Regex Tester

Test regular expressions with match highlighting, capture groups, flags and explanations.

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Options

Flags

g — find all matches

Pattern

Test string

Matches

Release: 2026-10-01 and backup 2025-12-31.

Match 1
2026-10-01
Match 2
2025-12-31

Capture groups

Match 1
Group 1 (year)
2026
Group 2 (month)
10
Group 3 (day)
01
Match 2
Group 1 (year)
2025
Group 2 (month)
12
Group 3 (day)
31

Explanation

(?<year>Named capturing group
\dDigit (0–9)
{4}Repeat quantifier
)End group
-Literal character
(?<month>Named capturing group
\dDigit (0–9)
{2}Repeat quantifier
)End group
-Literal character
(?<day>Named capturing group
\dDigit (0–9)
{2}Repeat quantifier
)End group