Cross-posting to 13 social networks: one draft, 13 versions

Cross-posting fails when the same text goes to every network unchanged. It works when one draft becomes a version per network that fits that network's rules.

Cross-posting means publishing one piece of content to several social networks, with each version adapted to the network's limits and habits: length, media, link handling and hashtags. The core fact stays the same; the shape changes. The hard part is knowing the limits, because they change and the official docs sometimes contradict each other.

Below is a table of the limits for 13 networks, each taken from the platform's own help center or developer docs as of November 2026, with the sources listed per network, the places where the docs disagree, and a worked example of one announcement turned into 13 versions.

What are the posting limits on each network in 2026?

These are the documented limits for organic posts. "Not documented" means we found no figure in the platform's own docs; we left those cells empty rather than repeat third-party numbers.

Sources for each row

• LinkedIn: post length, video in the app, Videos API, multi-image API, Posts API on URL scraping.
• Facebook: Pages API posts, Reels publishing.
• Instagram: media reference (caption, image, Reels, Stories), content publishing (carousels, rate limit), help center on hashtags.
• X: counting characters, how to post, X Premium, longer videos.
• Threads: posts, text attachments, media specs.
• TikTok: direct post reference, photo post reference, media transfer guide.
• YouTube: title and description, hashtags, upload length, Shorts length.
• Pinterest: Pin specs, create Pin API.
• Reddit: Premium limits, community settings.
• Google Business Profile: posts, post content policy, localPosts API.
• Slack: chat.postMessage.
• Discord: webhooks, messages and embeds, Nitro.
• DEV: Forem API v1.

Where the official docs disagree

Four limits have conflicting official answers as of November 2026. Plan for the stricter one.

• X Premium post length. The X Premium page says 25,000 characters; the how-to-post page says 4,000.
• X Premium video length. The longer-videos page says 4 hours; the Premium page says about 3 hours.
• Instagram hashtags. The help center says 5 per post; the Graph API reference still says 30. Use 5.
• Google Business Profile post length. The 1,500-character figure often quoted appears in a Google community forum answer, not in Google's help articles. Keep updates well under it.

How do you adapt one draft into 13 versions?

Write one master draft that holds the fact, the proof and the link, then rewrite the shape per network group. Six groups cover the 13 networks.

Rules that apply to every version:

1. Keep one fact identical everywhere. The number, date or feature name should match across networks, so screenshots and replies don't contradict each other.
2. Put the link where the network rewards it. On X, each link counts as 23 characters, and through the API a post with a link costs $0.20 instead of $0.015 for one without, per X's pay-per-use pricing as of November 2026. A reply with the link is often the better choice.
3. Tag each link per network. Use a different utm_source per network so you can see which version brought the visit. Our guide to UTM parameters for social media posts has the naming scheme.
4. Respect media requirements. Instagram, TikTok, YouTube and Pinterest need media. A text-only master draft needs at least one image and one vertical video to cover all 13.

Worked example: one announcement, 13 versions

The master draft, for a fictional invoicing product: "Ledgerly now builds your three Monday finance reports overnight. Cash in, cash out, and invoices more than 30 days late, on one page. Live for every account today. Link: ledgerly.com/reports." The versions below are examples written for this guide.

• LinkedIn: Opens with the observation ("We watched 12 customers rebuild the same three reports every Monday"), then the change, then an ask for feedback. Link in the first comment.
• Facebook: The LinkedIn text, shortened by a third, with the link in the post so the preview card shows.
• X: "Ledgerly now builds your Monday finance reports overnight: cash in, cash out, and invoices 30+ days late on one page. Live for every account today." Link in a reply.
• Threads: Same as X in a friendlier tone, plus one topic tag: "finance ops".
• Instagram: A 4-image carousel of the report page, a two-sentence caption, up to 5 hashtags, "link in bio".
• TikTok: A 40-second screen recording with voiceover: "Here's what your Monday looks like now." Caption of one sentence.
• YouTube: The same video as a Short, titled "Monday finance reports, built overnight (Ledgerly)", plus a 3-minute walkthrough as a regular upload.
• Pinterest: A tall image of the report, title "Weekly finance report template: cash in, cash out, late invoices", description with the steps, destination link to the page.
• Reddit: Only where the community allows product posts. Title as a question the community asks ("How do you handle Monday reporting?"), body with the method first and the product as one option, disclosure that you work there.
• Google Business Profile: An update with two sentences and a "Learn more" button.
• Slack: A short announcement to your customer community workspace, with a screenshot.
• Discord: The same in the #announcements channel, under 2,000 characters, one embed.
• DEV: A technical write-up of how the overnight build works, with 4 tags and canonical_url pointing to your engineering blog.

What breaks when you post the same text everywhere?

Most failures are mechanical. They are easy to prevent once you know them.

• Cut-off text on X and Threads. A 900-character LinkedIn post won't fit 280 or 500 characters.
• Blocked Instagram posts. More than 5 hashtags and, per Instagram's help center, the caption won't post.
• Private TikTok posts. TikTok's docs say content posted by unaudited API clients is "restricted to private viewing mode" (TikTok). Check your tool is audited.
• Instagram rate limits. The API allows 100 API-published posts per 24 hours per account (Meta), which matters for agencies batching posts.
• Removed Reddit posts. Moderators can set title rules, required words and link restrictions per community.
• Removed GBP updates. Google says it may remove posts with phone numbers, email addresses or social handles in the text. Use the Call button.
• Hashtags ignored on YouTube. Add more than 60 and YouTube ignores all of them.

How do you cross-post with an AI agent?

Give the agent the master draft, the network list and the rules from the table, and ask for one version per network with the character count shown. A prompt you can copy:

Here is the master draft: [paste].
Write one version each for: LinkedIn, Facebook, X, Threads, Instagram,
TikTok (caption + 40-second script), YouTube (Short title + description),
Pinterest (title + description), Reddit (title + body, member voice),
Google Business Profile (2-4 sentences + button), Slack, Discord, DEV (title + 4 tags).
Rules: X under 280 characters with the link in a reply; Threads under 500
with one topic tag; Instagram at most 5 hashtags; YouTube title under 100;
Pinterest title under 100, description under 800; no phone numbers in the GBP text.
Keep this fact identical in every version: [fact].
Show the character count after each version.

In Tracee, this is the default flow: one draft becomes a version per channel, and each version is held to that network's rules (X at 280 characters, Instagram needs an image or video, TikTok and YouTube need video) before it can be scheduled. Reddit and DEV versions take the first line as the title. Links go out with UTM tags per channel, so the CRM can show which version brought the contact. Agents in ChatGPT, Claude or Cursor can run the same flow over Tracee's MCP server, and every version can wait for approval in one calendar. The features page shows the publishing view.

Next step

Take your next announcement, write the master draft in four sentences, and produce the six group versions first (long text, short text, visual, video, community, long-form or local). Check each against the table above before scheduling. If you want those checks done for you across all 13 networks, Tracee's plans are listed on the pricing page (at the time of writing, November 2026, from $10 a month).