Lumo Docs
July 25, 2026•499 words
Lumo Docs & Sheets
AI-Powered Office Suite A rich text editor and spreadsheet with writing assistant, formula generation, image generation, and beautiful themes.
Powered by Lumo AI
What is Lumo Docs?
Lumo Docs is a free, browser-based rich text editor and AI-powered spreadsheet. Write smarter and crunch numbers faster with built-in AI assistance, 6 beautif
ul themes, and multi-language support.
| Themes | 6 beautiful themes |
| AI Writing Tools | 10+ smart tools |
| Languages | 9 supported |
| Image AI Modes | 3 modes |
Features
AI Writing Assistant
Fix grammar, rewrite text, translate to 9 languages, and transform your writing with 10+ smart tools — all powered by Lumo AI.
- Fix Text
- Rewrite
- Translate
- And 7 more tools
Auto-Fix While Typing
Toggle on auto-fix and watch your text improve in real-time. Detects complete sentences and fixes them automatically after a short pause.
Always watching, never interrupting.
AI Image Studio
Generate images from text, describe uploaded images with AI, or edit existing images with natural language instructions.
- Generate
- Describe
- Edit
Lumo Sheets
An AI-powered spreadsheet with formula generation, formula explanation, data analysis, and 6 matching themes. Built right alongside the editor.
- Formula Generator
- Formula Explainer
- Data Helper
6 Beautiful Themes
Switch between Light, Dark, Sepia, Ocean, Rose, and Mint themes. Every element adapts — editor, toolbar, modals, and code blocks.
| Light | Dark | Sepia | Ocean | Rose | Mint |
Code Blocks
Embed clean, styled code blocks directly in your documents. Perfect for technical documentation and sharing code snippets.
const editor = new EditorJS('#root');
Full-Spectrum Formatting
Bold, italic, headings, lists, blockquotes, links, colors, alignment, superscript, subscript, and more. Everything a pro editor needs.
B I U ~~S~~ H1 H2
Supported Languages
The AI assistant understands and adapts to your language with native-level fluency:
| Flag | Language |
|---|---|
| :us: | English |
| :brazil: | Portugues |
| :es: | Espanol |
| :fr: | Francais |
| :de: | Deutsch |
| :it: | Italiano |
| :netherlands: | Nederlands |
| :jp: | Japanese |
| :cn: | Chinese |
Writing Styles
Choose a writing style and the AI will match it perfectly:
| Style | Description |
|---|---|
| Professional | Formal & polished |
| Casual | Friendly & relaxed |
| Concise | Short & to the point |
| Academic | Scholarly & rigorous |
| Creative | Expressive & vivid |
| Chat | Messenger style |
| Journalistic | News & editorial |
| Technical | Precise & detailed |
Quick Start
- Open Lumo Docs or Lumo Sheets
- Set your API key (get one at carlostkd.ch/api-tracker/keys.php)
- Start writing or crunching numbers with AI assistance