Create platform-specific social media posts for LinkedIn, Facebook, Instagram, and Reddit. Handles character limits, hashtag strategies, hook placement, and image specs per platform. Works from scratch, from existing content (blog, newsletter, announcement), or as a multi-platform campaign. Produces

Social Media Post Generator 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 Optimal length : 1,200–1,500 characters (longer posts perform well) Structure : 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 : 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 Structure : Rules : Link posts: Facebook auto generates a preview card — don't repeat the headline in your text Short posts (under 130 chars) get larger text rendering in feed Questions and polls drive highest engagement Tag relevant pages when mentioning partners/clients Hashtags: 1 3 or none — Facebook hashtags are less effective than other platforms Emojis are welcome but don't overdo (2 3 max) Image specs : 1200×630px (1.91:1) for link preview, 1080×1080 (1:1) for photo posts Example : Instagram Audience : Visual first, younger demographic, lifestyle/brand focused Tone : Authentic, visual storytelling, personality forward Optimal length : Key message in first 125 chars (truncation point), full caption up to 2,200 Structure : 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 : First comment : Reddit Audience : 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 : 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 : 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: 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 1. Never copy paste the same text across platforms — each platform has different conventions 2. No corporate jargon — "leverage our synergies" belongs nowhere 3. Front load the value — every platform truncates. The first line must work standalone. 4. Match the platform culture — LinkedIn is not Instagram is not Reddit 5. Include a reason to engage — question, poll, or genuine discussion prompt 6. Check character limits — LinkedIn (3,000), Facebook (63,206), Instagram caption (2,200), Reddit title (300) 7. Never fake engagement — no "Drop a 🔥 if you agree" on LinkedIn, no hashtag spam on Reddit

social-media-posts