Text & Code Diff Comparison Checker

Compare two text documents or code snippets side-by-side or inline with added, removed, and modified line highlighting.

Client-Side Memory Sandbox • Ready

Ignore Whitespace

● Original Text9 lines

● Modified Text11 lines

Comparison Result (Side-by-Side Split View)

+7 Added-5 Removed

Original (Left)Modified (Right)
1-function calculateDiscount(price, userRole) {
1+function calculateDiscount(price, userRole, couponCode) {
2-  if (userRole === "admin") {
2+  // VIP discount applies first
3-    return price * 0.20;
3+  if (userRole === "admin" || userRole === "vip") {
4+    return price * 0.25;
4  }
5  }
5  if (userRole === "member") {
6  if (userRole === "member") {
6-    return price * 0.10;
7+    const bonus = couponCode ? 0.05 : 0;
8+    return price * (0.10 + bonus);
7  }
9  }
8-  return 0;
10+  return price > 100 ? 5 : 0;
9}
11}

⚡Next in your workflow:

How to Use Text & Code Diff Comparison Checker

1. Paste Original & Modified Text

Paste your baseline draft on the left and updated document on the right.

2. Compare Side-by-Side or Unified

The diff engine compares line-by-line and character-by-character differences in real time.

3. Inspect Color-Coded Changes

Additions appear in green and deletions in red, highlighting changed words and exact line numbers.

How This Utility Works

A visual text and code diff comparison utility powered by the Myers diff algorithm. Compare two documents side-by-side (split view) or inline (unified view) with line-by-line, word-by-word, or character-by-character granularity. Features whitespace-ignoring toggles, line addition/removal metrics, and instant clipboard sharing.

Confidential Client-Side Text Processing:

Drafts, sensitive memos, and text diffs remain confidential on your device. All regex filtering and line sorting occurs in local memory.

Frequently Asked Questions

Is my text private when checking differences?

Yes, 100%. The diff algorithm executes entirely inside your browser memory. No code or text snippets ever touch any remote server.

What is the difference between Split and Unified view?

Split view places the original and modified documents side-by-side with synchronized lines. Unified view displays all changes in a single linear stream with + and - indicators, similar to GitHub and Git diffs.

Can it ignore formatting and whitespace changes?

Yes! Toggle the "Ignore Whitespace" option to ignore differences in spaces, tabs, and indentation.

Compare & Diff Two Text Files in Terminal

Run directly in your terminal without installing external heavy dependencies

CLI Quick Recipe

Bash / Zsh

$ diff -u file_a.txt file_b.txt

Produces a unified diff format showing added (+) and deleted (-) lines between two files.

Git Diff

$ git diff --no-index file_a.txt file_b.txt

Generates syntax-highlighted, word-level terminal diffs even outside of a git repository.

Text & Code Diff Comparison Checker

How to Use Text & Code Diff Comparison Checker

1. Paste Original & Modified Text

2. Compare Side-by-Side or Unified

3. Inspect Color-Coded Changes

How This Utility Works

Frequently Asked Questions

Compare & Diff Two Text Files in Terminal

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