Multi Platform Publishing Guide
Learn more about multi platform publishing guide in our help documentation.
🚀 Publish Everywhere with Postly
One tool. Every platform. Perfectly optimized.
🌐 Why Multi-Platform Publishing Matters
Every social platform has its own identity - formats, tone, audience expectations, and media rules. What works on Instagram might flop on LinkedIn. A witty one-liner on X needs a more visual punch on Threads.
Postly was built to embrace this diversity.
With Postly, you can publish once and automatically tailor content to fit each platform’s specs - without switching tabs, reformatting media, or rewriting captions.
⚙️ What Postly Does for You
✅ One-Click Publishing
Push content to all your connected platforms - X, LinkedIn, Facebook, YouTube, Instagram, Threads, and more - with a single click.
✅ Smart Media Optimization
From image resizing to video format validation, Postly ensures your files are always compatible with platform-specific requirements.
✅ Preview + Auto-Fix
See how your content will look per platform and get instant fix suggestions for errors or limitations.
✅ Content & Style Guidance
Postly supports you with platform-specific character limits, tone prompts, and engagement tips so your post feels native - everywhere.
🧩 How to Achieve Seamless Cross-Platform Posting
-
Connect Your Accounts
Sync all your social and content platforms to your Postly workspace. -
Compose Your Post Once
Write your caption, add your media, and let Postly handle the rest. You can customize per platform as needed. -
Post or Schedule
Choose to publish instantly or schedule across multiple time zones, platforms, and formats. -
Review Auto-Fixes
If your media doesn’t match the platform specs, Postly will offer suggestions or automatically optimize it. -
Track Performance (Coming Soon)
Soon, you’ll be able to compare how your post performed across platforms.
✍️ Tagging and Mentions
Each platform handles tagging differently. Postly helps you apply tags and mentions correctly to boost engagement and ensure compatibility.
| Platform | Status | Notes |
|---|---|---|
| ✅ Live | Mention @username | |
| Threads | ✅ Live | Mention @username |
| X (Twitter) | ✅ Live | Mention @username |
| Bluesky | 🔜 Coming Soon | Mention @username |
| 🔜 Coming Soon | Tag @PageName | |
| 🔜 Coming Soon | Tag @UserName or @PageName | |
| YouTube | 🔜 Coming Soon | Mention @username in description |
💡 Note: Postly automatically disables tags for unsupported platforms to avoid broken mentions. Learn more about Tagging and Mentions
🖼️ Image Auto-Fix
Postly’s Image Auto-Fix adjusts your visuals to meet every platform’s size, format, and compression needs - without lifting a finger.
- Supported Types: JPEG, PNG, SVG, WebP, BMP, HEIF, RAW
- Platform Tuning: TikTok, Instagram, LinkedIn, Twitter, Threads, and more
- Live Previews: See image crops, padding, and aspect ratio tweaks per platform
Learn more about Image Auto-Fix
🎥 Video Validation
Publishing videos is tricky. File too big? Wrong resolution? Not anymore.
Postly validates and adjusts your video files to prevent failures.
- Formats: MP4, MOV, WEBM, AVI
- Checks: Aspect ratio, duration, resolution, size
- Smart Fixes: Trim, compress, or reformat with guided help
Learn more about Video Validation
📏 Content Format Guidelines
Every platform has different rules. Here’s a quick guide to how Postly adapts for each:
🔹 TikTok
- Video: Max 4GB, up to 10 minutes, 1080×1920px
- Text: 150-character captions
- Images: Not supported
🔴 YouTube
- Video: Up to 12 hours or 128GB
- Text: Titles (100 chars), Descriptions (5000 chars)
- Thumbnails: 1280×720px
- Video: Max 10GB, 4 hours
- Image: 1080×1080px
- Text: Up to 63,206 characters
- Video: Max 4GB, Reels 3–90s
- Image: Square (1080×1080px), Portrait (1080×1350px)
- Text: Captions (2,200 chars), 30 hashtags max
⚫ Twitter (X)
- Video: Max 512MB, 140s
- Image: 1200×675px
- Text: 280 characters
- Video: 3s–10min, up to 5GB
- Image: 1200×627px
- Text: Posts (3,000 chars), Articles (125,000 chars)
- Video: Max 2GB, 4–15 min
- Image: 1000×1500px
- Text: Title (100 chars), Description (500 chars)
📦 Additional Platform Specs
- Google Business: Images only; no video API
- Telegram: Short-form video (60s max)
- Bluesky: Light specs for short videos and images
- RSS Feeds: Embedded media via enclosure tags
🧠 Pro Tips
💡 Use the Preview Per Platform feature to tweak tone, hashtags, or links without rewriting from scratch.
🔓 Premium plans unlock advanced scheduling, bulk uploads, and enhanced video tools.
🚀 Get Started Today
Whether you're a creator, brand, or agency - Postly lets you create once and publish everywhere.
Spend less time managing platforms and more time growing your audience.