XLSX Validator
Start a New Validation
1. Upload Data File
Select the Excel or CSV file to validate. It will be processed locally in your browser.
2. Select Duplicate Detection Method
Choose how to check for duplicate rows. "Thorough" is more powerful but slower on very large files.
Manage Dictionary
Edit Stored Dictionary
Modify the rules for individual columns.
Manage Rule Categories
Create and edit reusable rule templates.
Download Full Dictionary PDF
Save a structured PDF of the entire dictionary.
Download Backup (JSON)
Save the dictionary and rule categories to a `.json` file.
Restore from Backup
Upload a `.json` backup file. This will **overwrite** all stored data.
Clear Stored Dictionary
Permanently delete all data from your browser.