Native ODT support for Standard Notes

[GitHubNewbie0]

For users considering migration to Standard Notes from any environment where ODT is the working format — including European public sector users where ODT is the procurement standard — the absence of native .odt support in Standard Notes is a deterrent. ODT is the only ISO-standardized document format (ISO/IEC 26300). A privacy-first suite that can't open the open standard creates an awkward gap exactly where SN's values otherwise resonate strongest.
A user coming from another suite arrives with files going back years. They want to open them, edit them, and save them — not import them as Markdown and lose the formatting.
odf-kit (Apache 2.0, zero runtime dependencies, pure TypeScript) is a JavaScript library that covers all of that for ODT:
• Open existing .odt files
• Open .docx files (so users can bring their existing documents and save them as ODT going forward)
• Generate ODT programmatically — create new documents from data, fill templates, build reports
• Edit in the Super editor — Lexical handles the editing, odf-kit handles the file format
• Save valid .odt that round-trips cleanly through LibreOffice, OnlyOffice, Collabora, and MS Word
Output passes the official OASIS ODF validator without errors or warnings (CI-enforced on every push). Works entirely in the browser, no LibreOffice or pandoc runtime — fits SN's existing client-side privacy constraints.
For the Super editor specifically — built on Lexical (per the standardnotes/lexical fork) — the entry point is two lines:
ts
import { lexicalToOdt } from "odf-kit/lexical";

const json = editor.getEditorState().toJSON();
const bytes = await lexicalToOdt(json, { pageFormat: "A4" });

Try it yourself right now — a live converter that runs entirely in your browser. Paste a SerializedEditorState and save a working .odt: https://githubnewbie0.github.io/odf-kit/tools/lexical-to-odt.html
Worth mentioning: the library also covers ODS (the spreadsheet half of OpenDocument), with .xlsx import alongside it, so secure-spreadsheets could gain native ODS support through the same library, if that is of interest.
Putting this on the radar — no urgency, just signaling the path is short and the licensing is permissive.
Project: https://github.com/GitHubNewbie0/odf-kit npm: odf-kit