Open Source JavaScript Formats and Protocols
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JavaScript Formats and Protocols
View related business solutionsBrowse free open source JavaScript Formats and Protocols and projects below. Use the toggles on the left to filter open source JavaScript Formats and Protocols by OS, license, language, programming language, and project status.
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FlyingMouse Format
A mouse-themed, offline Windows file converter
FlyingMouse Format is a desktop file converter built for offline use on Windows, with additional macOS builds available. It converts images, text, Office and WPS documents, spreadsheets, presentations, PDFs, audio, video, ZIP files, and several ebook formats. Bundled engines such as FFmpeg, LibreOffice, Poppler, and Tesseract handle media conversion, document processing, PDF work, and OCR locally. Batch jobs show per-file progress, results, and failure reasons. The app remembers target formats and save locations and can preview converted content. It also provides a CLI and an installable agent skill for Codex, Claude, and compatible agent environments. -
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BentoPDF
A Privacy First PDF Toolkit
BentoPDF is a self-hosted, open-source PDF toolkit that provides a suite of local PDF manipulation features for users who want full control over their documents without relying on cloud PDF services. It offers functionality to merge, split, compress, rotate, and convert PDFs through an easy-to-deploy container or local installation, making it ideal for individuals and teams that handle large volumes of PDF files regularly. Because it runs entirely on your own system or server, BentoPDF helps ensure that sensitive documents never leave your environment — a critical consideration for privacy-conscious users or organizations with strict data policies. Its design aims to balance robust feature coverage with a simple setup process, typically involving a Docker image so you can start using the toolkit with minimal configuration. BentoPDF also supports automation via command line parameters or API calls, so it can be integrated into batch workflows or document pipelines. -
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PDF.js
A PDF Reader in JavaScript
PDF.js is a web standards-based platform for parsing and rendering Portable Document Formats (PDFs). Open source and built with HTML5, this PDF viewer is supported by a great community and Mozilla Labs. PDF.js can be used on both modern and older browsers, and is built into version 19+ of Firefox. -
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asar
Simple extensive tar-like archive format with indexing
Asar is a simple extensive archive format, it works like tar that concatenates all files together without compression while having random access support. You can pass in a transform option, which is a function, that either returns nothing or a stream. Transform. The latter will be used on files that will be in the .asar file to transform them. There is also an unofficial grunt plugin to generate asar archives at bwin/grunt-asar. Asar uses Pickle to safely serialize binary value to file, there is also a node.js binding of Pickle class. The header_size and header are serialized with Pickle class, and header_size's Pickle object is 8 bytes. offset and size record the information to read the file from the archive, the offset starts from 0 so you have to manually add the size of header_size and header to the offset to get the real offset of the file. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Twemoji
Simple library that provides standard Unicode emoji for all platforms
Twitter’s open source emoji has you covered for all your project's emoji needs. With support for the latest Unicode emoji specification, featuring 3,245 emojis, and all for free. As an open source project, attribution is critical from a legal, practical and motivational perspective in our opinion. The graphics are licensed under the CC-BY 4.0 which has a pretty good guide on best practices for attribution. Although there are two kinds of parsing supported by this utility, we recommend you use DOM parsing, explained below. Each type of parsing accepts a callback to generate an image source or an options object with parsing info. The second kind of parsing is string parsing. This is unrecommended because this method does not sanitize the string or otherwise prevent malicious code from being executed; such sanitization is out of scope. -
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tabler
Tabler is free and open-source HTML Dashboard UI Kit
Tabler is fully responsive and compatible with all modern browsers. Thanks to its modern, user-friendly design you can create a fully functional interface that users will love! Choose the layouts and components you need and customize them to make your design consistent and eye-catching. Every component has been created with attention to detail to make your interface beautiful! We've created this admin panel for everyone who wants to create templates based on our pre-made components. Our mission is to deliver a user-friendly, clear and easy administration panel that can be used by both simple websites and sophisticated systems. The only requirement is basic HTML and CSS (and some Liquid) knowledge, as a reward, you'll be able to manage and visualise different types of data in the easiest possible way! With the support for mobile, tablet and desktop displays, it doesn’t matter what device you’re using. Tabler is responsive in all major browsers. -
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phpipam
phpipam open-source IP address management
phpipam is an open-source web IP address management application (IPAM). Its goal is to provide light, modern and useful IP address management. It is php-based application with MySQL database backend, using jQuery libraries, ajax and some HTML5/CSS3 features. -
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htmx
Hgh power tools for HTML
htmx gives you access to AJAX, CSS Transitions, WebSockets and Server-Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext. htmx is small (~14k min.gz’d), dependency-free, extendable & has reduced code base sizes by 67% when compared with react. -
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Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit. You can change raw pdf objects (for advanced users) or use many gui functions. Functionality can be easily extended using a scripting language (ECMAScript).
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Go from Code to Production URL in SecondsSkip the Kubernetes configs. Cloud Run handles HTTPS, scaling, and infrastructure automatically. Two million requests free per month.
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PDFCraft
PDFCraft is a free, privacy-focused PDF toolkit
PDFCraft is an extensible toolkit for creating, editing, and transforming PDF documents with both a graphical interface and a scripting API, making it useful for users ranging from casual editors to automated document processors. At its core, the project provides a clean, modern UI where you can rearrange pages, annotate text, insert images, fill forms, and export to multiple formats, all without needing a heavyweight commercial PDF suite. But beyond manual editing, it also offers a programmable layer so developers can write scripts to batch process documents, generate templated reports, or extract structured data from PDFs for integration in workflows. The design emphasizes quality and compatibility: output PDFs render accurately across readers, preserve metadata, and support interactive elements like hyperlinks and form fields. -
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jsPDF
HTML5 client solution for generating PDFs
The leading HTML5 client solution for generating PDFs. Perfect for event tickets, reports, certificates, you name it! PDFs are ubiquitous across the web, with virtually every enterprise relying on them to share documents. We created jsPDF to solve a major problem with how pdf files were being generated. We decided to make it open-source to allow a community of developers to expand on it. -
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SingleFile
Web Extension for saving a copy of complete web page in a single file
Web Extension for Firefox/Chrome/MS Edge and CLI tool to save a faithful copy of an entire web page in a single HTML file. SingleFile is a Web Extension (and a CLI tool) compatible with Chrome, Firefox (Desktop and Mobile), Microsoft Edge, Vivaldi, Brave, Waterfox, Yandex Browser, and Opera. It helps you to save a complete web page into a single HTML file. Wait until the page is fully loaded. Click on the SingleFile button in the extension toolbar to save the page. You can click again on the button to cancel the action when processing a page. Open the context menu by right-clicking the SingleFile button in the extension toolbar or on the webpage. It allows you to save the current tab, the selected content, the selected frame. With auto-save active, pages are automatically saved every time after being loaded (or before being unloaded if not). Right-click on the SingleFile button and select "Manage extension" (Firefox) / "Options" (Chrome) to open the options page. -
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DOMPurify
XSS sanitizer for HTML, MathML and SVG
A DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, SVG and MathML. It's also very simple to use and get started with. DOMPurify was started in February 2014 and, meanwhile, has reached version 2.3.0. DOMPurify is written in JavaScript and works in all modern browsers (Safari (10+), Opera (15+), Internet Explorer (10+), Edge, Firefox and Chrome - as well as almost anything else using Blink or WebKit). It doesn't break on MSIE6 or other legacy browsers. It either uses a fall-back or simply does nothing. Our automated tests cover 17 different browsers right now, more to come. We also cover Node.js v14.15.1, v15.4.0, running DOMPurify on jsdom. Older Node.js versions are known to work as well. DOMPurify is written by security people who have vast background in web attacks and XSS. -
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JSON Editor
A web-based tool to view, edit, format, and validate JSON
JSON Editor is a web-based JSON editing and visualization tool designed for viewing, editing, formatting, validating, and transforming JSON documents in multiple interactive modes. The project provides several editing interfaces including tree view, code editor, form-based editing, and plain text modes, allowing users to work with structured data in the format most suitable for their workflow. It can be embedded directly into web applications as a reusable component and supports large JSON documents with schema validation and formatting capabilities. JSONEditor emphasizes usability by combining developer-focused functionality with accessible visual editing tools for non-technical users. The library supports modern browser environments and integrates with JavaScript module systems for flexible deployment. Its versatility has made it a popular solution for API debugging, configuration management, data inspection, and administrative interfaces. -
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CKEditor 5
Powerful rich text editor framework with a modular architecture
CKEditor 5 is a powerful rich text editor framework with a modular architecture, modern integrations, and features like collaborative editing. CKEditor 5 provides every type of WYSIWYG editing solution imaginable. From editors similar to Google Docs and Medium, to Slack or Twitter like applications, all is possible within a single editing framework. Builds are ready-to-use solutions to common editing needs. Every build can be customized to include a completely custom set of features. Features are flexible. You can write a custom feature once, and reuse it everywhere! CKEditor 5 is an ultra-modern JavaScript rich text editor with MVC architecture, custom data model and virtual DOM. It is written from scratch in ES6 and has excellent webpack support. Native integrations with Angular, React and Vue.js are available for your convenience. Building a mobile or cross-platform desktop application with JavaScript? CKEditor 5 is compatible with Electron and mobile devices (Android, iOS). -
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JSON Server
Get a full fake REST API with zero coding
Get a full fake REST API with zero coding in less than 30 seconds (seriously). Created with <3 for front-end developers who need a quick back-end for prototyping and mocking. If you need to add authentication, validation, or any behavior, you can use the project as a module in combination with other Express middleware. You can deploy JSON Server. For example, JSONPlaceholder is an online fake API powered by JSON Server and running on Heroku. If you make POST, PUT, PATCH or DELETE requests, changes will be automatically and safely saved to db.json using lowdb. You can use JSON Server to serve your HTML, JS and CSS, simply create a ./public directory or use --static to set a different static files directory. There are many ways to set up SSL in development. One simple way is to use hotel. -
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pdfmake
Client/server side PDF printing in pure JavaScript
Print PDFs directly in the browser or delegate it to your NodeJS backend. Use the same document definition in both cases. Forget about manual x, y calculations. Declare document structure and let pdfmake do the rest. Use paragraphs, columns, lists, tables, canvas, etc. Declare your own styles, use custom fonts, build a DSL and extend the framework. Provides a set of options to disable font layout cache and to control when pages are flushed to the output file. Pdfmake is runnable in browser (client-side) and in Node.js (server-side). PDF name can be defined only by using metadata title property. Add-ons used in browsers can affect the functionality of pdfmake (especially for open() and print()). If pdfmake is not working try disable add-ons in browser. The supported browsers are Internet Explorer 10+, Edge 12+, Firefox, Chrome, Opera and Safari. -
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Apache Guacamole
HTML5 Clientless Remote Desktop
Apache Guacamole is a clientless remote desktop gateway. It supports standard protocols like VNC, RDP, and SSH. We call it clientless because no plugins or client software are required. Thanks to HTML5, once Guacamole is installed on a server, all you need to access your desktops is a web browser. -
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html-loader
HTML Loader
Exports HTML as a string. HTML is minimized when the compiler demands. The true value enables the processing of all default elements and attributes, the false value disables the processing of all attributes. Allows you to specify which tags and attributes to process, filter them, filter urls and process sources starting with /. Allows to setup which tags and attributes to process and how, as well as the ability to filter some of them. Filter can also be used to extend the supported elements and attributes. By default, the parser in html-loader interprets content inside noscript tags as #text, so processing of content inside this tag will be ignored. A very common scenario is exporting the HTML into their own .html file, to serve them directly instead of injecting with javascript. -
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Developed by the Web Technology Group at Appalachian State University, phpWebSite provides a complete web site content management system ( CMS ). All client output is XHTML 1.0 and meets the W3C's Web Accessibility Initiative requirements.
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Lighthouse
Automated auditing, performance metrics, & best practices for the web
Lighthouse is an open-source, automated tool that analyzes and audits web apps and web pages in order to improve their quality. Lighthouse collects modern performance metrics and insights on developer best practices; auditing for performance, accessibility, SEO and more. After auditing it produces a report either in JSON or HTML. Included in the report is a reference doc that explains the importance of the audit and how to fix the problem areas, which you can use to improve the web app or web page. Lighthouse can be integrated directly into the Chrome DevTools with its own panel. To run it, you would simply have to select the Lighthouse panel and click on "Generate report". It can also be run from the command line, or as a Node module. -
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Tabulator
Interactive tables and data grids for JavaScript
Tabulator allows you to create interactive tables in seconds from any HTML Table, Javascript Array or JSON formatted data. Simply include the library and the css in your project and you're away! Tabulator has an enormous number of features to help customize your table experience to your needs. With new features released every month, there is bound to be something to get your interactive table juices flowing. Tabulator is built to work with all the major front-end JavaScript frameworks including React, Angular and Vue. Header filters and programmatic filters can be set independently allowing you to use a header filter to further restrict the rows shown in an already filtered data set. If an input element is used as the filter element, the table will be filtered in real-time as the user types in the input element. To prevent excessive redrawing of the table Tabulator will wait 300 milliseconds after the user has finished typing before triggering the filter. -
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WebViewer UI
WebViewer UI built in React
WebViewer UI sits on top of WebViewer, a powerful JavaScript-based PDF Library that's part of the PDFTron PDF SDK. Built in React, WebViewer UI provides a slick out-of-the-box responsive UI that interacts with the core library to view, annotate and manipulate PDFs that can be embedded into any web project. This repo is specifically designed for any users interested in advanced customizations. With the source code access, it gives developers full control to customize & style the UI, build custom controls & logic, integrate into workflows, or build a UI from scratch. Any approved pull requests made to this repository are merged into WebViewer's internal builds, and can be accessed through the nightly builds. Any approved pull requests to the master branch will go to WebViewer's nightly experimental builds and pull requests to version number branches will go to that version's nightly stable. -
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ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
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CoreUI
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
CoreUI Admin Panel is not another blend of 3rd parties free components and libraries. It's the only Open Source Bootstrap Admin Dashboard Template built on the enterprise-grade hand-crafted UI Components Library created and backed by professionals. CoreUI and CoreUI PRO are delivered with fully-featured, and ready-to-use admin panel templates for your application. Save thousands of development hours by using ready-made, reusable, and commonly used widgets and UI components. Moreover, CoreUI Bootstrap Admin Template is delivered with a ready-to-use environment, so you don't have to waste time configuring the project. All build scripts and tools are ready to use out of the box. With CoreUI Template you can start a new project in a minute!