Software Alternatives, Accelerators & Startups

Deno VS Preact.js

Compare Deno VS Preact.js and see what are their differences

Deno logo Deno

A secure runtime for JavaScript and TypeScript built with V8, Rust, and Tokio.

Preact.js logo Preact.js

Preact is a fast 3kB alternative to React with the same modern API. Components & Virtual DOM.
  • Deno Landing page
    Landing page //
    2023-10-15
  • Preact.js Landing page
    Landing page //
    2023-05-11

Deno features and specs

  • Security
    Deno has a secure-by-default approach, requiring explicit permission for file, network, and environment access, which reduces the risk of malicious code.
  • Built-in Tooling
    Deno includes built-in tools like a dependency inspector, a code formatter, and a test runner, reducing the need for additional setup.
  • Modern JavaScript/TypeScript
    Deno supports modern JavaScript and has built-in TypeScript support, making it easier to work with contemporary codebases without additional configuration.
  • Simplified Module Management
    Deno uses URLs for importing modules, eliminating the need for a package manager like npm and simplifying dependency management.
  • Compatibility with Web Standards
    Deno aims to be browser-compatible, adhering closely to web standards like the Fetch API, making it easier to share code between the server and the client.

Possible disadvantages of Deno

  • Ecosystem Maturity
    Deno's ecosystem is relatively new compared to Node.js, resulting in fewer libraries, tools, and community resources.
  • Breaking Changes
    Due to its rapid development, Deno can have breaking changes between versions, potentially requiring more frequent updates and code adjustments.
  • Performance
    Deno's performance may not match that of optimized Node.js applications, especially for certain workloads where Node.js has been highly tuned.
  • Learning Curve
    Even though Deno is designed to be familiar to JavaScript and TypeScript developers, it introduces new concepts (like secure-by-default) that may require a learning curve.
  • Limited Enterprise Adoption
    Being relatively new, Deno has limited enterprise adoption, which might make it less appealing for large-scale or long-term projects that rely on a robust support ecosystem.

Preact.js features and specs

  • Size
    Preact is very small in size (about 3KB gzipped), which makes it easy to load and faster to execute, resulting in improved performance and quicker load times.
  • Compatibility
    Preact is largely compatible with React, allowing developers to switch to Preact with minimal code changes. This makes it easier to adopt for projects already using React.
  • Performance
    Due to its small size and efficient design, Preact offers excellent performance, especially on low-powered devices and in applications with heavy user interactions.
  • Ecosystem
    Preact can work with many tools and libraries that are designed for React, giving developers access to a rich ecosystem of resources.
  • Community
    Preact has an active and growing community that provides support, plugins, and third-party tools, making it easier for developers to find solutions and share knowledge.

Possible disadvantages of Preact.js

  • Feature Set
    While Preact covers most of the core React features, it lacks some of the advanced functionality present in React, which may require additional workarounds or third-party libraries.
  • Learning Curve
    For developers coming from a non-React background, learning Preact might involve a learning curve, particularly because of its similarities and subtle differences with React.
  • Tooling Compatibility
    Although many tools designed for React can work with Preact, some might not be directly compatible, requiring additional configuration or patches.
  • Community Size
    While Preact has a supportive community, it is smaller compared to the massive React community, which can result in fewer available resources and third-party packages.
  • Maturity
    Preact, being newer and less widely adopted than React, might not have the same level of battle-tested reliability for all use cases, especially for large scale applications.

Deno videos

Why nobody is using Deno?

More videos:

  • Review - What is Deno & Will it replace Node.js?
  • Review - Will Deno replace Node.js: Which programming language is better? | TechLead

Preact.js videos

JS frameworks are replaceable

Category Popularity

0-100% (relative to Deno and Preact.js)
Typescript
100 100%
0% 0
Javascript UI Libraries
0 0%
100% 100
JavaScript
68 68%
32% 32
JavaScript Framework
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Deno and Preact.js

Deno Reviews

We have no reviews of Deno yet.
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Preact.js Reviews

Top JavaScript Frameworks in 2025
PreactJS is a JavaScript library that is said to be the fast 3Kb alternative to ReactJS using the same modern API. It implements the fastest virtual DOM compared to other frameworks in the market. Moreover, it is one of the smallest libraries in terms of size.
Source: solguruz.com
20 Next.js Alternatives Worth Considering
Preact is like React’s little sibling, smaller in size but with the same familiar moves. It’s cutting down the fluff and zipping through tasks with less overhead. When performance budgets are tight, Preact wiggles in perfectly.
20 Best JavaScript Frameworks For 2023
Preact is built with the same core principle of React – A component-based approach with Virtual DOM while completely compatible with React. It can even use React packages without compromising on speed, performance, and leaner size. In instances where the full potential of React isn’t necessary, most developers even use React during development and switch to Preact for...
Top 15 jQuery Alternatives To Know
ReactJS is a powerful JavaScript library to create user interfaces. Developers can design easy views at each stage in the application and there is regular update and rendering for the actual components whenever there is any data alteration. It is component-driven and creates encapsulated components that manage their own state.
Top 5 JavaScript Frameworks To Learn in 2021
But according to the graph above, we can notice a decrease in interest in Preact. This might result from having many similar frameworks with the same specs, like react-lite, Inferno, etc. However, knowing a framework like Preact will be useful for your development journey.
Source: enlear.academy

Social recommendations and mentions

Based on our record, Deno should be more popular than Preact.js. It has been mentiond 200 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.

Deno mentions (200)

  • Benchmarking in Node.js vs Deno: A Comprehensive Comparison
    Deno.bench("URL parsing", () => { new URL("https://deno.land"); }); Deno.bench("Async method", async () => { await crypto.subtle.digest("SHA-256", new Uint8Array([1, 2, 3])); }); Deno.bench({ name: "Long form", fn: () => { new URL("https://deno.land"); }, }); Deno.bench({ name: "Date.now()", group: "timing", baseline: true, fn: () => { Date.now(); }, }); Deno.bench({ name:... - Source: dev.to / 5 months ago
  • Deno 2.0 REST API Explained: Faster, Secure JavaScript Development
    // Importing the serve function from Deno's standard library Import { serve } from "https://deno.land/std@0.196.0/http/server.ts"; // Function to handle requests Async function handler(req: Request): Promise { const { pathname, searchParams } = new URL(req.url); // Handling different routes if (pathname === "/api/greet" && req.method === "GET") { const name = searchParams.get("name") ||... - Source: dev.to / 7 months ago
  • Building a Simple Todo App with Deno and Oak
    Import { Application, Router } from "https://deno.land/x/oak/mod.ts";. - Source: dev.to / 7 months ago
  • LogTape: Zero-Dependency Logging for JavaScript That Just Works
    LogTape is a shiny new logging library for JavaScript and TypeScript that's designed with one goal in mind: to make logging simple, flexible, and hassle-free across all your JavaScript environments. Whether you're building applications for Deno, Node.js, Bun, edge functions, or browsers, LogTape has got you covered. - Source: dev.to / 9 months ago
  • Alternatives to npm: Exploring Different Package Managers for JavaScript Development
    You can install Deno by following the instructions on its official website. - Source: dev.to / 11 months ago
View more

Preact.js mentions (93)

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What are some alternatives?

When comparing Deno and Preact.js, you can also consider the following products

Bun.sh - Bun is an all-in-one JavaScript runtime & toolkit designed for speed, complete with a bundler, test runner, and Node.js-compatible package manager.

Svelte - Cybernetically enhanced web apps

Node.js - Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications

Vue.js - Reactive Components for Modern Web Interfaces

Fresh Framework - Fresh is a next generation web framework, built for speed, reliability, and simplicity.

Inferno - An extremely fast React-like javascript library for building modern user interfaces.