Choose the flag

global search (g) Finds all the correspondences rather than stopping after the first match
global search (g) Finds all the correspondences rather than stopping after the first match
case insensitive (i) Case is ignored
multiline (m) Start and end characters (^ and $) are treated as working on each line
unicode (u) Treat the regular expression as a sequence of Unicode code points
sticky (y) Matches only from the index indicated by the lastIndex property of this regular expression
dot all make . match newline too. (s) Dot metacharacter matches all characters, including newlines

A single character of: a, b or c
[abc]

A character except: a, b or c
[^abc]

A character in the range: a-z
[a-z]

A character not in the range: a-z
[^a-z]

A character in the range: a-z or A-Z
[a-zA-Z]

Any single character
.

Alternate - match either a or b
a|b

Any whitespace character
\s

Any non-whitespace character
\S

Any digit
\d

Any non-digit
\D

Any word character
\w

Any non-word character
\W

Match everything enclosed
(?:...)

Capture everything enclosed
(...)

Zero or one of a
a?

Zero or more of a
a*

One or more of a
a+

Exactly 3 of a
a3

3 or more of a
a{3,}

Between 3 and 6 of a
a{3,6}

Start of string
^

End of string
$

A word boundary
\b

Non-word boundary
\B

Newline
\n

Carriage return
\r

Tab
\t

Null character
\0

Start of match
\G

Start of string
^

End of string
$

Start of string
\A

End of string
\Z

Absolute end of string
\z

A word boundary
\b

Non-word boundary
\B

Any single character
.

Alternate - match either a or b
a|b

Any whitespace character
\s

Any non-whitespace character
\S

Any digit
\d

Any non-digit
\D

Any word character
\w

Any non-word character
\W

Any Unicode sequences, linebreaks included
\X

Match one data unit
\C

Unicode newlines
\R

Match anything but a newline
\N

Vertical whitespace character
\v

Negation of \v
\V

Horizontal whitespace character
\h

Negation of \h
\H

Reset match
\K

Match subpattern number #
\#

Unicode property X
\pX

Unicode property or script category
\p{...}

Negation of \pX
\PX

Negation of \p
\P{...}

Quote; treat as literals
\Q...\E

Match subpattern `name`
\k{name}

Match subpattern `name`
\k<name>

Match subpattern `name`
\k'name'

Match nth subpattern
\gn

Match nth subpattern
\g{n}

Match text the nth relative previous subpattern matched
\g{-n}

Recurse nth capture group
\g<n>

Recurse nth relative upcoming subpattern
\g<+n>

Recurse nth capture group.
\g'n'

Recurse nth relative upcoming subpattern
\g'+n'

Match previously-named capture group `letter`
\g{letter}

Recurse named capture group `letter`
\g<letter>

Recurse named capture group `letter`
\g'letter'

Hex character YY
\xYY

Hex character YYYY
\x{YYYY}

Octal character ddd
\ddd

Control character Y
\cY

Backspace character
[\b]

Makes any character literal
\

Zero or one of a
a?

Zero or more of a
a*

One or more of a
a+

Exactly 3 of a
a{3}

3 or more of a
a{3,}

Between 3 and 6 of a
a{3,6}

Greedy quantifier
a*

Lazy quantifier
a*?

Possessive quantifier
a*+

Match everything enclosed
(?:...)

Capture everything enclosed
(...)

Atomic group (non-capturing)
(?>...)

Duplicate/reset subpattern group number
(?|...)

Comment group
(?#...)

Named Capturing Group
(?'name'...)

Named Capturing Group
(?<name>...)

Named Capturing Group
(?P<name>...)

Inline modifiers
(?imsxUJnxx)

Localized inline modifiers
(?imsxUJnxx:...)

Conditional statement
(?(1)yes|no)

Conditional statement
(?(R)yes|no)

Recursive Conditional statement
(?(R#)yes|no)

Conditional statement
(?(R&name)yes|no)

Lookahead conditional
(?(?=...)yes|no)

Lookbehind conditional
(?(?<=...)yes|no)

Recurse entire pattern
(?R)

Recurse first subpattern
(?1)

Recurse first relative subpattern
(?+1)

Recurse subpattern `name`
(?&name)

Match subpattern `name`
(?P=name)

Recurse subpattern called `name`
(?P>name)

Pre-define patterns before using them
(?(DEFINE)...)

Positive Lookahead
(?=...)

Negative Lookahead
(?!...)

Positive Lookbehind
(?<=...)

Negative Lookbehind
(?<!...)

Control verb
(*ACCEPT)

Control verb
(*FAIL)

Control verb
(*MARK:NAME)

Control verb
(*COMMIT)

Control verb
(*PRUNE)

Control verb
(*SKIP)

Control verb
(*THEN)

Pattern modifier
(*UTF)

Pattern modifier
(*UTF8)

Pattern modifier
(*UTF16)

Pattern modifier
(*UTF32)

Pattern modifier
(*UCP)

Line break modifier
(*CR)

Line break modifier
(*LF)

Line break modifier
(*CRLF)

Line break modifier
(*ANYCRLF)

Line break modifier
(*ANY)

Line break modifier
\R

Line break modifier
(*BSR_ANYCRLF)

Line break modifier
(*BSR_UNICODE)

Regex engine modifier
(*LIMIT_MATCH=x)

Regex engine modifier
(*LIMIT_RECURSION=d)

Regex engine modifier
(*NO_AUTO_POSSESS)

Regex engine modifier
(*NO_START_OPT)

A single character of: a, b or c
[abc]

A character except: a, b or c
[^abc]

A character in the range: a-z
[a-z]

A character not in the range: a-z
[^a-z]

A character in the range: a-z or A-Z
[a-zA-Z]

Letters and digits
[[:alnum:]]

Letters
[[:alpha:]]

ASCII codes 0-127
[[:ascii:]]

Space or tab only
[[:blank:]]

Control characters
[[:cntrl:]]

Decimal digits
[[:digit:]]

Visible characters (not space)
[[:graph:]]

Lowercase letters
[[:lower:]]

Visible characters
[[:print:]]

Visible punctuation characters
[[:punct:]]

Whitespace
[[:space:]]

Uppercase letters
[[:upper:]]

Word characters
[[:word:]]

Hexadecimal digits
[[:xdigit:]]

Start of word
[[:<:]]

End of word
[[:>:]]

Global
g

Multiline
m

Case insensitive
i

Ignore whitespace / verbose
x

Single line
s

Unicode
u

eXtra
X

Ungreedy
U

Anchor
A

Duplicate group names
J

Contents in capture group 1
$1

Contents in capture group `foo`
${foo}

Hexadecimal replacement values
\x20

Hexadecimal replacement values
\x{06fa}

Insert a tab
\t

Insert a carriage return
\r

Insert a newline
\n

Insert a form-feed
\f

Uppercase Transformation
\U

Lowercase Transformation
\L

Terminate any Transformation
\E

Newline
\n

Carriage return
\r

Tab
\t

Null character
\0

A single character of: a, b or c
[abc]

A character except: a, b or c
[^abc]

A character in the range: a-z
[a-z]

A character not in the range: a-z
[^a-z]

A character in the range: a-z or A-Z
[a-zA-Z]

Letters and digits
[[:alnum:]]

Letters
[[:alpha:]]

ASCII codes 0-127
[[:ascii:]]

Space or tab only
[[:blank:]]

Control characters
[[:cntrl:]]

Decimal digits
[[:digit:]]

Visible characters (not space)
[[:graph:]]

Lowercase letters
[[:lower:]]

Visible characters
[[:print:]]

Visible punctuation characters
[[:punct:]]

Whitespace
[[:space:]]

Uppercase letters
[[:upper:]]

Word characters
[[:word:]]

Hexadecimal digits
[[:xdigit:]]

Start of word
[[:<:]]

End of word
[[:>:]]

Any single character
.

Alternate - match either a or b
a|b

Any whitespace character
\s

Any non-whitespace character
\S

Any digit
\d

Any non-digit
\D

Any word character
\w

Any non-word character
\W

Any Unicode sequences, linebreaks included
\X

Match one data unit
\C

Unicode newlines
\R

Match anything but a newline
\N

Vertical whitespace character
\v

Negation of \v
\V

Horizontal whitespace character
\h

Negation of \h
\H

Reset match
\K

Match subpattern number #
\#

Unicode property X
\pX

Unicode property or script category
\p{...}

Negation of \pX
\PX

Negation of \p
\P{...}

Quote; treat as literals
\Q...\E

Match subpattern `name`
\k{name}

Match subpattern `name`
\k<name>

Match subpattern `name`
\k'name'

Match nth subpattern
\gn

Match nth subpattern
\g{n}

Match text the nth relative previous subpattern matched
\g{-n}

Recurse nth capture group
\g<n>

Recurse nth relative upcoming subpattern
\g<+n>

Recurse nth capture group.
\g'n'

Recurse nth relative upcoming subpattern
\g'+n'

Match previously-named capture group `letter`
\g{letter}

Recurse named capture group `letter`
\g<letter>

Recurse named capture group `letter`
\g'letter'

Hex character YY
\xYY

Hex character YYYY
\x{YYYY}

Octal character ddd
\ddd

Control character Y
\cY

Backspace character
[\b]

Makes any character literal
\

Match everything enclosed
(?:...)

Capture everything enclosed
(...)

Atomic group (non-capturing)
(?>...)

Duplicate/reset subpattern group number
(?|...)

Comment group
(?#...)

Named Capturing Group
(?'name'...)

Named Capturing Group
(?<name>...)

Named Capturing Group
(?P<name>...)

Inline modifiers
(?imsxUJnxx)

Localized inline modifiers
(?imsxUJnxx:...)

Conditional statement
(?(1)yes|no)

Conditional statement
(?(R)yes|no)

Recursive Conditional statement
(?(R#)yes|no)

Conditional statement
(?(R&name)yes|no)

Lookahead conditional
(?(?=...)yes|no)

Lookbehind conditional
(?(?<=...)yes|no)

Recurse entire pattern
(?R)

Recurse first subpattern
(?1)

Recurse first relative subpattern
(?+1)

Recurse subpattern `name`
(?&name)

Match subpattern `name`
(?P=name)

Recurse subpattern called `name`
(?P>name)

Pre-define patterns before using them
(?(DEFINE)...)

Positive Lookahead
(?=...)

Negative Lookahead
(?!...)

Positive Lookbehind
(?<=...)

Negative Lookbehind
(?<!...)

Control verb
(*ACCEPT)

Control verb
(*FAIL)

Control verb
(*MARK:NAME)

Control verb
(*COMMIT)

Control verb
(*PRUNE)

Control verb
(*SKIP)

Control verb
(*THEN)

Pattern modifier
(*UTF)

Pattern modifier
(*UTF8)

Pattern modifier
(*UTF16)

Pattern modifier
(*UTF32)

Pattern modifier
(*UCP)

Line break modifier
(*CR)

Line break modifier
(*LF)

Line break modifier
(*CRLF)

Line break modifier
(*ANYCRLF)

Line break modifier
(*ANY)

Line break modifier
\R

Line break modifier
(*BSR_ANYCRLF)

Line break modifier
(*BSR_UNICODE)

Regex engine modifier
(*LIMIT_MATCH=x)

Regex engine modifier
(*LIMIT_RECURSION=d)

Regex engine modifier
(*NO_AUTO_POSSESS)

Regex engine modifier
(*NO_START_OPT)

Zero or one of a
a?

Zero or more of a
a*

One or more of a
a+

Exactly 3 of a
a{3}

3 or more of a
a{3,}

Between 3 and 6 of a
a{3,6}

Greedy quantifier
a*

Lazy quantifier
a*?

Possessive quantifier
a*+

Start of match
\G

Start of string
^

End of string
$

Start of string
\A

End of string
\Z

Absolute end of string
\z

A word boundary
\b

Non-word boundary
\B

Global
g

Multiline
m

Case insensitive
i

Ignore whitespace / verbose
x

Single line
s

Unicode
u

eXtra
X

Ungreedy
U

Anchor
A

Duplicate group names
J

Contents in capture group 1
$1

Contents in capture group `foo`
${foo}

Hexadecimal replacement values
\x20

Hexadecimal replacement values
\x{06fa}

Insert a tab
\t

Insert a carriage return
\r

Insert a newline
\n

Insert a form-feed
\f

Uppercase Transformation
\U

Lowercase Transformation
\L

Terminate any Transformation
\E

A single character of: a, b or c
[abc]

A character except: a, b or c
[^abc]

A character in the range: a-z
[a-z]

A character not in the range: a-z
[^a-z]

A character in the range: a-z or A-Z
[a-zA-Z]

Any single character
.

Alternate - match either a or b
a|b

Any whitespace character
\s

Any non-whitespace character
\S

Any digit
\d

Any non-digit
\D

Any word character
\w

Any non-word character
\W

Match everything enclosed
(?:...)

Capture everything enclosed
(...)

Zero or one of a
a?

Zero or more of a
a*

One or more of a
a+

Exactly 3 of a
a{3}

3 or more of a
a{3,}

Between 3 and 6 of a
a{3,6}

Start of string
^

End of string
$

A word boundary
\b

Non-word boundary
\B

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.xlsx ,.xlsm ,.xlsb ,.xls ,.xlw ,.xlr ,.csv ,.json ,.doc ,.docx ,.xml

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Regex Test

A regex test is a tool that lets you test on a regular expression, which is a pattern you type into a text field. It's used to check for a specific pattern in the text. Regular expressions are a ubiquitous part of programming languages.Learn how to use regular expressions to make your everyday life easier.

Common Tokens

General Token

Anchors

Meta Sequences

Quantifiers

Group Constructs

characters Classes

Flags/Modifiers

Substitutions

All Regex Tokens

Regex Test