OnePost - Post to YouTube, Instagram, TikTok Simultaneously

Publish to YouTube, Instagram & TikTok in one click

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Updated Jul 2026 · Added Jul 2026

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What is Onepost?

OnePost is a mobile-first platform that lets creators publish videos to YouTube Shorts, Instagram Reels, and TikTok simultaneously with a single click. It automatically adapts your video to each platform's format requirements, eliminating manual cross-posting and re-exports. Designed for content creators who want to maximize reach without friction or repetitive work.

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Key Features of Onepost

Single-click simultaneous publishing to YouTube Shorts, Instagram Reels, and TikTok
Automatic format adaptation for each platform
Mobile-first design for publishing from your phone
OAuth-based secure authentication
Drag-and-drop video upload (MP4, MOV, AVI, MKV up to 4GB)
Customizable captions per platform
Encrypted account access

Who Should Use Onepost?

Publish short-form video content across multiple platforms without manual cross-posting

Maximize video reach by distributing to YouTube, Instagram, and TikTok simultaneously

Streamline content creation workflow for mobile creators

Manage multiple social media accounts from one dashboard

Onepost: Pros & Cons

✓Pros

One-click publishing saves significant time compared to manual cross-posting
Automatic format optimization eliminates need for re-exports per platform
Secure OAuth authentication protects account credentials
Simple, transparent pricing with no hidden fees
7-day free trial requires no credit card
Flexible plan changes anytime
Mobile-optimized interface

✕Cons

Limited to three platforms (YouTube Shorts, Instagram Reels, TikTok)
Pro plan (multi-account, collaboration, advanced analytics) not yet available
Maximum file size of 4GB may limit some video productions

Frequently Asked Questions about Onepost

Can I publish to YouTube Shorts, Instagram Reels, and TikTok all at once, or do I have to send them separately?

OnePost publishes to all three platforms simultaneously with a single click. It automatically adapts your video to each platform's aspect ratio, resolution, and technical requirements, so you do not have to re-export or reformat the file for each destination.

What video formats and file sizes does OnePost accept?

OnePost accepts MP4, MOV, AVI, and MKV files up to 4GB each. You upload via drag-and-drop on the mobile app, so check whether your video's file size and format fall within those limits before you commit to a workflow.

Can I add different captions or text to the same video on each platform?

Yes. OnePost lets you customize captions per platform, so you can tailor your on-screen text or hashtags for YouTube Shorts, Instagram Reels, and TikTok individually before you publish.

Does the free trial require a credit card?

No. OnePost's 7-day free trial requires no credit card upfront. You can test the Starter features across all three platforms before you decide to pay.