YouTube Title, Description & Chapter
Visualises 100-char title limit, 70-char mobile truncation cutoff, 5,000-char description space, and validates 00:00 chapter timestamps.
1. Video Title & Description
First 150 characters appear above the 'Show more' fold in mobile and search snippets.
2. Validation & SEO Preview
YouTube Chapter Requirements
- First chapter starts exactly at 00:00 (or 0:00)
- At least 3 valid chapters present (Found: 5)
- Timestamps listed in strictly ascending chronological order
- Each chapter is at least 10 seconds in duration
Interactive Chapter Timeline Preview
Search & Mobile Feed Mockup
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About this tool
How to use it
- Enter or paste your YouTube video title into the title box to track character count against the 100-character ceiling and 60-70 character mobile truncation threshold.
- Write or paste your video description into the description area, tracking total length towards the 5,000-character limit.
- Include your chapter timestamps in MM:SS or H:MM:SS format followed by the chapter label (e.g., 00:00 Intro).
- Review the automated YouTube chapter checklist to verify that all 4 platform rules are satisfied (starts at 00:00, at least 3 chapters, ascending order, >=10s duration).
- Use the interactive scrub bar preview to visually inspect how YouTube will slice your video timeline into chapters.
- Click Auto-Fix & Sort Timestamps to automatically order timestamps chronologically, insert 00:00 Intro if missing, and format clean spacing.
Why it matters
YouTube video metadata directly impacts organic search rankings, suggested video placement, and click-through rates (CTR). Title truncation on mobile devices hides crucial hooks, while malformed chapter timestamps break YouTube's scrubber navigation. An interactive pre-flight validator ensures your video launches with perfect SEO formatting.
When to use it
Use when publishing or updating YouTube long-form videos, podcasts, webinars, tutorials, or educational courses.
Good to know
YouTube requires timestamps to start at exactly 00:00 (or 0:00). If the first chapter starts at 00:05 or 00:10, YouTube will completely ignore all chapter markers across the entire video.
Common questions
What is the maximum character limit for YouTube video titles?
YouTube allows a maximum of 100 characters in video titles. However, titles longer than 60 to 70 characters often get truncated with an ellipsis on mobile search feeds.
Why are my YouTube chapters not working?
YouTube chapters will fail to show on your video scrubber if your first chapter does not begin at 00:00, if you have fewer than 3 chapters, if any chapter is shorter than 10 seconds, or if timestamps are out of chronological order.
How many characters are allowed in a YouTube video description?
YouTube allows up to 5,000 characters in the description box, including links, chapters, and hashtags.
How many hashtags should I put in a YouTube video description?
YouTube displays the first 3 hashtags prominently. You can include several relevant tags, but do not exceed 15 hashtags. Using over 60 hashtags causes YouTube to completely ignore every hashtag on your video.
Can video chapters include hours (e.g. 1:15:30)?
Yes. When a video exceeds 60 minutes, use the H:MM:SS or HH:MM:SS format (such as 1:15:30). YouTube will parse hours, minutes, and seconds automatically.
Does this tool upload my unpublished video drafts to any server?
No. All text parsing, character calculations, and chapter validation run purely locally in your browser with zero remote transmission.