regex101: PCRE (Legacy) Match Workspace

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 2(\b(img|style|script|head|link)\b)

\ban ASCII word boundary

Group 3(img|style|script|head|link)

1st Alternativeimg

imgthe literal text img (case sensitive)

2nd Alternativestyle

stylethe literal text style (case sensitive)

3rd Alternativescript

scriptthe literal text script (case sensitive)

4th Alternativehead

headthe literal text head (case sensitive)

5th Alternativelink

linkthe literal text link (case sensitive)

\ban ASCII word boundary

Group 4(([^>]*\/>)|([^\7]*(<\/\2[^>]*>)))

1st Alternative([^>]*\/>)

Group 5([^>]*\/>)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative([^\7]*(<\/\2[^>]*>))

Group 6([^\7]*(<\/\2[^>]*>))

Negated Character Class[^\7]*

*matches any number of characters outside the set below:

\7the literal (7₈ / 7₁₀ / 7₁₆)

Group 7(<\/\2[^>]*>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\2the text saved by group 2

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative(<\bimg\b)[^>]*>

Group 8(<\bimg\b)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\ban ASCII word boundary

imgthe literal text img (case sensitive)

\ban ASCII word boundary

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

3rd Alternative(\b(background|style)\b=\s*"[^"]*")

Group 9(\b(background|style)\b=\s*"[^"]*")

\ban ASCII word boundary

Group 10(background|style)

1st Alternativebackground

backgroundthe literal text background (case sensitive)

2nd Alternativestyle

\ban ASCII word boundary

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\s*any whitespace character, repeated any number of times

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^"]*

"the literal " (34₁₀ / 42₈ / 22₁₆)

Global pattern flags

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

Search reference

Regular Expression

(<(\b(img|style|script|head|link)\b)(([^>]*\/>)|([^\7]*(<\/\2[^>]*>)))|(<\bimg\b)[^>]*>|(\b(background|style)\b=\s*"[^"]*"))

Unit Tests

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