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Fast.com vs Mermaid

Professional comparison and analysis to help you choose the right software solution for your needs.

Fast.com icon
Fast.com
Mermaid icon
Mermaid

Fast.com vs Mermaid: The Verdict

⚡ Summary:

Fast.com: Fast.com is a free, easy-to-use web application for testing internet speeds. Developed by Netflix, it provides fast, reliable, and unbiased speed test results in just one click.

Mermaid: Mermaid is an open-source tool that allows you to create diagrams and visualizations using text and code. It is designed to integrate with documentation sites and wikis to add charts and graphs through a simple markdown-inspired script language. The key benefit is the ability to generate complex diagrams that are portable, themeable, and easy to edit programmatically.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Fast.com Mermaid
Sugggest Score — —
Category Online Services Development
Pricing — Open Source

Product Overview

Fast.com
Fast.com

Description: Fast.com is a free, easy-to-use web application for testing internet speeds. Developed by Netflix, it provides fast, reliable, and unbiased speed test results in just one click.

Type: software

Mermaid
Mermaid

Description: Mermaid is an open-source tool that allows you to create diagrams and visualizations using text and code. It is designed to integrate with documentation sites and wikis to add charts and graphs through a simple markdown-inspired script language. The key benefit is the ability to generate complex diagrams that are portable, themeable, and easy to edit programmatically.

Type: software

Pricing: Open Source

Key Features Comparison

Fast.com
Fast.com Features
  • Quick and easy internet speed test
  • Minimal interface for fast loading
  • Test download speed
  • Test upload speed
  • View real-time graph of speed
  • Get ping time (latency)
  • No login required
  • Ad-free
Mermaid
Mermaid Features
  • Diagram creation using text syntax
  • Support for flowcharts, sequence diagrams, Gantt charts, pie charts, etc
  • Integration with documentation sites and wikis
  • Ability to generate SVG, PNG and PDF images
  • Customizable themes
  • JavaScript library that runs in the browser

Pros & Cons Analysis

Fast.com
Fast.com

Pros

  • Simple and fast
  • Reliable results
  • No account needed
  • Free to use
  • Created by Netflix
  • Lightweight and fast loading

Cons

  • Limited features compared to other speed tests
  • Only tests speed to Netflix servers
  • No option to select server location
  • No ISP speed test ratings
  • No retention of results history
Mermaid
Mermaid

Pros

  • Simple and intuitive syntax
  • Good documentation and examples
  • Active development community
  • Themes allow extensive customization
  • Diagrams are portable and easy to embed
  • Lightweight and easy to integrate

Cons

  • Limited features compared to desktop diagramming tools
  • Browser support can be inconsistent
  • Complex diagrams can require more intricate syntax
  • Only creates static images, not interactive diagrams

Pricing Comparison

Fast.com
Fast.com
  • Not listed
Mermaid
Mermaid
  • Open Source

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Learn More About Each Product

Fast.com
Fast.com
Reviews, pricing & alternatives →
Mermaid
Mermaid
Reviews, pricing & alternatives →

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