Free Advanced Find & Replace

Power replacing for developers: full regular expressions with capture groups ($1…$9), whole-word mode and case control — crash-proof.

Word Counter

Runs entirely in your browser — paste text and watch the results update instantly. Nothing is uploaded.

100% Client-Side — Your text stays in your browser. Nothing is uploaded.

How to use this tool

  1. 1

    Paste your content

    Logs, code, CSV dumps or prose — the engine handles megabytes locally.

  2. 2

    Write your pattern

    Regex arrives pre-enabled: e.g. '(\w+)@(\w+)\.com' → '$1 at $2 dot com'. Capture groups use $1…$9.

  3. 3

    Replace safely

    Invalid patterns show an inline alert instead of breaking — fix and continue without losing anything.

Key features

PatternBehavior
(\w+)@(\S+)\.com$1/$2 capture groups usable in replacement
\bcat\bWhole-word boundary built into the pattern
[unclosed...Inline alert — page never crashes
Regex OFF + Whole word ONLiteral text bounded by word edges

Privacy: your text never leaves your browser

Every Toolflect Text Tool is 100% client-side. The moment you type or paste text, it is analyzed by JavaScript running inside this browser tab. Your text is never sent to our servers, never stored in a database, and never shared with any third party or AI service.

  • No uploads, no accounts, no sign-up
  • No cookies or tracking of your text
  • Works offline once the page has loaded
  • Close the tab and your text is gone from memory

You can even verify it yourself: open your browser's developer tools, switch to the Network tab, and type into the tool — the only requests you will ever see are this page's own static files (HTML, CSS, JavaScript). Nothing you type is ever transmitted.

Frequently asked questions

Which regex flavor is used?
JavaScript (ECMAScript) regular expressions with the global flag — lookaheads, character classes, quantifiers and named groups all work.
What happens if my pattern is invalid?
Nothing dramatic by design: an inline alert explains the error, your text passes through unchanged, and you can keep editing the pattern.
Do capture groups work in the replacement?
Yes — standard JS tokens: $1…$9 for groups,
amp; for the whole match, $ for a literal dollar.
Does regex mode ignore the whole-word checkbox?
Yes — boundaries belong inside your pattern when regex is on (use \b). The checkbox applies to literal mode only.

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