How do you run a secure contract comparison without a document cloud?
Secure contract comparison in AlineaDoc means both versions stay in the browser: Files are not uploaded to a third-party server, no account required to start.
Ready to try it? Open the in-browser document comparator (/app). You can start without an account. Files are not uploaded to a third-party server.
A one-minute habit before you sign
Keep the last version you approved. When the “final” PDF arrives, open the comparator and drop both files.
- Check modified numbers first (price, caps, deposits).
- Read deletions — vanished protections are easy to miss by eye.
- Inspect moved paragraphs so a relocated clause is not treated as new law.
Related tools
Legal teams: document comparison for legal teams. Mixed formats: compare PDF vs DOCX.
Demo transcript
The demo shows two lease versions side by side. Monthly rent changes from 950 to 1,050 and the deposit from one month to two. AlineaDoc marks those as modified, not as a full paragraph rewrite. Unchanged clauses stay collapsed. The files are labeled as PDFs processed in the browser, not on a server.
Frequently asked questions
What makes a contract comparison “secure” here?
Files are not uploaded to a third-party server for the comparison. AlineaDoc processes them in your tab. You can verify that in DevTools. Analytics scripts are not loaded on the /app sandbox during the diff.
Can I mix a Word draft with a PDF signature copy?
Yes. That is the usual path: negotiate in Word, sign in PDF. AlineaDoc compares DOCX and PDF together as a free in-browser utility. No credit card is required to see classified changes before you sign.
Is there a hard paywall on the local diff?
No. You can compare without signing up. Optional accounts expand quotas. Premium adds export and summaries. The local comparison itself is not locked behind a credit card or a blocking paywall.