Cross-post YouTube Shorts to Instagram, automatically
Connect both accounts once. Every new YouTube Shorts post you make is republished to Instagram automatically — we watch YouTube Shorts on a tightening interval, because YouTube Shorts offers nobody a push to subscribe to.
Every figure on this page is read at build time from the same file the splitter and the rules engine read, so it cannot drift from what the product actually enforces. Limits last verified 27 August 2026.
The reason
Why cross-post from YouTube Shorts to Instagram
You already post on YouTube Shorts. The audience on Instagram is a different set of people, and they see none of it unless you do the work twice — export, re-upload, rewrite the caption to fit, remember the alt text. That second pass is what stops happening in a busy week, and the Instagram account goes quiet for reasons that have nothing to do with what you are making.
For video this is worse than for text, because the second pass is not a copy and paste — it is a download, a re-encode and an upload, and it is measured in minutes each time. YouTube Shorts allows 3 minutes of video and Instagram allows 15 minutes, so there is also a real question about which of your posts can even make the trip. This page answers that question exactly rather than approximately.
Echowide does the second pass. It watches YouTube Shorts, decides whether each post should travel, fits it to Instagram, publishes it, and records what happened — including the failures, in the platform's own words. It is not a scheduler: you post where you were already going to post.
Side by side
What Instagram does differently
One end of this pair is video-first and publishes no text limit we can enforce, so the caption is rarely the constraint. Duration is: YouTube Shorts allows 3 minutes and Instagram allows 15 minutes.
| Limit | YouTube Shorts (origin) | Instagram (destination) |
|---|---|---|
| Characters per post | no text limit | 2,200 |
| Long posts | single post, no native thread | single post, no native thread |
| Video cap | 3 minutes | 15 minutes |
| Images per post | no verified image count | up to 10 images |
| How Echowide sees a new post | polled on an adaptive interval | polled on an adaptive interval, when it is the origin |
YouTube Shorts character limit in fullInstagram character limit in fullYouTube Shorts on the full platform tableInstagram on the full platform table
The carry list
What gets carried across, and what stops
- Textcarried
- Up to 2,200 characters go across as written. Instagram has no native thread, so a longer post stops with a reason rather than being chopped into unrelated posts.
- Images and alt textcarried
- Instagram takes up to 10 images, and alt text travels with each one. We do not invent a description for a photograph you did not describe.
- Videocarried
- Instagram caps video at 15 minutes, which is at or above what YouTube Shorts will hand us, so length is rarely the thing that stops a video on this pair.
- Threads and self-repliesit depends
- Instagram has no native thread we can build, so a self-thread arrives as its first post and the ledger says the rest was not carried. It is not silently flattened into a run of separate posts.
- Replies to other peoplestops
- Stopped by default: a reply carries half a conversation your Instagram audience cannot see. Replies to yourself do travel.
- Quotes of other peoplestops
- Stopped by default: quoting a stranger republishes them to an audience that never chose to hear from them. Quoting yourself travels.
- Posts tagged #ad or #brandpartnerstops
- Stopped by default and switchable per flow. A disclosure that fails to travel with the post is a regulatory problem, not a formatting one. Tags: #ad, #brandpartner, #sponsored, #paidpartnership.
- Posts tagged #noferry or #noechostops
- Your own switch. Either tag anywhere in the post means "not this one". One of the two is the convention creators already have from other tools, so we honour it as well as ours.
Measured, not promised
How fast it is
YouTube Shorts to us
seconds to minutes
YouTube Shorts has no push, so we ask — often, and adaptively
YouTube Shorts has no push for anyone, so we poll — and we tighten the interval after a burst rather than selling you a shorter one. When you have just posted, we expect more and we look more often. When the account has been quiet for a day, we back off, because asking a sleeping account every few seconds is how a tool gets rate-limited into being slower for everybody.
Nobody in this category has push on YouTube Shorts, so a tool quoting you a fixed figure in fractions of a second is quoting the length of its cron job. Once we do have the post, the rest is the same as for a platform that streams: the rules engine decides, the splitter fits the text to Instagram, and the delivery goes out. The waiting happens before we know about your post, never after.
Setup
Set it up in three steps
- Step 1
Connect YouTube Shorts as the origin
YouTube Shorts signs in with OAuth in a browser window; we never see a password. We ask for the narrowest scope that lets us read your own posts, and the credential goes into an encrypted vault — never a log line.
- Step 2
Connect Instagram as the destination
Instagram signs in with OAuth in a browser window; we never see a password. A destination can never also be the origin of the same flow, so there is no way to build a loop that echoes into itself.
- Step 3
Dry run, then switch it on
A dry run replays your recent YouTube Shorts posts through the rules engine and shows what would have reached Instagram and what would have stopped, with the reason for each. Nothing publishes. When the list looks right, switch it on.
Fail closed
What we refuse to do
The rules the engine applies before anything reaches Instagram, in the order it applies them, read from the file the engine itself runs — so this list cannot describe a rule the product does not enforce.
- Replies to other people
- A reply to somebody on YouTube Shorts stays on YouTube Shorts: your Instagram followers would see one half of an exchange with no way to read the other. A reply in your own thread does go.
- Quotes of other people
- A quote post republishes somebody else's words to an audience they did not choose. We carry quotes of your own posts and stop the rest. There is no setting that turns this into "quote everybody".
- Anything tagged #ad or #brandpartner
- Paid posts stop by default: #ad, #brandpartner, #sponsored, #paidpartnership. Disclosure rules differ by country and by platform, and a disclosure that arrives on YouTube Shorts but not on Instagram is worse than not cross-posting at all. Switchable per flow.
- Over-limit posts, because Instagram has no thread to put them in
- Instagram allows 2,200 characters and has no native thread. Chaining separate top-level posts is not a thread, it is spam, so a longer post stops here with the count and the limit written down. Shorten it, or send it somewhere that threads.
- Instagram Trial Reels
- A Trial Reel is hidden from your own followers on purpose — that is the whole point of it. Cross-posting one defeats the reason you made it, so when Instagram is the origin, Trial Reels never leave.
- Anything we are not sure about
- The rules engine fails closed. If an adapter cannot tell us whether a post is a reply, or how long its video is, the answer is no and the ledger says which fact was missing. A missed cross-post is a click to fix; an unwanted one is public and permanent.
- Anything you tagged #noferry or #noecho
- Put either tag anywhere in a post and it stays where you wrote it. You can also set your own phrase per flow. This is checked before everything else, so it overrides every other rule on this page.
Questions
Frequently asked questions
- Can Echowide post from YouTube Shorts to Instagram automatically?
- Yes. Connect YouTube Shorts as an origin and Instagram as a destination, and every new YouTube Shorts post is republished to Instagram without you doing anything else. Nothing is queued or scheduled here.
- How long does a YouTube Shorts post take to appear on Instagram?
- YouTube Shorts offers no push to any tool, so we poll it on an interval that tightens after you have been active and relaxes while you are quiet — seconds when you are posting, minutes when you are not. Nobody can do better than polling on YouTube Shorts, and we will not sell you a shorter interval as a feature.
- What happens to a post that is too long for Instagram?
- Instagram allows 2,200 characters and has no native thread, so a longer post stops rather than being cut in half or scattered across several unconnected posts. The ledger records the character count and the limit.
- Does it cross-post my replies and quote posts?
- Not to other people. A reply to, or quote of, somebody else stops by default — your Instagram audience would see one side of a conversation. Replies within your own thread and quotes of your own posts travel. Posts tagged #ad or #brandpartner stop as well.
- Does video carry from YouTube Shorts to Instagram?
- Yes, up to 15 minutes, which is Instagram's own cap and is at or above what YouTube Shorts will hand us. Alt text and captions travel with it where both platforms support them.
- What does cross-posting YouTube Shorts to Instagram cost?
- Nothing for the first fifty cross-posts a month, then $9. There is no per-channel pricing and no faster tier: the speed on this pair depends on whether YouTube Shorts pushes to us, not on what you pay. No card to start.
Post on YouTube Shorts. We will handle Instagram.
Free for the first fifty cross-posts a month, then $9. Run a dry run before anything publishes, and read the ledger afterwards to see exactly what each platform did with your post, in its own words.