Schedule a video or Short to YouTube

Schedule YouTube videos and Shorts from PostFast with a title, privacy, playlist, category, and a custom thumbnail.

Updated 2026-09-062 min read

1. Open the composer

From the sidebar, click New Post at the top. You'll land on the Create post composer.

2. Add content

Attach one video. YouTube posts are video-only, so images are not accepted.
Write the description in the text field. YouTube allows up to 5,000 characters.

YouTube does not allow the characters < and > anywhere in a title or description. PostFast blocks the post before it is saved if either appears.

3. Choose your YouTube channel

In the Post settings panel on the right, open the Schedule tab.
Select your YouTube channel. You can cross-post to other platforms at the same time.

4. Platform settings

In the Post settings panel, open the Platform settings tab:

Title - up to 100 characters. Leave it empty and PostFast uses the first line of your text as the title (trimmed to 100 characters) and everything after it as the description.
Privacy settings - Public, Unlisted, or Private. Public is the default.
YouTube Short - on by default. Turn it off for a regular long-form video. Shorts are vertical videos under 3 minutes.
Made for Kids - off by default. Turn it on to mark the video as suitable for children under 13, as required by COPPA.
Contains altered or synthetic content - discloses that the video contains realistic altered or synthetic content.

Under Advanced in the same tab:

Category - one of YouTube's standard categories.
Playlist - add the video to one of your channel's playlists. If a playlist you created later is missing, click Sync Playlists next to the field. If adding to the playlist fails, the video still publishes.
Custom Thumbnail - JPEG, PNG, GIF, or BMP, max 2 MB. Recommended 1280 x 720 (16:9), minimum 640 px wide. Custom thumbnails require a verified YouTube channel.

5. Add a first comment (optional)

Under the post text in the composer, fill in First Comment. It is posted automatically about 10 seconds after the video goes live, and can be up to 10,000 characters on YouTube.

6. Schedule, post, or save

Still in the Schedule tab on the right:

Click Pick time to schedule the video for a specific time.
Click Post now to publish immediately.
Click the arrow next to Post now to Save as Draft inside PostFast.

Good to know

The same clip can go to TikTok, Instagram Reels, and Facebook Reels from the same post. Each platform keeps its own Platform settings.
Analytics: views, likes, and comments, refreshed every 6 hours for the first 14 days, then daily until 60 days. You can also refresh a single post's metrics by hand.

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