Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • 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
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • 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

Regular Expression
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"""width""\s*:\s*(?'width'\d+).+?""height""\s*:\s*(?'height'\d+).+?""url""\s*:\s*\""(?'url'.+?)"""; string input = @"<pre>#34;, ""createdAt"": ""2018-07-30T13:33:21.373947""}, {""uid"": ""c442c352934545b183e16ce9aebd91cb"", ""width"": 2048, ""options"": {""format"": ""R"", ""quality"": 88}, ""updatedAt"": ""2018-08-01T17:51:24.738232"", ""height"": 2048, ""size"": 618478, ""url"": ""https://media.sketchfab.com/urls/ea1adc30399045a2b101e16ba65a856f/dist/textures/a4291782af5f4ce39e637c89ec91fa9b/c442c352934545b183e16ce9aebd91cb.jpeg"", ""createdAt"": ""2018-08-01T17:51:25.334608""}, {""uid"": ""84275b9d01b54836893e355991288c2f"", ""width"": 1024, ""options"": {""format"": ""R"", ""quality"": 92}, ""updatedAt"": ""2018-08-01T17:51:25.341010"", ""height"": 1024, ""size"": 220485, ""url"": ""https://media.sketchfab.com/urls/ea1adc30399045a2b101e16ba65a856f/dist/textures/a4291782af5f4ce39e637c89ec91fa9b/84275b9d01b54836893e355991288c2f.jpeg"", ""createdAt"": ""2018-08-01T17:51:25.451079""}, {""uid"": ""88897653dc004ded9faee4eaf2fa0373"", ""width"": 512, ""options"": {""format"": ""R"", ""quality"": 95}, ""updatedAt"": ""2018-08-01T17:51:25.456671"", ""height"": 512, ""size"": 83896, ""url"": ""https://media.sketchfab.com/urls/ea1adc30399045a2b101e16ba65a856f/dist/textures/a4291782af5f4ce39e637c89ec91fa9b/88897653dc004ded9faee4eaf2fa0373.jpeg"""; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx