About TextLens
See exactly what changed,
and why it matters.
TextLens is a free web tool built for anyone who works with documents, data, or code and needs to understand the difference between two versions quickly, clearly, and without friction.
Our mission
Comparing two pieces of text or two tables shouldn't require expensive software, a learning curve, or a subscription. We built TextLens because we kept reaching for tools that were either too complex for a quick comparison or too limited to handle real-world data.
TextLens combines the precision of a traditional diff tool with the context of AI-powered analysis so you don't just see what changed, you understand why it might matter. Whether you're reviewing a contract revision, checking a spreadsheet update, or comparing two versions of a report, TextLens gives you a clear picture in seconds.
We believe great tools should be fast, private, and accessible to everyone no account required, no data stored, no paywall.
What TextLens can do
Text Comparison
Paste any two blocks of text and see additions, deletions, and modifications highlighted line by line in real time.
Table Comparison
Compare spreadsheets and tabular data side by side. Select and copy ranges just like a real spreadsheet.
AI Insights
Go beyond the diff. Our AI summarises the semantic meaning of changes not just what moved, but what shifted in intent.
Import Spreadsheets
Upload CSV or Excel files directly into the table editor. No conversion needed paste, upload, and compare.
Privacy First
Your content is never stored on our servers. Everything you paste or upload stays in your browser session.
Works Everywhere
No install, no account, no subscription. TextLens runs entirely in your browser.
How it works
Paste or upload your content
Drop text into the two panels or upload a CSV / Excel file. TextLens accepts raw text, structured data, or anything in between.
See differences instantly
Deletions, additions, and modifications are highlighted in real time no button to press, no waiting.
Dig deeper with AI Insights
Hit "AI Insights" to get a plain-language summary of what changed, what was added, and what the differences mean in context.
Copy, export, or share
Select ranges in the diff view and copy as TSV, ready to paste into any spreadsheet or document.
Ready to compare?
It's free, instant, and requires no sign-up. Just paste your text or upload a file and go.
Open TextLens →