A tiny in-browser text and code viewer/editor that keeps everything in the URL.

Live: https://txt.73.nu

• Edit text directly in the browser
• Syntax highlight the content (auto-detect or choose a language)
• Toggle line wrapping
• Share the content by sharing the URL
• Download the current text using the detected or selected file type

• The editor state is stored in the URL hash (#...), not on a server.
• When you type, the text is encoded and written to location.hash using history.replaceState, so the page does not reload.
• On load (or when the hash changes), the page decodes the hash back into text and restores:
  • wrapping on/off
  • language selection (Auto or locked)
  • the text itself
• To keep URLs shorter, it picks the smallest encoding among a few options (for example URL-encoding, LZ-based compression, and optionally browser compression streams when available).
• Highlighting is done client-side (Highlight.js). In Auto mode it tries to detect a language; in locked mode it uses the selected language.
• The download button exports the current text as a file with an extension and MIME type that match:
  • the detected language (Auto mode), or
  • the selected language (locked mode)

• Because everything is in the URL hash, very large content can hit browser and platform URL limits.
• Auto language detection can be imperfect for short snippets.