RST vs TOML
A detailed comparison of reStructuredText and TOML Config — file size, quality, compatibility, and which format to choose for your workflow.
reStructuredText
Documents & TextRST (reStructuredText) is a lightweight markup language used in Python documentation.
About RST filesTOML Config
Documents & TextTOML (Tom's Obvious Minimal Language) is a configuration file format designed to be easy to read due to its clear semantics. It is the default configuration format for Rust (Cargo.toml), Python packaging (pyproject.toml), and many modern CLI tools.
About TOML filesStrengths Comparison
RST Strengths
- Rich directives for admonitions, code, math, and custom elements.
- Cross-references work within and across documents.
- Sphinx ecosystem offers best-in-class Python docs output.
- Standardized as part of Python PEP infrastructure.
- Plain text, version-controllable.
TOML Strengths
- Unambiguous parsing — every TOML 1.0 parser produces the same output.
- Native date/time types (unlike JSON).
- Comments, multi-line strings, nested tables.
- Explicit types with no coercion gotchas.
- Chosen by Rust (Cargo), Python (pyproject), Hugo, Zola.
Limitations
RST Limitations
- Syntax denser than Markdown — higher learning curve.
- Less widely adopted than Markdown outside Python world.
- Multiple directive dialects (Sphinx, Docutils, custom) create fragmentation.
- MyST (Markdown + Sphinx) has pulled many Python projects toward Markdown.
TOML Limitations
- Less flexible than YAML for deeply nested config.
- Table arrays with many rows become visually busy.
- Smaller ecosystem than YAML or JSON.
- Not ubiquitous in DevOps — tooling leans YAML.
Technical Specifications
| Specification | RST | TOML |
|---|---|---|
| MIME type | text/x-rst | application/toml |
| Extension | .rst | .toml |
| Toolchain | Docutils, Sphinx, Read the Docs | — |
| Encoding | UTF-8 | UTF-8 (required) |
| Related formats | MyST (Markdown + RST directives) | — |
| Standard | — | TOML 1.0.0 (2021) |
| Types | — | string, integer, float, boolean, datetime, array, table |
Typical File Sizes
RST
- API reference page 5-50 KB
- Sphinx project chapter 20-100 KB
- Full library documentation 500 KB - 10 MB
TOML
- Rust Cargo.toml 500 B - 5 KB
- Python pyproject.toml 1-10 KB
- Hugo site config 2-20 KB
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Frequently Asked Questions
RST (reStructuredText) is a document format used to store paginated text, with optional formatting, tables, images, hyperlinks, headers and footers. It sits in the documents & text family and is typically associated with a specific office suite or publishing pipeline that defined the format and ships the canonical reader.
RST (reStructuredText) is a document formato used to store paginated text, com optional formatoting, tables, images, hyperlinks, headers e footers. It sits no documents & text family e is tipicamente associated com a specific office suite ou publishing pipeline that defined the formato e ships the canonical reader.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — open most RST files with reasonable fidelity. If your installed software does not support RST, convert to DOCX or PDF first using KaijuConverter; both open in virtually every reader, including free online viewers.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — abrir most RST arquivos com reasonable fidelity. If your installed software does not support RST, converter to DOCX ou PDF first usando KaijuConverter; both abrir in virtually every reader, including grátis online viewers.
Upload the RST to KaijuConverter and pick DOCX, PDF, ODT, RTF, HTML, Markdown, or plain text. Our pipeline runs LibreOffice headlessly plus pandoc for text formats — the same engines behind professional document pipelines. Styles, tables, images, and hyperlinks survive the conversion intact.
Yes, to a high degree. Standard fonts, headings, lists, tables, images, hyperlinks and page structure transfer cleanly. Custom fonts substitute to the closest match if not embedded; obscure layout features unique to RST (frames, legacy macros) may flatten to static content in the target format.