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Content channels

This article maps the content formats Glowtify supports to the channels where each lives. It sits above the individual connector articles: connectors are the plumbing, channels are the formats.

Use this when you're deciding how a piece of content will be distributed and want to understand the specs, limits, and quirks of each channel.

Formats and channels​

FormatChannelsEditor article
Social postFacebook, Instagram, LinkedIn, TikTokEdit a social post
Social storyFacebook, InstagramEdit a story
Email campaignMailchimp, Klaviyo, CyberImpactEdit an email
Blog articleWordPress, ShopifyEdit a blog post
Paid adFacebook Ads, Google AdsEdit an ad

Social post specs​

Instagram feed post​

  • Image sizes: 1:1 (1080×1080), 4:5 (1080×1350), 16:9 landscape
  • Caption limit: 2 200 characters
  • Hashtags: up to 30 (recommended: 10–15 targeted)
  • Link behavior: links in caption are not clickable — use "link in bio" or first comment

Facebook feed post​

  • Image sizes: 1:1, 4:5, 16:9
  • Caption limit: 63 206 characters
  • Links: clickable, with preview

LinkedIn post​

  • Caption limit: 3 000 characters
  • Image or video: 1.91:1 recommended
  • Tone: more professional than IG/FB
  • Article format available for long-form (different endpoint)

TikTok post​

  • Video only (no static image posts)
  • Caption limit: ~2 200 characters
  • Vertical 9:16 format
  • Audio and hashtags drive discovery

Story specs​

Instagram / Facebook story​

  • 9:16 vertical
  • Duration: 24 hours visible
  • Stickers: polls, questions, countdowns, locations
  • Link: available for eligible accounts
  • Multi-frame: up to 100 frames per story

Email specs​

Subject line + preheader​

  • Subject: keep under 60 characters for full mobile visibility
  • Preheader: 80–100 characters, distinct from subject

Body​

  • Email-safe HTML (no JavaScript, constrained CSS)
  • Mobile-first design (60%+ of opens happen on mobile)
  • Images with alt text — many clients block images by default

Platform differences​

  • Mailchimp: strong segmentation, wide library of blocks
  • Klaviyo: stronger e-commerce integration, flows
  • CyberImpact: Canadian platform, bilingual (FR/EN) support

Blog article specs​

Structure​

  • H1 title, H2 main sections, H3 sub-sections
  • Introduction (the "why should I read this?")
  • Body with scannable sub-sections
  • Conclusion with CTA
  • Images every 300–500 words

SEO metadata​

  • Meta title: 50–60 characters, include primary keyword
  • Meta description: 140–160 characters, compelling snippet
  • URL slug: short, lowercase, keyword-rich

Platform differences​

  • WordPress: full flexibility — custom fields, plugins, taxonomies
  • Shopify: integrated with your product catalog, good for product-centric content

Facebook Ads​

  • Feed ad: 1:1 or 4:5 image/video
  • Story/Reels ad: 9:16
  • Headline: 40 characters
  • Primary text: 125 characters recommended (longer gets truncated)
  • Search ad: 3 headlines × 30 characters, 2 descriptions × 90 characters
  • Display ad: multiple image sizes to provide
  • Performance Max: assets bundled and rotated by Google

Cross-channel considerations​

When an epic targets multiple channels, Glowtify adapts the content per channel but the brief stays unified. The key trade-offs:

  • Caption length — what works on LinkedIn may be too long for Instagram; what works on Instagram too short for LinkedIn
  • Tone — LinkedIn tends professional, TikTok tends casual/playful
  • Media — square on Instagram, vertical on TikTok/stories, landscape on YouTube (if supported later)
  • Links — clickable on Facebook/LinkedIn/email, not clickable on Instagram feed