libreoffice-rs

Pure-Rust, std-only library and CLI for reading, writing, converting, and rendering office documents — DOCX, XLSX, PPTX, ODT, ODS, ODP, ODG, ODF, ODB, PDF, HTML, SVG, Markdown, CSV, and plain text — with no C/C++ shims, no FFI, no LibreOffice install, and zero non-std dependencies.

Quick start

cargo install libreoffice-pure

# Convert DOCX to PDF — no soffice, no Java, no system deps
libreoffice-pure --headless --convert-to pdf report.docx

# Spreadsheet to CSV
libreoffice-pure --headless --convert-to csv spreadsheet.xlsx

# Markdown to DOCX
libreoffice-pure convert --to docx notes.md notes.docx

# Extract text as Markdown
libreoffice-pure docx-to-md report.docx report.md

# Render pages as images
libreoffice-pure docx-to-pngs report.docx pages/ --dpi 144

The --headless --convert-to interface mirrors soffice — drop it into existing scripts as a faster, dependency-free replacement.

Library API

use libreoffice_pure::{convert_bytes, sniff_format_from_bytes};

let docx = std::fs::read("report.docx").unwrap();
let pdf = convert_bytes(&docx, "docx", "pdf").unwrap();
std::fs::write("report.pdf", pdf).unwrap();

Per-domain crates (lo_writer, lo_calc, lo_impress, lo_draw, lo_math, lo_base) give fine-grained control over document creation and export.

Performance

10–187× faster than real LibreOffice across the full N×M conversion matrix (mean ~116× across 63 head-to-head format pairs). See the full README for benchmark details.

Status

This is not feature-parity with LibreOffice. It provides a coherent Rust architecture and meaningful real functionality, but does not fully replace LibreOffice. See STATUS.md for the candid feature matrix.

License