Free Find Differences Tool

🟢 Runs Locally — verified: your files are processed in this browser. No uploads.

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. Visit counting (see the note at the foot of this page) is separate from your text and never receives it.

  • No uploads, no accounts, no sign-up
  • Your text is processed locally in your browser and never stored.
  • 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 — no request ever carries your text. You will also see the Google Analytics request that counts the visit; it carries a page view and never anything you typed, and no cookie or identifier is stored until you accept analytics.

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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Your text stays in your browser and is not uploaded. We use Google Analytics to count visits; until you choose it runs without cookies and stores nothing on your device. · Privacy Policy