About Slip Compare

Slip Compare is a free, privacy-focused text comparison tool that helps you find differences between documents instantly. No sign-ups, no uploads to servers, no compromises.

Why we built this

Comparing documents shouldn't require uploading sensitive files to unknown servers or paying for expensive software. Slip Compare was created to provide a simple, powerful comparison tool that respects your privacy.

Whether you're reviewing contract changes, comparing code, or checking document revisions, Slip Compare gives you instant, accurate results without any privacy concerns.

How it works

Slip Compare uses advanced diffing algorithms to compare your texts at the word level. When you upload a file or paste text, everything is processed entirely in your browser using JavaScript. Your documents never leave your device.

The comparison uses a Longest Common Subsequence (LCS) algorithm to identify the exact changes between two texts, highlighting additions and deletions with precision.

Technology

Slip Compare is built with modern web technologies that enable powerful client-side processing:

Mammoth.js

Extracts text content from Word documents (.docx)

PDF.js

Mozilla's library for parsing and extracting text from PDFs

LCS Algorithm

Efficient diff algorithm for accurate comparison

Web APIs

File API and drag-and-drop for seamless file handling

Perfect for

📜

Legal Documents

Compare contract versions to spot changes in terms, conditions, and clauses.

💻

Code Review

Quick comparison of code snippets or configuration files.

✍️

Writing & Editing

Track changes between drafts of articles, essays, or reports.

📚

Academic Work

Compare paper revisions or check for consistency across documents.

🏢

Business Documents

Review changes in proposals, policies, or internal communications.

🌐

Translations

Compare translated versions to ensure consistency and accuracy.

Frequently Asked Questions

Is Slip Compare really free?
Yes, Slip Compare is completely free to use. There are no hidden fees, no premium tiers, and no limits on how many comparisons you can make.
Are my files uploaded to a server?
No. All file processing happens entirely in your browser. Your documents never leave your device, ensuring complete privacy and security.
What file types are supported?
Slip Compare currently supports Microsoft Word documents (.docx), PDF files, and plain text files (.txt). You can also paste text directly into the comparison tool.
Can I compare files of different types?
Yes! You can compare any combination of supported file types. For example, you can compare a Word document with a PDF or text file.
Does it work offline?
After the initial page load, Slip Compare can work offline since all processing is done in your browser. The comparison engine doesn't require an internet connection.
Is there a file size limit?
There's no hard limit, but very large files may take longer to process depending on your device's capabilities. For best performance, we recommend files under 10MB.

Ready to compare?

Try Slip Compare now and see how easy document comparison can be.

Open Slip Compare