Benchmarking C versus Rust for SQLite number parsing extensions
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Developer tools
Excel Import Mapper
Turn messy spreadsheets into clean, validated data.
Self-hosted XLSX and CSV importer with visual column mapping, row-level validation and clean CSV export.
Highlights
What Excel Import Mapper does
XLSX and CSV
Upload spreadsheets and pick the sheet to import.
Visual mapping
Map spreadsheet columns to your fields without editing the file.
Row-level validation
Required fields are checked, and every rejected row explains what is wrong.
Clean export
Download normalized CSV. Temporary files are stored encrypted.
Every product that accepts spreadsheets ends up writing the same importer: upload, pick a sheet, match columns, validate rows and report errors. Excel Import Mapper is that importer, ready to run and easy to adapt.
From upload to clean data
- Upload an XLSX or CSV file and choose the sheet.
- Map spreadsheet columns to your fields.
- Review accepted and rejected rows, each with a clear error message.
- Export normalized CSV.
What you receive
The complete TypeScript source (Express, EJS views, SQLite), Docker Compose files, environment examples and setup documentation.
Screenshots
See it in action
Try before you buy
Open the Excel Import Mapper demo
Sample data only. Nothing you do there affects anyone else.
FAQ
Questions about Excel Import Mapper
Anything else? Email [email protected].
Can it handle workbooks with several sheets?
Yes. Choose the sheet to import after upload.
What happens to rows that fail validation?
They are listed separately with row-level error messages, so users can fix the source file and try again.
What do I need to run it?
Docker Compose, or Node.js 20+ directly.
News
All news
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