FILE TOOL // 024

Binary File Compare

Compare two files byte for byte and see exactly where they diverge. The downloadable report records the first differences, shared length, and SHA-256 fingerprints.

Processed locally in your browser

Choose two files

Exactly two files

Drop files here Drop the original and comparison file together.

FileSizeType

No files selected.

Choose files to begin.0 files

How to use Binary File Compare

Select Exactly two files using the file area.
Review the selected filenames and sizes.
Choose any available options and click Compare Bytes.
Read the findings, then download the JSON comparison report.

What this file tool does

Reads two actual files and compares their bytes at matching offsets. It also hashes both files so identical results can be documented.

The comparison walks every shared byte, counts differences, records the first 100 mismatch offsets, and checks any length difference.

Your selected files stay in this browser session. Both files are loaded into browser memory. For very large files, use a desktop binary comparison tool.

Supported inputs and limits

Both files are loaded into browser memory. For very large files, use a desktop binary comparison tool.

Item	Support
Input	Exactly two files
Output	JSON comparison report
Processing	Local browser session

Example and practical tips

Practical example

Compare two exports with similar names to confirm whether their content is genuinely identical, not just the file size.

Tips

Keep an untouched copy of important source files.
Check filenames and sizes before downloading the result.
Use a current desktop browser for the broadest file API support.

Frequently asked questions

How can I use binary file compare without uploading files?

Choose the requested files in this page and run the tool. Processing happens in your browser, and only the result you download leaves the page.

What does the downloadable json comparison report contain?

It contains the actual result or evidence produced from the selected file bytes and metadata, with the important findings shown on screen as well.

Can I use binary file compare on a large file?

Browser memory and device speed set the practical limit. Start with a smaller sample if the file is several gigabytes or the device has limited memory.

Does this tool change my original files?

No. Browser file access is read-only here. The tool creates a separate result for download and does not overwrite the selected originals.

Is a clean result a complete security guarantee?

No. The result covers the checks described on this page. Use specialized desktop or forensic software when you need deeper validation.

Related file tools

GZIP File Decompressor File Hex Viewer GZIP File Compressor MIME Type Detector

Result details

Field	Meaning
Primary result	Main finding from the selected files
Download	JSON comparison report
Status	Complete only after a real result Blob is created

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