YouTube Title Length Checker
A YouTube title length checker is a tool that counts the characters in a video title and compares them with…
Free YouTube description length checker
Count your description against the 5,000 limit and see what viewers read first.
Result
0Characters / 5,000
0Links
0Hashtags
Search result snippet style
Watch page style (above the fold)
12,431 views 2 days ago
Approximate preview. Search snippets usually show 1 or 2 lines and the watch page shows about 3 lines before more; the exact cut depends on the device.
The free youtube description length checker runs in your browser, needs no sign-up and never sends what you type anywhere.
Quick answer
This YouTube description length checker counts your description against the official 5,000 character limit, previews the lines shown in search and above the fold on the watch page, and checks links, hashtags and chapter timestamps. Only about the first 100 to 150 characters show before more, so put the topic and key link there.
What is a youtube description checker?
A YouTube description length checker is a tool that counts the characters in a video description against the 5,000 character maximum. It also wraps the text into a search snippet and a watch page box to show the visible lines, and checks hashtags and timestamps against YouTube Help rules.
How do you use the YouTube Description Checker?
- Paste your full video description, including links, chapters and hashtags.
- Add the video title so the preview and keyword check are more accurate.
- Check the status box: green means 5,000 characters or fewer.
- Read the search snippet and watch page previews and make sure the first lines explain the video.
- Fix any warnings about chapters, hashtags, invalid characters or buried links, then paste it into YouTube Studio.
What is the YouTube description character limit?
Video descriptions can be up to 5,000 characters and cannot include invalid characters, according to YouTube Help. Spaces, line breaks, links and hashtags all count. Most strong descriptions use 200 to 1,000 characters plus chapters and links.
How much of a YouTube description shows before more?
Usually about 100 to 150 characters, roughly the first 2 or 3 lines, show before viewers click more on the watch page, and search results show even less. Put a clear summary with your main keyword and most important link in that opening section.
How do I add chapters in a YouTube description?
List timestamps on separate lines, with the first one at 00:00, at least three timestamps in ascending order, and each chapter at least 10 seconds long. YouTube then splits the progress bar into chapters automatically. The tool checks these three rules for you.
Quick reference
| Item | YouTube rule | Tip |
|---|---|---|
| Description length | Max 5,000 characters | Summary first, details after |
| Invalid characters | Not allowed | Avoid < and > |
| Hashtags by the title | Up to 3 may show | Put your best 3 first |
| Too many hashtags | Over 60 means all are ignored | Use 3 to 5 |
| Chapters | Start at 00:00, 3+ timestamps, 10 s min | Name chapters with keywords |
Worked example
Example
Example: the default description is about 455 characters with 1 link, 5 timestamps starting at 00:00 and 3 hashtags. It passes the 5,000 limit, the chapter rules and the hashtag rule. About 170 characters show above the fold, enough for the topic sentence, but the checklist link is hidden until viewers click more.
Frequently asked questions
Is the preview exactly what YouTube shows?
No. It is an approximate preview with a generic look. YouTube shows descriptions differently on phones, TVs and desktop and changes its layout over time. Use the cut points as a guide for what to put first.
Do YouTube descriptions help SEO?
Yes, they help YouTube and Google understand the video. YouTube Help notes that search matches terms in the title and description. Write a natural summary with your main keywords early, rather than a list of tags.
Should I use all 5,000 characters?
Not necessarily. A clear 200 to 1,000 character description with chapters and a few useful links is often enough. Use more space for transcripts, recipes, resources or show notes when they genuinely help viewers.
Where do hashtags go in a YouTube description?
Hashtags can go anywhere in the description, but most creators add 3 to 5 at the end. YouTube may show up to three of them by the title. Avoid more than 60, because then YouTube ignores all of them.
Why are my chapters not showing?
Check that the first timestamp is 00:00, that there are at least three timestamps in ascending order and that each chapter lasts at least 10 seconds. Chapters may also be turned off in the video settings.
Does this tool upload my description?
No. All counting and previews happen in your browser. Your description and links are never sent to a server or stored, so you can safely check drafts for unreleased videos.
Sources
Facts checked against these official pages. Read how I check facts in my editorial policy.
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