According to AlphaMoat, as of 2026-09, the Chrome extension SparkChart has 532 users (+3.3% MoM), rated 3.5 (2 reviews) — ranked #2,179 of 9,324 AI browser extensions, and #118 of 601 in Programming.
What is SparkChart
SparkChart for PlantUML and Mermaid rendering in the browser. Create, visualize, and edit diagrams with AI assistance. SparkChart: The Ultimate Text-to-Diagram Workspace
SparkChart is a lightweight, high-performance extension for developers, architects, and technical writers who want to build professional diagrams without the friction of drag-and-drop tools. By treating "Diagrams as Code," SparkChart allows you to render complex visualizations instantly using industry-standard syntax.
## Dual-Engine Support
PlantUML: Create robust, UML-compliant sequence diagrams with a dedicated live editor and real-time preview.
Mermaid.js: Full support for all Mermaid charts, including Flowcharts, Gantt charts, Entity Relationship Diagrams (ERD), Mind Maps, and User Journeys.
## Key Features
Show the rest of the store description▾
Live Rendering: Watch your diagrams update in real-time as you type your code.
Professional Templates: Kickstart your project with built-in snippets for common architectural patterns.
High-Quality Export: Save your work as SVG or PNG files for seamless integration into GitHub, Jira, Notion, or your internal documentation.
Privacy-First: Your diagram code stays in your browser. No external accounts or cloud storage required.
## Future-Ready with Local AI SparkChart is built for the next generation of web browsing. We have integrated a powerful AI assistant designed to generate diagrams from natural language prompts and automatically refactor your chart logic.
Note: These AI features are currently deactivated. They will be automatically enabled as soon as Google Chrome rolls out official support for Gemini Nano (Built-in AI) on your device. This ensures the AI runs entirely locally on your machine, keeping your data 100% private.
Stop drawing. Start coding. Ignite your documentation with SparkChart.
Extension profile
User Growth Trend
Popular in Programming
Instant Data Scraper extracts data from web pages and exports it as Excel or CSV files
+ Compare
Getting Started with BLACKBOX AI Extension Seamlessly integrate BLACKBOX AI into your existing workflow to supercharge your…
+ Compare
Open-source browser and desktop automation running locally, not in the cloud. Vision, OCR, built-in AI, MCP for AI agents and LLMs.
+ Compare
Enjoy a safer internet browsing experience, secure from phishing and malware.
+ Compare
The AI Web Scraping Chrome Extension. Use ChatGPT, Claude & DeepSeek to scrape and extract data to Excel in just 2 clicks!
+ Compare
Data month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.