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How to open .RST files on iOS

To open .RST files on iOS, in the Files app, open the .rst file in a text editor app that supports plain text; if you need formatted output, transfer it to a desktop and render it with Docutils/Sphinx.

Step-by-step instructions

  1. In the Files app, open the .rst file in a text editor app that supports plain text; if you need formatted output, transfer it to a desktop and render it with Docutils/Sphinx.

Common issues

The file opens as plain text and looks “unformatted”

reStructuredText is a markup language stored as plain text, so a normal editor will show the raw markup rather than a styled document.

  1. Open it in a text editor for reading/editing the source.
  2. If you want a styled view, render/convert it using Docutils or build it using Sphinx to produce HTML (or another output format).

Double-clicking does not open the file or opens in the wrong app

Your system may not have a file association for .rst (or it is associated with an app you do not want).

  1. Use “Open with” and choose a text editor to view it.
  2. Optionally change the default app association for .rst to your preferred editor.

Rendering/build fails due to syntax or directive errors

Docutils/Sphinx can reject or warn about invalid reStructuredText syntax, indentation problems, or unsupported directives/roles.

  1. Validate the document against the reStructuredText specification and fix indentation/structure issues.
  2. If building with Sphinx, confirm the directives/roles used are supported by your Sphinx configuration and extensions.

Text displays with strange characters or wrong line breaks

The file may use an unexpected encoding or line-ending style.

  1. Reopen the file and try a different text encoding (commonly UTF-8) in your editor.
  2. If needed, convert line endings (CRLF/LF) using your editor settings or a text conversion tool.

Security note

.rst is plain text, but be cautious when rendering: reStructuredText supports directives, and building with documentation tools can process external references or include content depending on tool configuration.

Back to .RST extension page