The rust_xlsxwriter library is a Rust library for writing Excel files in the xlsx format.

The rust_xlsxwriter library can be used to write text, numbers, dates and formulas to multiple worksheets in a new Excel 2007+ xlsx file. It has a focus on performance and on fidelity with the file format created by Excel. It cannot be used to modify an existing file.

Sample code to generate the Excel file shown above.

use rust_xlsxwriter::*;

fn main() -> Result<(), XlsxError> {
    // Create a new Excel file object.
    let mut workbook = Workbook::new();

    // Create some formats to use in the worksheet.
    let bold_format = Format::new().set_bold();
    let decimal_format = Format::new().set_num_format("0.000");
    let date_format = Format::new().set_num_format("yyyy-mm-dd");
    let merge_format = Format::new()
        .set_border(FormatBorder::Thin)
        .set_align(FormatAlign::Center);

    // Add a worksheet to the workbook.
    let worksheet = workbook.add_worksheet();

    // Set the column width for clarity.
    worksheet.set_column_width(0, 22)?;

    // Write a string without formatting.
    worksheet.write(0, 0, "Hello")?;

    // Write a string with the bold format defined above.
    worksheet.write_with_format(1, 0, "World", &bold_format)?;

    // Write some numbers.
    worksheet.write(2, 0, 1)?;
    worksheet.write(3, 0, 2.34)?;

    // Write a number with formatting.
    worksheet.write_with_format(4, 0, 3.00, &decimal_format)?;

    // Write a formula.
    worksheet.write(5, 0, Formula::new("=SIN(PI()/4)"))?;

    // Write a date.
    let date = ExcelDateTime::from_ymd(2023, 1, 25)?;
    worksheet.write_with_format(6, 0, &date, &date_format)?;

    // Write some links.
    worksheet.write(7, 0, Url::new("https://www.rust-lang.org"))?;
    worksheet.write(8, 0, Url::new("https://www.rust-lang.org").set_text("Rust"))?;

    // Write some merged cells.
    worksheet.merge_range(9, 0, 9, 1, "Merged cells", &merge_format)?;

    // Insert an image.
    let image = Image::new("examples/rust_logo.png")?;
    worksheet.insert_image(1, 2, &image)?;

    // Save the file to disk.
    workbook.save("demo.xlsx")?;

    Ok(())
}

rust_xlsxwriter is a rewrite of the Python XlsxWriter library in Rust by the same author and with some additional Rust-like features and APIs. The currently supported features are:

• Support for writing all basic Excel data types.
• Full cell formatting support.
• Formula support, including new Excel 365 dynamic functions.
• Charts.
• Hyperlink support.
• Page/Printing Setup support.
• Merged ranges.
• Conditional formatting.
• Data validation.
• Cell Notes.
• Textboxes.
• Sparklines.
• Worksheet PNG/JPEG/GIF/BMP images.
• Rich multi-format strings.
• Defined names.
• Autofilters.
• Worksheet Tables.
• Serde serialization support.
• Support for macros.
• Memory optimization mode for writing large files.

rust_xlsxwriter is under active development and new features will be added frequently.

• default: Includes all the standard functionality. This has a dependency on the zip crate only.

• constant_memory: This keeps memory usage to a minimum when writing writing large files.

• serde: Adds supports for Serde serialization. This is off by default.

• chrono: Adds supports for Chrono date/time types to the API. This is off by default.

• zlib: Adds a dependency on zlib and a C compiler. This includes the same features as default but is 1.5x faster for large files.

• polars: Add support for mapping between PolarsError and rust_xlsxwriter::XlsxError to make code that handles both types of error easier to write.

• wasm: Adds a dependency on js-sys and wasm-bindgen to allow compilation for wasm/JavaScript targets.

• ryu: Adds a dependency on ryu. This speeds up writing numeric worksheet cells for large data files. It gives a performance boost above 300,000 numeric cells and can be up to 30% faster than the default number formatting for 5,000,000 numeric cells.

Recent changes:

• Added constant_memory mode.
• Removed requirement on regex crate.

See the full Release Notes and Changelog.

• User Guide: Working with the rust_xlsxwriter library.
  • Getting started: A simple getting started guide on how to use rust_xlsxwriter in a project and write a Hello World example.
  • Tutorial: A larger example of using rust_xlsxwriter to write some expense data to a spreadsheet.
  • Cookbook.
• The rust_xlsxwriter crate.
• The rust_xlsxwriter API docs at docs.rs.
• The rust_xlsxwriter repository.
• Roadmap of planned features.