Auto-Fill Client Security Questionnaires in Excel (.xlsx) in Under 60 Seconds
Upload incoming enterprise security spreadsheets (.xlsx / .csv). LeanSec parses columns locally and auto-matches answers using fuzzy NLP matching with 100% in-browser privacy.
Auto-fill 200+ question spreadsheets in seconds
Pre-loaded with auditor-verified security answers
100% Client-Side memory execution with SheetJS
Enterprise procurement departments send 150–300 question Excel questionnaires with tight deadlines, pulling senior engineers away from billable client work for days.
How It Works Locally in 4 Steps
Zero server dependencies. 100% in-browser speed and privacy.
Drag & Drop Client Excel File
Upload any .xlsx or .csv vendor assessment file. Parsing happens 100% in your browser memory.
Map Question & Answer Columns
Select the sheet, question column, and target answer column with live data previews.
Execute Local Fuzzy Matching
LeanSec scans all rows against our 211-item security QA knowledge base in under 3 seconds.
Review & Export Completed Excel
Inspect matched answers, edit confidence ratings, and export the finished Excel file back to your client.
Verified Compliance Controls & Standards
Frequently Asked Questions
Does LeanSec upload client spreadsheets to the cloud?
Never. LeanSec uses SheetJS and Fuse.js running directly inside your browser. No spreadsheets, questions, or answers are ever uploaded to any server or AI model API.
Can I customize the answers before exporting the Excel file?
Yes. LeanSec provides an interactive match grid where you can review, edit, or override any answer before clicking 'Export Completed Excel'.