Is my proprietary source code or confidential text uploaded to a server?

No. The entire comparison algorithm runs locally inside your browser's JavaScript engine using the Myers diff algorithm. No text, source code, or telemetry is ever transmitted across the internet.

Can I compare large files or ignore whitespace differences?

Yes. You can toggle 'Ignore Whitespace' and 'Ignore Case' options, and switch seamlessly between Side-by-Side (Split) and Unified diff views.

Code & Text Diff Checker — 100% Private Side-by-Side Comparison

Ignore Whitespace Ignore Case

+0 added · -0 removed · 0 unchanged

Original Text / Old File

Modified Text / New File

Difference Results

👉 Click "Compare Now" or "Load Sample Code" to view difference analysis.

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Enterprise IP Safe

Ideal for proprietary Silicon Valley codebases, defense contractors, customer PII, and NDA configs. 100% in-browser memory.

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Instant Myers Diff Engine

Calculates shortest edit scripts with word-level character resolution without network round trips.

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Unified & Patch Export

Export universal patch files compatible with Git, Mercurial, and command-line patch -p1 utilities.

Frequently Asked Questions

How is this diff checker safer than standard online diff websites?

Most public diff checkers send your confidential code to remote servers to process differences in a backend database. EcrioniX executes the entire diff computation locally using JavaScript in your browser sandbox. No text or telemetry ever leaves your computer.

What file formats are supported?

You can compare any text-based format including Verilog, SystemVerilog, VHDL, C/C++, Python, JSON, YAML, XML, SQL, Markdown, Bash scripts, and configuration files.

Can I download the diff as a patch file?

Yes! Click the Download .diff Patch button to export standard unified diff syntax that can be reviewed with git diff or applied directly with patch.