Is the same file posted everywhere?

The same vertical video and the same caption go to each platform. What differs more than the file is what each platform rewards, so identical uploads legitimately perform differently.

Which platforms are supported?

TikTok, Instagram Reels and YouTube Shorts. Starter connects 1 social account, Pro 3 and Advanced 6, each automation with its own schedule.

Does cross-posting hurt reach?

Posting the same video to different platforms is normal and not penalised. What can hurt is visible competitor watermarks, which is a reason to publish from a single source rather than downloading from one platform and re-uploading to another.

Can I schedule different times per platform?

A single scheduled post goes to all the accounts you choose at the same time. Automations each run on their own schedule, so posting times can differ between automations.

FeatureCapabilityUpdated Nov 4, 2026

Multi-Platform Posting: One Video, Every Platform, Zero Extra Work

ShortFast posts the same video and caption to TikTok, Instagram Reels and YouTube Shorts automatically, on the schedule you set, through each platform's official API, so nothing is uploaded three times. Pro ($39 a month) connects three accounts, one per platform; if your videos are already made, a scheduler such as Publer or Buffer cross-posts them instead.

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What you get

Inside Multi-Platform Posting

Auto-post to TikTok, Reels and Shorts simultaneously

One vertical 9:16 video that fits all three platforms

One caption, posted to every account you choose

Cross-platform scheduling with calendar view

Account management for multiple brands and clients

Coming soon: analytics across all connected platforms

FAQ

Common questions

Is the same file posted everywhere?: The same vertical video and the same caption go to each platform. What differs more than the file is what each platform rewards, so identical uploads legitimately perform differently.
Which platforms are supported?: TikTok, Instagram Reels and YouTube Shorts. Starter connects 1 social account, Pro 3 and Advanced 6, each automation with its own schedule.
Does cross-posting hurt reach?: Posting the same video to different platforms is normal and not penalised. What can hurt is visible competitor watermarks, which is a reason to publish from a single source rather than downloading from one platform and re-uploading to another.
Can I schedule different times per platform?: A single scheduled post goes to all the accounts you choose at the same time. Automations each run on their own schedule, so posting times can differ between automations.

More capabilities

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The complete suite of AI-powered video tools, from generation to automated publishing.

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Multi-Platform Posting: One Video, Every Platform, Zero Extra Work

Inside Multi-Platform Posting

Common questions

Explore the full toolkit

Multi-Account Posting

Video Variations

Analytics & Insights

AI Script Writer

AI Hook Generator

Smart B-Roll

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