Ship a collaborative editor
without building the backend
Accounts, real-time collaboration, cloud document storage, and HTML / Markdown / JSON conversion — behind one simple API. Hosted for you, or run it on your own servers.
Free tier includes 3 documents, collaboration, and 200 conversions / month.
A complete backend, batteries included
Real-time collaboration
Multiplayer editing with live cursors and presence, powered by CRDTs. Per-document authorization keeps rooms private.
Cloud documents
Store, autosave, and version documents. A REST API and a Google-Docs-style workspace out of the box.
Format conversion
Convert between HTML, Markdown, and JSON at scale — the same engine the editor uses on the client.
Accounts & API keys
Registration, sessions, per-tenant API keys, and plan-based quotas. Two auth planes: console and data.
Usage & quotas
Track documents, conversions, and collaboration rooms against plan limits, enforced automatically.
Self-host or hosted
Runs on SQL Server behind IIS in your own datacenter, or use the managed service. Same API either way.
Convert, store, collaborate — in a few lines
Authenticate with an API key and call the endpoints your editor needs. No SDK lock-in; it's plain HTTP and WebSockets.
Full API reference →# Convert Markdown to HTML
curl -X POST https://cloud.richtexteditor.com/v1/convert \
-H "Authorization: Bearer $RTE_KEY" \
-H "Content-Type: application/json" \
-d '{ "from": "markdown", "to": "html",
"content": "# Hello **world**" }'
# Create a cloud document
curl -X POST https://cloud.richtexteditor.com/v1/documents \
-H "Authorization: Bearer $RTE_KEY" \
-d '{ "title": "Notes", "content": "<p>Hi</p>" }'Start building today
Create a free account and get an API key in under a minute.
Create your free account