Software Alternatives & Startups

FastAPI VS BundlePhobia

Compare FastAPI VS BundlePhobia and see what are their differences

FastAPI logo FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

BundlePhobia logo BundlePhobia

Find the performance impact of adding a npm package to your bundle.
  • FastAPI Landing page
    Landing page //
    2023-05-14
  • BundlePhobia Landing page
    Landing page //
    2022-07-14

FastAPI features and specs

  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages of FastAPI

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

BundlePhobia features and specs

  • Size Analysis
    BundlePhobia allows developers to easily check the size of npm packages before including them in their projects, helping to keep overall project size down.
  • Dependency Insight
    It provides insights into package dependencies, enabling developers to understand what additional packages might be included with a primary package.
  • Speed Optimization
    By identifying large packages, developers can make informed decisions to optimize their application's load times and performance.
  • Comparative Analysis
    BundlePhobia allows for comparison between different versions of a package or between different packages, assisting in selecting the optimal package for a project.
  • Easy to Use
    The user interface of BundlePhobia is straightforward and intuitive, making it accessible for developers of all experience levels.

Possible disadvantages of BundlePhobia

  • Limited to npm
    BundlePhobia only analyzes packages available on npm, so developers using other package managers like Yarn might not find full compatibility.
  • Dynamic Challenges
    Dynamic dependencies or environment-specific issues are not accounted for, which might lead to inaccuracies in the real-world size analysis.
  • Cache Delay
    There may be a delay in updates due to caching, meaning newly published versions of packages may not be immediately visible on BundlePhobia.
  • Single Metric Focus
    The focus is largely on package size, without considering other important factors such as performance impact, security vulnerabilities, or overall package quality.
  • Requires Internet Connection
    Developers need an active internet connection to access BundlePhobia's web-based service, which can limit usability in offline environments.

Analysis of FastAPI

Overall verdict

  • FastAPI is widely regarded as a good choice, especially for applications that require high performance, scalability, and modern Python features. It is suitable for both simple and complex projects, making it a versatile tool in the web development ecosystem.

Why this product is good

  • FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. It is built on top of Starlette for web framework capabilities and Pydantic for data validation and settings management. FastAPI is known for its excellent performance, automatic generation of interactive API documentation (with Swagger and Redoc), and support for asynchronous programming. Developers appreciate its ease of use, detailed documentation, and helpful error messages.

Recommended for

  • Developers building RESTful APIs
  • Teams looking for a high-performance ASGI-based web framework
  • Projects that require asynchronous programming capabilities
  • Applications needing automatic generation of interactive API documentation
  • Python developers who prefer utilizing type hints for code clarity and validation

FastAPI videos

FastAPI from the ground up

More videos:

  • Tutorial - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • Review - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

BundlePhobia videos

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Category Popularity

0-100% (relative to FastAPI and BundlePhobia)
Developer Tools
89 89%
11% 11
API Tools
100 100%
0% 0
JavaScript Tools
0 0%
100% 100
Web Frameworks
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare FastAPI and BundlePhobia

FastAPI Reviews

  1. Kurslog team
    · Working at Kurslog ·

    When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding.

    The combination of Pydantic for data validation and built-in async support keeps our shared codebase clean, strictly typed, and reliable. But the biggest highlight for our cross-functional team is the automatic generation of interactive OpenAPI (Swagger) documentation. Our frontend and mobile developers no longer have to wait for backend engineers to manually update API docs; everything stays perfectly in sync automatically. It has drastically improved our team's communication and delivery speed.

    Pros:    Blazing fast performance (on par with nodejs and go)|Native asynchronous support out of the box|Automatic, interactive documentation generation (swagger/redoc)|Strict typing and data validation with pydantic
    Cons:    Smaller plug-and-play ecosystem compared to older frameworks like django|Requires our architects to design the project structure and directory layout from scratch

The 20 Best Laravel Alternatives for Web Development
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
25 Python Frameworks to Master
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack frameworks like Django.
Source: kinsta.com
3 Web Frameworks to Use With Python
myapp/ is the main directory of your FastAPI application. It includes all the other files and directories needed for the application.static/ is a directory used to store static assets such as CSS, JavaScript, and image files. These assets are served directly by the web server and are typically used to add visual styling and interactivity to the application.css/, img/, js/...
Best Alternatives to FastAPI App Free for Windows (2021)
FastAPI Alternative – So many alternatives app to FastAPI that you must to know out there. And, looking for an ideal software was not easy matter. Lucky you, at this page you can find the best replacement app for FastAPI. So what you are waiting for, get the latest FastAPI alternative app for Windows 10 from this page.
Top 5 Back-End Frameworks to Consider for Web Development in 2021
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. It is fast when compared to other major Python frameworks like Flask and Django. FastAPI gives great flexibility to fulfill businesses’ API needs in today’s evolving world.

BundlePhobia Reviews

We have no reviews of BundlePhobia yet.
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Social recommendations and mentions

Based on our record, FastAPI should be more popular than BundlePhobia. It has been mentiond 312 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

FastAPI mentions (312)

  • I Built My First Machine Learning API — Here's Everything I Learned
    I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / 25 days ago
  • Shipping Sovereign SDK: Cryptographic Forensic Receipts and the End of the AI "Prose Tax"
    The Sovereign SDK is a Python-native framework designed to minimize prose overhead while generating ironclad, cryptographic execution receipts for AI agents, complete with drop-in FastAPI/Starlette ASGI middleware. - Source: dev.to / 3 months ago
  • 5-Minute AI Jobs and Closed Tabs — Why We Built Replay-Then-Tail SSE
    We had a feature in production where a single user request could run for five-plus minutes — fetch documents, chunk them, hit an LLM per chunk, synthesize a final answer. We did the obvious thing first: a FastAPI handler that ran the pipeline and streamed progress back to the browser over Server-Sent Events. - Source: dev.to / 4 months ago
  • FastAPI With LangChain and MongoDB
    FastAPI is a Python framework for building APIs quickly, efficiently, and with very little code. - Source: dev.to / 5 months ago
  • I Built A " CrowdSense AI " : A Scalable, Context-Aware Platform for Smart Stadiums
    Backend: Python-based FastAPI for its asynchronous I/O capabilities and rapid JSON serialization. - Source: dev.to / 5 months ago
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BundlePhobia mentions (59)

  • Modern React Performance Without the Overhead
    Check packages on Bundlephobia before importing. A date-picker that pulls in 80 KB gzipped when you need one function is a problem you choose. - Source: dev.to / 3 months ago
  • JavaScript Bundle Size Optimization: From 2MB to 200KB — A Practical Guide
    Before adding any npm package, check bundlephobia.com for the bundle cost. Example: lodash costs 70KB — lodash-es with tree shaking costs 0-70KB depending on what you import. - Source: dev.to / 6 months ago
  • Your package.json Is Lying to You
    Or use bundlephobia.com for a nicer view of what actually ends up in your bundle. - Source: dev.to / 7 months ago
  • Bundle size badges are just numbers
    There are two excellent services for estimating package size - Bundlephobia and Package Phobia. While the first calculates "bundle size", the second calculates "publish size" and "install size". The "install size" is the result of recursively summing up all the package dependencies. The result of such an evaluation may surprise. - Source: dev.to / 7 months ago
  • The hidden costs in your pacakge.json
    We can use bundlephobia.com to quickly check the ‘cost’ of adding a npm library to your bundle. Upon checking, it tells us moment.js clocks in at around 300KB, while date-fns is a much leaner 77KB:. - Source: dev.to / about 1 year ago
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What are some alternatives?

When comparing FastAPI and BundlePhobia, you can also consider the following products

Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

GTmetrix - GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.

Django - The Web framework for perfectionists with deadlines

bundlejs - A quick and easy way to bundle, minify, and compress (gzip and brotli) your ts, js, jsx and npm projects all online, with the bundle file size.

ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

Snyk - Snyk helps you use open source and stay secure. Continuously find and fix vulnerabilities for npm, Maven, NuGet, RubyGems, PyPI and much more.