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Deno vs PDF.js: What are the differences?
Introduction
Deno and PDF.js are two popular technologies used in web development. While Deno is a secure runtime for JavaScript and TypeScript, PDF.js is a JavaScript library for rendering PDF documents in the browser. In this article, we will discuss the key differences between Deno and PDF.js.
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Language Supported:
- Deno supports both JavaScript and TypeScript, allowing developers to write code in either language.
- PDF.js is primarily focused on JavaScript and is specifically designed to work with PDF documents.
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Runtime Environment:
- Deno provides a secure runtime environment for executing JavaScript and TypeScript code. It has security features like permissions-based access to resources and sandboxed execution.
- PDF.js, on the other hand, is a library that runs within the browser environment. It does not provide a separate runtime environment like Deno.
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Functionality:
- Deno offers a wide range of functionalities beyond just executing scripts, including built-in module system, file system access, HTTP/HTTPS requests, and more.
- PDF.js is specifically designed to render PDF documents in the browser. It provides features like text extraction, search functionality, annotation support, and page rendering.
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Security Model:
- Deno has a security model that allows or restricts access to resources based on permissions. It provides fine-grained control over file system access, network access, and other resources.
- PDF.js, being a library running within the browser, operates under the security model enforced by the browser itself. It does not have the same level of control over resource access as Deno.
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Development Community:
- The Deno community is still growing and has a smaller user base compared to PDF.js.
- PDF.js has been around for a longer time and has a large and active community of developers. It has been widely adopted and is used in various applications.
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Use Cases:
- Deno can be used for building various types of applications, ranging from simple scripts to complex web servers and APIs.
- PDF.js is primarily used for handling PDF documents in web applications, allowing developers to render, manipulate, and interact with PDF files.
In summary, Deno and PDF.js differ in terms of the supported languages, runtime environment, functionality, security model, development community, and use cases. Deno offers a secure runtime for executing JavaScript and TypeScript code with advanced features, while PDF.js is a JavaScript library designed specifically for working with PDF documents in the browser.
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Learn MorePros of Deno
Pros of PDF.js
Pros of Deno
- Typescript18
- Secure14
- Open source13
- Formatting9
- Javascript9
- Great std library9
- Testing7
- ESM6
- Easy Config5
- No package-lock.json3
Pros of PDF.js
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Cons of Deno
Cons of PDF.js
Cons of Deno
- Still in early development3
- Bad Rust plugin support1
Cons of PDF.js
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- No public GitHub repository available -
What is Deno?
It is a secure runtime for JavaScript and TypeScript built with V8, Rust, and Tokio.
What is PDF.js?
It is a Portable Document Format (PDF) viewer that is built with HTML5. It is community-driven and supported by Mozilla Labs. The goal is to create a general-purpose, web standards-based platform for parsing and rendering PDFs.
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What companies use Deno?
What companies use PDF.js?
What companies use Deno?
What companies use PDF.js?
See which teams inside your own company are using Deno or PDF.js.
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What tools integrate with Deno?
What tools integrate with PDF.js?
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What are some alternatives to Deno and PDF.js?
Node.js
Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
Golang
Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.
Rust
Rust is a systems programming language that combines strong compile-time correctness guarantees with fast performance. It improves upon the ideas of other systems languages like C++ by providing guaranteed memory safety (no crashes, no data races) and complete control over the lifecycle of memory.
Python
Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.
npm
npm is the command-line interface to the npm ecosystem. It is battle-tested, surprisingly flexible, and used by hundreds of thousands of JavaScript developers every day.