Online Document Comparison Tool
Use our free document comparison tool to find differences between two text files instantly. Compare revisions side by side directly in your browser.
About Document Comparison
The Doffl document comparison tool lets you quickly identify changes, additions, and deletions between two text files. Whether you are reviewing contract redlines, evaluating draft revisions, or verifying configuration updates, this utility highlights differences clearly across both versions.
Because the comparison logic executes entirely inside your browser, your sensitive data remains private and is never uploaded to a remote server. The tool is free to use, requires no software installation, and works without an account.
Key features
- Side-by-side and consolidated inline difference views
- Local browser processing ensures complete document privacy
- Precise character, word, and line change detection
- Color-coded highlights for inserted and deleted text
- Synchronized scrolling across both comparison panels
- No file size caps or account registration required
How to use Document Comparison
- Paste the original text into the left pane.
- Paste the updated or revised text into the right pane.
- Select your preferred display format, such as split or unified view.
- Click the compare button to calculate the differences.
- Review the highlighted additions, removals, and modifications.
Who is it for?
- Legal teams reviewing contract versions and agreement amendments.
- Writers and editors tracking changes across manuscript iterations.
- Developers comparing configuration files, raw logs, or scripts.
- Students checking revision history between assignment drafts.
- Operations teams auditing policy documents and procedure updates.
Frequently asked questions
Is my text private when using this document comparison tool?
Yes. The tool operates directly in your browser using client-side scripts. Your text is never uploaded to, processed on, or stored on external servers.
Is this document comparison tool free?
Yes, it is completely free to use with no usage restrictions or registration requirements.
What types of changes does the tool highlight?
The tool identifies inserted, deleted, and modified text at the character, word, and line levels, using distinct color coding for additions and removals.
Can I compare DOCX or PDF files directly?
This tool is built for plain text comparison. To compare Word or PDF documents, copy the text content from each file and paste it into the respective input fields.
Does the tool support side-by-side comparison?
Yes. You can switch between a side-by-side split view with synchronized scrolling and a unified inline view depending on your review preference.