlessly.
The full story is in our latest blog post (link in comments).
What's the hardest product decision you've made this year?
ProductDevelopment #StartupLife #BuildInPublic
Facebook
Audience
Mixed — friends, family, community, local businesses
Tone
Conversational, warm, community-focused
Optimal length
80–150 characters for engagement, up to 500 for storytelling
Key message in first 125 chars (truncation point), full caption up to 2,200
Structure
:
[First line — must work as standalone (before "…more")]
[blank line]
[Story or detail — 2-4 short paragraphs]
[blank line]
[CTA — save, share, comment, link in bio]
.
.
.
[Hashtags — in first comment OR separated by dots]
Rules
:
First 125 characters must carry the message (everything after is hidden behind "…more")
No clickable links in captions — direct to "link in bio"
Hashtags: 20-30 in first comment (not in caption) for discoverability
Mix hashtag sizes: 5 large (1M+ posts), 10 medium (100K-1M), 10 niche (<100K)
Emojis are part of the language — use them naturally
Carousel posts: include a swipe CTA ("Swipe for the full breakdown →")
Stories: prompt action ("Reply with 🔥 if you relate")
Image specs
1080×1080 (1:1) feed, 1080×1350 (4:5) portrait, 1080×1920 (9:16) stories/reels
Example
:
We shipped our most requested feature today. Here's the story 👇
Six months ago, someone on our team said "wouldn't it be nice
if users could do this in one click instead of five?"
We almost killed the prototype twice. But our users kept asking
for it. So we shipped it.
The biggest lesson? Your users don't want more features.
They want fewer clicks.
Full story → link in bio
💬 What's one feature you wish was simpler in your favourite app?
First comment
:
Community-specific, values authenticity, allergic to marketing
Tone
Genuine, value-first, conversational, never salesy
Optimal length
Title 100-150 chars, body varies by subreddit
Structure
:
Title: [Descriptive, value-focused — NOT clickbait]
Body:
[Context — why this matters to this community]
[The substance — what you learned, built, or discovered]
[Optional: link to more detail]
[Discussion prompt — genuine question]
Rules
:
Title is everything
— Reddit lives and dies by titles
NO self-promotion feel — lead with value, not product
Each subreddit has different norms — check the rules before posting
Don't use hashtags (not a Reddit convention)
Don't use emojis in titles (feels out of place on most subreddits)
Share the insight, not the product. "Here's what we learned" > "Check out our new feature"
Cross-posting: adapt tone per subreddit (r/startups vs r/webdev vs r/smallbusiness)
Subreddit suggestions by topic
:
Topic
Subreddits
Product launch
r/SideProject, r/startups, r/indiehackers
Web dev
r/webdev, r/javascript, r/reactjs
Design
r/web_design, r/UI_Design
Business
r/smallbusiness, r/Entrepreneur
Tech
r/programming, r/technology
Example
:
Title: After 6 months of building, the biggest lesson was
"users want fewer clicks, not more features"
We built a feature our users kept requesting. Halfway through
we almost killed it because the prototype felt clunky.
What saved it: we stopped adding capabilities and started
removing steps. The final version does less than the prototype
but users complete the task in 1 click instead of 5.
Three things I'd tell past-me:
1. Prototype with your heaviest users, not your most vocal ones
2. "Ship weekly" forces you to cut scope — that's a feature
3. The thing users ask for and the thing they need are different
Anyone else had a similar experience where removing features
improved the product?
3. Image Recommendations
For each platform, suggest image requirements:
Platform
Format
Dimensions
Notes
LinkedIn
PNG/JPG
1200×627
Text overlay OK, keep key message in centre
Facebook
PNG/JPG
1200×630
Minimal text (old 20% rule still affects reach)
Instagram
PNG/JPG
1080×1080
Visual-first — image must work without caption
Reddit
PNG/JPG
Varies
Optional — text posts often perform better
If the
ai-image-generator
skill is available, suggest using it to generate companion images with the right aspect ratios.
4. Output Format
Present each post in a clearly labelled block:
═══ LINKEDIN ═══
[post content]
═══ FACEBOOK ═══
[post content]
═══ INSTAGRAM (Caption) ═══
[caption content]
═══ INSTAGRAM (First Comment — Hashtags) ═══
[hashtags]
═══ REDDIT (r/subreddit) ═══
Title: [title]
Body: [body]
Save to
.jez/artifacts/social-posts-[topic].md
if the user wants to keep them for scheduling.
Campaign Mode
For launches or announcements, generate a posting sequence:
Timing
Platform
Post type
Day -1
LinkedIn
Teaser / behind-the-scenes
Day 0 (morning)
All platforms
Announcement post
Day 0 (afternoon)
Instagram Stories
Quick video/carousel
Day +1
Reddit
Value-focused discussion
Day +3
LinkedIn
Results/learnings follow-up
Day +7
Facebook
Customer reaction / testimonial
Quality Rules
Never copy-paste the same text across platforms
— each platform has different conventions
No corporate jargon
— "leverage our synergies" belongs nowhere
Front-load the value
— every platform truncates. The first line must work standalone.
Match the platform culture
— LinkedIn is not Instagram is not Reddit
Include a reason to engage
— question, poll, or genuine discussion prompt
Check character limits
— LinkedIn (3,000), Facebook (63,206), Instagram caption (2,200), Reddit title (300)
Never fake engagement
— no "Drop a 🔥 if you agree" on LinkedIn, no hashtag spam on Reddit