YouTube Description Formatting: Hidden Features Most Creators Don't Know About

Most YouTube descriptions look the same: a wall of plain text, a few links, maybe some timestamps. Not because creators don't care, but because almost nobody knows YouTube descriptions support real formatting.

Bold text. Italics. Strikethrough. Bullet lists. Even headings.

It's all there. It's just hidden well enough that most creators never find it. And some of the most useful options aren't obvious at all.

Here's how they work.

Why most creators don't know this formatting exists

Two things keep these formatting options hidden.

1. It's invisible while you write. The description box in YouTube Studio is plain text. When you type formatting symbols, you see the symbols, not the result. The formatting only renders once the video is published and someone views the watch page. So unless you went looking, you'd never know it worked.

2. The syntax isn't standard Markdown. If you've used Slack, Discord, Notion, or any Markdown editor, you've learned **bold** and ~~strikethrough~~. YouTube doesn't use either. It uses single-character symbols instead. Paste standard Markdown into a description and some of it shows up as literal asterisks and tildes on your published video.

Let's fix both problems.

Inline text formatting

Format	Type this	Notes
Bold	`text`	Single asterisk on each side
Italic	`_text_`	Underscore on each side
~~Strikethrough~~	`-text-`	Single hyphen on each side

The two traps

These are the mistakes almost everyone makes at least once:

Bold is a single asterisk. *like this*, not **like this**. The double asterisk most people reach for is not YouTube's syntax.
Strikethrough is a single hyphen. -like this-, not ~~like this~~. The tilde version renders as literal tildes on your watch page.

One more detail: the symbols have to touch the text. *bold* works; * bold * doesn't. A space after the opening symbol changes its meaning entirely. More on that in the lists section.

Headings: the best-kept secret

This is the one that surprises people. YouTube descriptions support heading levels:

# Heading      → Large heading
## Heading     → Medium heading
### Heading    → Smaller heading

Headings are perfect for breaking a long description into scannable sections, so viewers can jump straight to what they came for:

## Links
## Chapters
## About This Video
## Sponsors

Note the space after the #. That's what separates a heading from a hashtag. #Links is a hashtag; # Links is a heading.

Lists

Bullet lists: start a line with a hyphen, an asterisk, or a plus sign, followed by a space.

- Camera: Sony ZV-E10
* Mic: Rode VideoMic GO II
+ Lights: two softboxes

Numbered lists: start a line with a number and a period.

1. Shut off the water
2. Disconnect the old line
3. Install the new one

Watch the spacing, because some of the same symbols do double duty. - text (hyphen, then a space) starts a bullet. -text- (hyphens on both sides, touching the text) is strikethrough. It works the same way with asterisks: * text is a bullet, and *text* is bold.

Chapters (timestamps)

Some description syntax does more than format text. Timestamps are the best example: when formatted correctly, YouTube can turn them into clickable chapters on the video's progress bar.

0:00 Intro
1:42 Shutting off the water
3:10 Reconnecting the line

For chapters to activate, follow three rules:

The first timestamp must be 0:00.
You need at least three timestamps, listed in chronological order.
Each chapter must be at least 10 seconds long.

Break any one of these and YouTube won't generate chapters.

Automatic linking (no syntax needed)

Some things link themselves:

URLs: on long-form videos, full URLs become clickable once your channel has advanced features enabled.
@handles: mention a channel with @handle and it links to that channel.
#hashtags: they become clickable, and the first three from your description appear at the top of the description box, above the text itself. They show in gray in the collapsed view, but they're still clickable.

The catch: Markdown-style links like…

[click here](https://example.com)

do not work. You can't hide a URL behind anchor text. Paste the raw URL, and if you want context, put a label before it:

Free template: https://example.com/template

Emojis and Unicode "fonts"

Two more options work because they're characters, not formatting:

Emojis display normally. They make handy visual markers for sections and links (📌 Links, ⏱️ Chapters).
Unicode "fancy" text, like 𝗯𝗼𝗹𝗱 𝘀𝗮𝗻𝘀 or 𝓈𝒸𝓇𝒾𝓅𝓉, which you make with online font generators and paste in. These aren't real fonts. They're lookalike symbols from the Unicode character set, so YouTube shows them like any other text.

Use fancy text sparingly. Screen readers often read it letter by letter or skip it entirely. And because the characters aren't regular letters, words written this way may not show up in search. It works for a decorative label, but it's a poor choice for keywords or anything important.

What doesn't work

Save yourself the trial and error. These don't render in YouTube descriptions:

**bold** and ~~strikethrough~~: the double-character Markdown versions. Use *bold* and -strikethrough-.
[text ](url) links: paste raw URLs instead.
Images, code blocks, blockquotes, and tables: none of them render.
Colors, font settings, and text alignment: not supported. Unicode "fonts" are the one workaround, covered above.

If you're copying a description from a Markdown document, a blog post, or an AI tool, check for these before you paste. They're the most common reason a description looks broken after publishing.

Practical limits to plan around

5,000 characters maximum. Formatting symbols and spaces both count toward the limit, so a heavily formatted description fills up faster than it looks.
Only the first few lines show before "...more." Put your hook and your most important link there.
You can't see any of it in Studio. Everything in this guide only appears on the published watch page.

That last point is the real problem. You can know every rule and still publish a description with a stray ** or a strikethrough that shows up as tildes, and not find out until viewers are already seeing it.

Preview your description before you publish

That's exactly why we built the TubeThink Description Formatter, a free tool that shows you what your description will look like on YouTube before you hit publish.

Paste in your description and see the bold, italics, strikethrough, headings, and lists rendered the way viewers will see them. Catch the double-asterisk bold and tilde strikethrough before they go live, and get your description right the first time.

Try the free Description Formatter

No more publishing, checking, editing, and republishing. Format it, preview it, ship it.

Quick reference cheat sheet

*bold*              _italic_            -strikethrough-

# Large heading     ## Medium heading   ### Small heading

- Bullet item       * Bullet item       + Bullet item

1. Numbered item

0:00 Chapter name   (first must be 0:00, 3+ chapters, 10s+ each)

Raw URLs, @handles, and #hashtags link automatically

Emojis and Unicode "fancy" text display as-is