Crosspost from TikTok to Instagram Automatically
Auto post TikTok to Instagram instantly — no downloads, no re-uploads, no manual work. Just publish on TikTok and your content appears on Instagram.
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The reality of posting TikToks to Instagram Reels
! TikTok watermark gets deprioritized in Reels feed
+ ! No native auto-post from TikTok to Instagram
+ ! Captions need to be adapted for Instagram audience
+ ! Music licensing differs between platforms
↓ There's an easier way
What You Need to Know
How creators crosspost TikToks to Reels today
The most common manual workflow: open TikTok, save your video without posting it (so there is no watermark), or download a posted TikTok using a third-party remover like SnapTik or SSSTik.
Then open Instagram, select Reels, upload the clean video, rewrite the caption, and publish.
Make your Reels look native, not recycled
Instagram rewards content that feels made for Instagram.
Three things separate a native-looking Reel from an obvious repost.
Skip the manual work with PostOnce
PostOnce connects your TikTok account to Instagram and handles the crosspost automatically.
When you publish on TikTok, PostOnce picks up the video, removes the watermark, reformats the caption for Reels, and schedules or immediately posts to your Instagram account.
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Features
How PostOnce Handles It
Set up TikTok to Instagram crossposting once. PostOnce automates the rest.
Easy TikTok Crossposting Setup
Connect your TikTok and Instagram accounts, choose your crosspost rules, and you're done.
Setup takes under 60 seconds. After that, everything runs automatically in the background.
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Native Video Upload to Instagram
When you crosspost TikTok to Instagram, PostOnce uploads the actual video file — not a link, not a preview.
Your TikTok content appears as a native Instagram post, indistinguishable from content uploaded directly.
Start your free trialCustom Crosspost Rules
Not every TikTok post belongs on Instagram. Set hashtag filters, content type rules, or account-level controls to choose what gets crossposted.
Only the content you want on Instagram ends up there.
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Auto Post to Multiple Platforms
Don't stop at TikTok to Instagram crossposting. Auto post your TikTok content to YouTube Shorts, Facebook, LinkedIn, Threads, and more — all at once.
One post, everywhere. Each platform gets a native upload with adapted formatting.
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Real-Time Automation
PostOnce monitors your TikTok account and automatically crossposts new content to Instagram.
No scheduling, no batching. Publish on TikTok and it appears on Instagram within minutes — fully automated TikTok to Instagram posting.
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TikTok vs Instagram at a Glance
| Spec | TikTok | |
|---|---|---|
| Caption Limit | 4,000 chars | 2,200 chars |
| Max Video Length | 10min | 1h |
| Preferred Aspect Ratio | 9:16 | 9:16 |
| Max Video File Size | 4GB | 4GB |
| Carousel Support | Up to 35 items | Up to 10 items |
| Hashtag Strategy | Unlimited | Up to 30 |
| Link Support | No | No |
| Primary Audience | 16-34 | 18-34 |
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Under 60 seconds. Connect both your TikTok and Instagram accounts, choose your filter rules, and you're done. New TikTok posts will automatically appear on Instagram.
Yes, both platforms use 9:16 as their preferred format, so your videos transfer without any reformatting.
Yes. Use hashtag filters to control which posts crosspost. For example, add #crosspost to TikTok captions and only those posts will go to Instagram. Or exclude specific hashtags to skip certain content.
PostOnce intelligently adapts your captions from TikTok's 4,000 character limit to fit Instagram's 2,200 character limit, preserving your key message.
Start Crossposting TikTok to Instagram
Connect your TikTok and Instagram accounts and start crossposting in minutes. No technical setup required.
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