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README.md

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+# csv2excel
+
+A command-line tool that converts one or more CSV files into a single Excel (`.xlsx`) file. Each CSV file becomes a separate worksheet, named after the source file.
+
+## Features
+
+- Merges multiple CSV files into one Excel workbook
+- Auto-detects the delimiter (`,`, `;`, `\t`)
+- Supports UTF-8 and Windows-1252 encoding
+- Tolerant with malformed CSV files (`LazyQuotes`)
+- Version info injected at build time via git tags
+
+## Installation
+
+### From source
+
+Requires [Go](https://golang.org/) 1.21+.
+
+```bash
+git clone https://code.beautifulmachines.dev/jakoubek/csv2excel
+cd csv2excel
+go install .
+```
+
+### Build with Mage
+
+Requires [Mage](https://magefile.org/).
+
+```bash
+mage Build          # current platform (auto)
+mage BuildWindows   # dist/csv2excel.exe
+mage BuildLinux     # dist/csv2excel
+mage Install        # install to $GOBIN
+mage Clean          # remove dist/
+```
+
+## Usage
+
+```
+csv2excel [flags] file1.csv file2.csv ...
+```
+
+### Flags
+
+| Flag | Default | Description |
+|------|---------|-------------|
+| `-o` | `output.xlsx` | Output file path |
+| `-sep` | `auto` | Delimiter: `auto`, `,`, `;`, `\t` |
+| `-enc` | `utf8` | Encoding: `utf8`, `windows1252` |
+
+### Examples
+
+```bash
+# Convert a single file
+csv2excel data.csv
+
+# Merge multiple files into one workbook
+csv2excel -o report.xlsx sales.csv inventory.csv customers.csv
+
+# Force semicolon delimiter, Windows-1252 encoding
+csv2excel -sep ";" -enc windows1252 -o result.xlsx export.csv
+```
+
+Each CSV file becomes a worksheet named after the filename (without extension). Sheet names are truncated to 31 characters to comply with Excel's limit.
+
+## Dependencies
+
+- [excelize](https://github.com/xuri/excelize) — Excel file creation and manipulation
+- [golang.org/x/text](https://pkg.go.dev/golang.org/x/text) — Character encoding support
+
+## License
+
+MIT