# MD055 - Keep table formatting consistent
Aliases: `table-pipe-style`
## What this rule does
## Why this matters
- **Visual consistency**: Mixed pipe styles make tables look messy and unprofessional
- **Easier editing**: Consistent formatting makes it easier to add or modify table rows
- **Better alignment**: Uniform pipe placement helps maintain column alignment
- **Parser compatibility**: Some Markdown parsers require specific pipe styles
## Examples
### ✅ Correct (with leading and trailing pipes)
```markdown
| Alice | Manager | Sales |
| Bob | Developer | IT |
```
### ✅ Correct (without leading and trailing pipes)
```markdown
Alice | Manager | Sales
Bob | Developer | IT
```
### ❌ Incorrect (mixed styles)
```markdown
Alice | Manager | Sales
| Bob | Developer | IT |
```
### 🔧 Fixed
```markdown
| Alice | Manager | Sales |
| Bob | Developer | IT |
```
## Configuration
```toml
[MD055]
style = "consistent" # Options: see below
```
### Style options
- **`consistent`** (default): Use the most prevalent style in the table (in case of a tie, `leading-and-trailing` is preferred as it's most widely used)
- **`leading-and-trailing`**: Require pipes at start and end: `| cell |`
- **`leading-only`**: Require pipes only at start: `| cell`
- **`trailing-only`**: Require pipes only at end: `cell |`
- **`no-leading-or-trailing`**: No pipes at start or end: `cell`
## Automatic fixes
This rule can automatically fix issues by:
- Adding missing leading pipes when required
- Adding missing trailing pipes when required
- Removing extra pipes when not allowed
- Making all rows match the configured style
## Learn more
- [Markdown Guide: Tables](https://www.markdownguide.org/extended-syntax/#tables)
- [GitHub Flavored Markdown: Tables](https://github.github.com/gfm/#tables-extension-)
## Related rules
- [MD056 - Keep table column count consistent](md056.md)
- [MD058 - Add blank lines around tables](md058.md)