Text & JSON Diff Viewer
Compare two blocks of text or code to instantly see the differences. Additions and deletions are clearly highlighted.
No differences found, or inputs are empty.
The Diff Viewer is an essential tool for developers, writers, and editors who need to track changes between two versions of text or code. It provides a quick and clear visualization of what has been added, removed, or modified, making it easy to review edits, merge changes, or debug code. All comparisons are performed instantly and securely in your browser, so your data is never sent to a server.
- Paste your original text into the 'Original Text (A)' box.
- Paste the modified version into the 'Changed Text (B)' box.
- The tool will automatically display the differences in the 'Differences' section below.
- Use the options to switch between comparing by lines, words, or characters, and to toggle case-sensitivity for the comparison.
What do the colors mean?
Green highlighted text indicates content that was added in the second version. Red highlighted text indicates content that was removed. Un-highlighted text is content that remained unchanged between both versions.
When should I use line, word, or character diffs?
Line diffs are best for code, where changes are often made on a line-by-line basis. Word diffs are ideal for prose, as they clearly show changes to sentences and paragraphs. Character diffs are useful for finding very small, subtle changes within a single word or data string.
Is my data secure?
Yes. All text comparison is performed on your device in your browser. Your text is never sent to our servers, ensuring complete confidentiality.
Tool guide
How to Use the Diff Viewer
This guide explains what the tool does, where it fits into a real workflow, and how to use it confidently. It gives first-time visitors a clear written explanation of the page before they start working with their own text, files, or data.
What does this tool do?
The Diff Viewer helps you compare two blocks of text or json to see the differences. It is designed for quick, focused work: paste or choose your input, adjust the available options, and copy or download the result when you are done. The page is useful for writers, developers, students, analysts, marketers, and anyone who needs a small conversion job finished without installing another app.
Most tools on Text-Converters.com run directly in your browser, which keeps the experience fast and private. When a tool requires special processing, the page is built to keep the workflow clear so you know what is happening before you use it.
How to use this tool
- Open the Diff Viewer page and read the options available near the input area.
- Paste text, upload a file, or enter the values that match the task you want to complete.
- Choose any formatting, conversion, privacy, or output options shown by the tool.
- Run the conversion and review the result before copying, downloading, or sharing it.
- Clear the input when you are finished, especially if you worked with private content.
When would you use this?
- A developer debugging a payload, token, checksum, color value, regular expression, or code snippet.
- A technical writer preparing examples that need consistent, readable formatting.
- A student or researcher who needs a quick diff viewer without installing desktop software.
- A remote worker who wants to clean up copied content before pasting it into a document, spreadsheet, CMS, or chat message.
Frequently asked questions
Is the Diff Viewer free?
Yes. The tool is free to use, with no account, subscription, or payment required.
Do I need to install anything?
No. It works in your browser, so you can use it from a laptop, tablet, or phone.
Is my data stored?
The site is designed around privacy-first browser processing wherever possible. We do not ask you to create an account to use the tool.
Can I use the result commercially?
Yes, but always review the output before relying on it for important, legal, financial, medical, or production work.