Text & Code Diff Checker

Diff

Compare text and code line-by-line or character-by-character with visual side-by-side diffing.

+11 lines-7 lines
Original Document (Before)
Original
UTF-8•100% Local Sandbox
8 lines • 221 Bytes
Modified Document (After)
Modified
UTF-8•100% Local Sandbox
12 lines • 372 Bytes
Diff Inspector (Side-by-side view)Line-by-line comparison
- function calculateTotal(items, taxRate) {
- let subtotal = 0;
- for (let i = 0; i < items.length; i++) {
- subtotal += items[i].price * items[i].quantity;
- }
- const tax = subtotal * taxRate;
- return subtotal + tax;
+ function calculateTotal(items, taxRate = 0.08) {
+ const subtotal = items.reduce((acc, item) => {
+ return acc + (item.price * item.quantity);
+ }, 0);
+
+ // Calculate discount if applicable
+ const discount = subtotal > 100 ? subtotal * 0.1 : 0;
+ const taxable = subtotal - discount;
+ const tax = taxable * taxRate;
+
+ return Number((taxable + tax).toFixed(2));
}

About Text & Code Diff Checker

A text diff checker calculates the differences between two blocks of text or source code files. It uses difference algorithms (like Myers diff) to identify insertions, deletions, and inline modifications, helping developers review code changes, merge conflicts, or document revisions.

Zero-Upload Privacy Guarantee

Source code snippets, proprietary algorithms, and internal configuration changes should not be posted to public diff websites. Running locally ensures your code never leaves your workstation.

Client-Side Sandbox● 100% Air-Gapped

Key Capabilities & Features

Side-by-side split view and unified inline view
Line numbers and word-level diff highlights
Summary statistics: lines added, lines deleted, lines unchanged
Ignore whitespace and case sensitivity toggles
Swap inputs button and quick clear controls

How to use this compare text online

1

Paste Original Text

Place the reference or original text into the left pane.

2

Paste New Text

Place the updated text into the right pane.

3

Choose View Mode

Toggle between 'Side-by-Side (Split)' and 'Unified (Inline)' views.

4

Configure Diff Options

Toggle 'Ignore Whitespace' or 'Word-level highlights' as needed.

Frequently Asked Questions

Yes! The diff algorithm works across all plain text, JSON, HTML, Python, JavaScript, CSS, and Markdown.