Compare two text files or code snippets instantly with our Online File Difference Checker. Detect changes, additions, and deletions between versions — visually, line by line.
This text comparison tool is ideal for developers, content editors, technical writers, and QA teams. View clean, highlighted differences between source code, configuration files, markdowns, and plain text — directly in your browser.
Easily identify added, removed, and modified lines with color-coded side-by-side or unified view options. No installation, no signups — just fast, accurate file diff visualization powered by client-side JavaScript.
Upload or paste two text files to instantly compare their differences side-by-side. Highlight changes, detect edits, and review additions or deletions — all securely within your browser.
Use this free online file difference tool to compare text, code, or documents side by side. The FileDiff tool highlights added, deleted, and modified lines — ideal for developers, writers, and editors who need a clear view of file changes.
Upload or paste your text, and get instant side-by-side differences without waiting or server uploads — 100% client-side.
Additions appear green, deletions appear red, and unchanged lines remain neutral — just like GitHub’s diff view.
Your data never leaves your browser — comparisons are processed locally, ensuring total privacy and no server-side storage.
Works for code, text, or markdown files. Ideal for developers, editors, and QA testers who need accurate visual diffs every time.
Comparing files or text online has never been easier. Follow these three simple steps to visualize changes instantly — just like GitHub’s side-by-side diffs.
Select or drag-and-drop your old and new files, or paste the content directly into the editor fields for quick comparison.
Click the “Compare” button to analyze differences line by line. The tool highlights additions, deletions, and modifications automatically.
Review both versions side by side with color-coded highlights for quick identification of changes, gaps, and modified words — just like in GitHub or VS Code.
PlayboxJS’s File Difference Tool is designed for speed, accuracy, and complete data privacy. Whether you’re a developer, writer, or analyst — it helps you spot every change instantly, just like GitHub or VS Code.
Our client-side diff engine processes even large text files in seconds — no waiting, no lag, no external requests.
Everything happens in your browser. No uploads, no storage, and no tracking — your files never leave your device.
Color-coded lines and bold word-level highlights help you understand exactly what changed, even in long documents.
No subscriptions, no limits — compare as many files as you need, anytime, completely free.
Ideal for code reviews, document revisions, or detecting unwanted changes before deploying or publishing updates.
Fully responsive design works seamlessly on desktops, tablets, and mobile — no installation required.
The PlayboxJS File Difference Tool is a free online utility that lets you compare two text or code files side by side. It highlights added, removed, and modified lines — similar to how GitHub or VS Code display file changes.
Yes. Your files and content never leave your browser. All comparisons are processed locally on your device using JavaScript, ensuring complete privacy and data security.
The tool uses a lightweight diff algorithm to detect changes between two text blocks or files. It then visualizes differences using color-coded highlights: green for additions, red for deletions, and neutral colors for unchanged lines.
Absolutely. The tool works for all text-based formats including
JavaScript, HTML, CSS,
Markdown, and configuration files such as .json or
.yaml.
No installation or signup is required. PlayboxJS File Difference Tool runs entirely in your browser — it’s fast, lightweight, and accessible from any device.
Yes, you can compare relatively large files efficiently. However, since processing is client-side, extremely large files may take slightly longer depending on your device and browser performance.
Stop guessing where changes were made. Upload or paste two files and see the exact differences — highlighted, structured, and ready for review.
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