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Find and Replace (Regex)

Find and replace text in one paste — with literal matching or full JavaScript regex, case-sensitivity and whole-word toggles, multiline / dot-all / Unicode-aware flags, and capture-group references (`$1`, `$&`, `$\``) in the replacement. Watch the live match count update as you type so you know exactly what will change before you copy.

टूल सारांश

यो टूलले संरचित इनपुट लिन्छ र सर्भर अपलोड बिना ब्राउजरमै निर्धारित आउटपुट दिन्छ।

टूलको नाम
Find and Replace (Regex)
इनपुट उद्देश्य
बदल्न, प्रमाणीकरण गर्न वा विश्लेषण गर्न स्रोत सामग्री प्रदान गर्नुहोस्।
आउटपुट उद्देश्य
कपी, पुन: प्रयोग वा डिबगिङका लागि उपयुक्त सामान्यीकृत आउटपुट प्राप्त गर्नुहोस्।
उदाहरण इनपुट
The quick brown fox jumps over the lazy fox. Foxes are fast. Find: fox · Replace: cat · Whole word: on
उदाहरण आउटपुट
The quick brown cat jumps over the lazy cat. Foxes are fast.
Recent inputs0

Your last 5 inputs will appear here.

3 matches
The quick brown cat jumps over the lazy dog.
The quick brown cat jumps over the lazy dog.
cates are fast.
Replacement syntax cheatsheet
$& — the whole match
$1, $2, ... — capture group N
$` — text before the match
$' — text after the match
$$ — literal dollar sign
\n \t — newline / tab (in replacement)

टूल परिचय

Find and replace text in one paste — with literal matching or full JavaScript regex, case-sensitivity and whole-word toggles, multiline / dot-all / Unicode-aware flags, and capture-group references (`$1`, `$&`, `$\``) in the replacement. Watch the live match count update as you type so you know exactly what will change before you copy.

टूल अवलोकन

Most online find-and-replace tools either don't support regex or hide capture groups behind a paywall. This one runs entirely in your browser, supports every flag the underlying JavaScript engine offers, and gracefully reports invalid patterns instead of silently doing nothing. Pair it with the existing Regex Tester for crafting a pattern, then bring it here to apply the replacement at scale.

प्रयोगका केसहरू

  • Bulk-rename variables or imports across a pasted code block
  • Reformat a list of items with a regex template
  • Strip URL parameters across many lines at once
  • Replace placeholder values in an email template
  • Convert date formats with capture groups (e.g., 2024-01-15 → 15/01/2024)

इनपुट/आउटपुट उदाहरण

Whole-word match leaves 'Foxes' (different word) untouched.
इनपुट उद्देश्य
The quick brown fox jumps over the lazy fox.
Foxes are fast.
Find: fox · Replace: cat · Whole word: on
आउटपुट उद्देश्य
The quick brown cat jumps over the lazy cat.
Foxes are fast.

अक्सर सोधिने प्रश्नहरू

What regex flavor is this?+
JavaScript regex. Everything supported by V8 / SpiderMonkey works — lookbehind, named groups, Unicode property escapes, etc.
Can I reference capture groups in the replacement?+
Yes. $1 through $9 are capture groups, $& is the whole match, $` is text before, $' is text after, and $$ is a literal dollar sign.
Why is 'Whole word' disabled in regex mode?+
In regex mode you can add `\b...\b` yourself for precise control. The whole-word checkbox is a convenience for literal mode.
Will it stop on infinite-loop regex patterns?+
Yes — the engine guards against zero-width matches so a pattern that matches the empty string doesn't lock the page.

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