A LinkedIn scheduler that counts what LinkedIn counts
Text posts, image posts of up to 20 photos and video up to 5 GB — with a character count against LinkedIn’s real limit while you type.
LinkedIn is the network where the text is the product. It is also the one where the limit is a hard wall: 3,000 characters, and the API refuses the post at 3,001.
That makes cross-posting the quiet danger. A caption that fits Facebook with room to spare dies on LinkedIn, and a tool that shows you one text box with one counter will not warn you until the failure notice.
Ignix counts per network — one draft, and next to each target the count that network applies. The rest of what LinkedIn accepts and refuses is below.
What you can schedule on LinkedIn
Three formats, all first-class: text alone, images, or one video. No Stories, no Reels — LinkedIn retired ephemeral content years ago, and a tool that pretends otherwise is guessing.
Text post
Up to 3,000 characters, hard limit. Text-only posts are normal on LinkedIn — often the best-performing format — and the composer treats them as such.
Image post
Up to 20 images in a single post — the highest of any major network, and most people never learn it exists. JPEG, PNG or GIF, up to 8 MB each.
Video
One video up to 5 GB — mp4, mov or avi. A vertical video publishes as a regular video: LinkedIn has no Reel format, whatever the file looks like.
The four things that make a LinkedIn post fail
Each one is checked in the composer before the post is queued.
The text is over 3,000 characters
LinkedIn’s limit is hard: the API refuses the post outright. It is the longest-form major network after Facebook, which is exactly why captions written for elsewhere overflow here without anyone noticing.
In Ignix: A live count per network, next to the LinkedIn target, while you type — not one global counter that only matches one network’s rules.
A video format LinkedIn does not take
mp4, mov and avi go through; webm — which TikTok happily accepts — does not. Cross-posting the same file to both is where this bites.
In Ignix: Format is validated per network on upload, so the same file shows as fine for TikTok and flagged for LinkedIn before anything is queued.
Expecting a Story or a Reel
LinkedIn has neither. A cross-post set built around vertical ephemeral content has no LinkedIn equivalent, and tools that silently “adapt” it decide for you.
In Ignix: The composer shows exactly what LinkedIn will get — a regular post — and you adjust the text for it in its own tab if you want to.
One caption pasted to five networks
Not a failure LinkedIn reports — a failure of the post. The tone that works in an Instagram caption reads wrong on LinkedIn, and vice versa. The mechanical symptom is hashtags and @mentions that point at nothing.
In Ignix: Per-network captions on one post: write once, then adapt the LinkedIn version in its own tab — different words, same schedule. The AI can draft the adaptation from your original.
Twenty images is a format, not a limit
Nobody expects a 20-image post to exist on LinkedIn — the networks around it stop at 10. It fits the things LinkedIn is actually for: event recaps, project walk-throughs, team introductions, portfolio pieces.
In the composer it is just attachments: add up to 20 and the post publishes as a multi-image post.
The comments come back to one inbox
LinkedIn conversations happen in the comments, and comments are what the unified inbox collects: replies to your posts land next to every other network, answered from the same box, with saved replies and team assignment.
What Ignix does not promise on LinkedIn: DM automation. LinkedIn does not open private messaging to publishing tools, and nobody compliant can offer it — worth knowing when you compare tools.
Your best hour, from your own audience
The “Best time to post” heatmap is built from what your own posts earned, weekday by hour, in your timezone. LinkedIn audiences keep office hours more than most — but yours might not, and your own history is the only place that answer lives.
On the official API, with no password
You authorise Ignix from LinkedIn’s own site through the official API. No password stored, no token in our database, no browser extension pretending to be you — the shortcuts that get accounts restricted.
Longer read: the best time to post on Instagram — and what outranks it.
Questions people ask
Can I schedule text-only posts on LinkedIn?
Yes — text alone is a normal, often top-performing LinkedIn format, up to a hard limit of 3,000 characters. The composer counts against that limit live, per network, so a caption that fits elsewhere cannot silently overflow here.
How many images can one LinkedIn post carry?
Up to 20 in a single multi-image post — more than any other major network. JPEG, PNG or GIF, up to 8 MB per image.
Can I schedule LinkedIn Stories or Reels?
No, because LinkedIn has neither format. A vertical video publishes as a regular video post. Any tool offering LinkedIn Stories is offering something the network itself retired.
Does DM automation work on LinkedIn?
No — LinkedIn does not open private messaging to publishing tools, for anyone. Comments on your posts do land in the unified inbox. On networks where DM automation is allowed — Instagram, Facebook, WhatsApp — Ignix does it with the same builder.
Can the same post have different text per network?
Yes. One post, one schedule, and each network can carry its own caption — write the LinkedIn version in its own tab, or let the AI adapt your original to it.
Write it once, publish it right, everywhere
A LinkedIn post scheduler with live per-network counts, 20-image posts, video up to 5 GB — and the comments answered from the same inbox as every other network.
Start free for 7 daysPlans start at $19 a month. Cancel in two clicks.