Free Find Differences Tool

Word-level difference analysis: added and removed words, similarity and changed regions between two texts.

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 both versions

    Text A and Text B — any length, any language.

  2. 2

    Review the summary

    Added words, removed words and similarity are computed live.

  3. 3

    Inspect the lists

    The result panel lists every added and removed word for a quick scan.

Key features

ChangeDetected
One-word editWord-level add/remove, not a whole line
Spelling tweakOld word removed + new word added
Emoji / ArabicTokenized safely via Intl.Segmenter
SimilarityLexical overlap percentage

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

How is this different from text-diff?
Text Diff compares whole lines; Find Differences breaks text into words so a single-word edit is reported precisely instead of as a whole-line change.
What does similarity mean?
The Dice coefficient over word tokens — 2 × common tokens ÷ total tokens. It measures lexical overlap, not semantic meaning.
Does it find character changes?
It works at word granularity. A typo inside a word appears as that word being removed and re-added.
Private?
Fully — both texts are analyzed locally in your tab.

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