Regular Expressions 101

Group 1(m\.|www\.)?

?repeats the group contents below at most once:

1st Alternativem\.

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternativewww\.

wwwthe literal text www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

instagramthe literal text instagram (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

Non-Capturing Group(?:/p/|/reel/)

1st Alternative/p/

/p/the literal text /p/ (case sensitive)

2nd Alternative/reel/

/reel/the literal text /reel/ (case sensitive)

Group 2([\w-/]+)

Character Class[\w-/]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(m\.|www\.)?instagram\.com(?:/p/|/reel/)([\w-/]+)

Test String
New

www.instagram.com/p/ClBi6ymLv-f?igshid=YWJhMjlhZTc=
m.instagram.com/p/ClBi6ymLv-f?igshid=YWJhMjlhZTc=
instagram.com/p/ClBi6ymLv-f?igshid=YWJhMjlhZTc=
instagram.com/p/ClBi6ymLv-f
www.instagram.com/reel/ClBi6ymLv-f?igshid=YWJhMjlhZTc=
m.instagram.com/reel/ClBi6ymLv-f?igshid=YWJhMjlhZTc=
instagram.com/reel/ClBi6ymLv-f?igshid=YWJhMjlhZTc=
instagram.com/reel/ClBi6ymLv-f

Substitution
Processing...

$1imginn.com/p/$2

Regular Expression

Test StringNew

SubstitutionProcessing...

Test String
New

Substitution
Processing...