regex101: JWT pattern

Pro

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

Character Class[yw]

ythe literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

Character Class[A-Za-z0-9-_]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:e[yw][A-Za-z0-9-_]+)?

?repeats the group contents below at most once:

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

Character Class[yw]

ythe literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

wthe literal w (119₁₀ / 167₈ / 77₁₆) (case sensitive)

Character Class[A-Za-z0-9-_]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-Za-z0-9-_]{2,}

{2,}matches at least 2 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Non-Capturing Group(?:(?:\.[A-Za-z0-9-_]{2,}){2})?

?repeats the group contents below at most once:

Non-Capturing Group(?:\.[A-Za-z0-9-_]{2,}){2}

{2}repeats the group contents below exactly 2 times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[A-Za-z0-9-_]{2,}

{2,}matches at least 2 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Global pattern flags

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

26 tokens

Regular Expression

e[yw][A-Za-z0-9-_]+\.(?:e[yw][A-Za-z0-9-_]+)?\.[A-Za-z0-9-_]{2,}(?:(?:\.[A-Za-z0-9-_]{2,}){2})?

Unit Tests

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