a Markdown image
Matches a Markdown image. It finds the match anywhere inside the text. There are 2 capture groups.
Pattern
/!\[([^\]]*)\]\(([^)]+)\)/- Match scope
- anywhere inside the text
- Capture groups
- 2
- What it catches in the first example
- 
Try it yourself
Type any text and the parts this expression catches are highlighted. It runs in your browser and is never sent anywhere.
before  after
2 matches
Examples that match
- 
- before  after
Examples that do not match
- [link](a.com)
- no image here
Other expressions in this group
from ['\"]([^'\"]+)['\"]the path in an import statement#[0-9a-fA-F]{6}\ba hex colour inside running textTODO:?\s*(.*)a TODO note left in a comment\d+(px|em|rem|%)a number with a CSS unit^[-*+]\s+(.+)$a Markdown list item--[^\n]*a SQL line comment\$\{?([A-Z_][A-Z0-9_]*)\}?a shell environment variable[A-Za-z0-9_-]{11}a YouTube video idHow to read this
- With ^ and $ around it, the whole string must match; without them the match can sit anywhere. Always anchor an expression you use for validation.
- Round brackets ( ) capture what they wrap. When you only need grouping, write (?: ) so the numbering of later groups does not shift.
- Every expression here is checked against its examples. Even so, "looks like an email" and "is a real inbox" remain different questions.
- Nested open-ended repeats such as (a+)+ can blow up on certain inputs. Look for that shape before pasting someone else’s expression into your code.
Frequently asked questions
Q. What is the regex for a Markdown image?
!\[([^\]]*)\]\(([^)]+)\).
Q. Which strings match?
Text like  matches; text like [link](a.com) does not.
Q. Does the whole string have to match?
No. It finds the part anywhere inside the text. Add ^ and $ around it if you want a whole-string check.
Q. How do I use what it caught?
There are 2 capture groups, so you can read them from match[1] onwards.