Open-source alternatives to Angular File Upload

bootstrap-fileinput is a Bootstrap-compatible HTML5 file upload widget and plugin. It provides a customizable interface for selecting and uploading multiple files, featuring integrated image previews, drag-and-drop support, and client-side validation for file types, sizes, and counts. The project includes a resumable file upload client that slices large files into chunks to ensure stability over intermittent connections and allow transfers to be paused and resumed. It also features a client-side image processor capable of resizing images and reading EXIF metadata to automatically correct imag

Vue-uploader is a library designed for managing file and folder transfers within Vue applications. It provides a framework for handling large data transmissions by splitting files into smaller, manageable chunks, which enables reliable uploads with support for pausing, resuming, and error recovery. The library offers a set of component-based abstractions that allow developers to build custom drag-and-drop zones and file selection interfaces. It manages the entire upload lifecycle, including file validation based on custom criteria and the orchestration of concurrent upload queues. Beyond bas

Simple-Ajax-Uploader is a dependency-free JavaScript library designed to handle asynchronous file transfers from the client side to a server. It enables background data transmission, allowing files and associated metadata to be uploaded without requiring a full page reload. The library distinguishes itself through its broad compatibility, providing consistent functionality across both modern web browsers and older environments, including legacy versions of Internet Explorer. It achieves this by utilizing a combination of binary streaming for modern browsers and hidden iframe techniques for ol

Dropzone is a JavaScript library used to create interactive file upload zones with drag-and-drop support. It functions as an HTTP file upload manager that handles network request management and the transmission of files to a server. The library includes a client-side image previewer that generates thumbnails and resizes files within the browser before they are transmitted. It provides a customizable upload interface through a set of themes and event listeners that modify the visual style and behavior of the upload areas. The system manages the end-to-end upload process by tracking real-time

react-dropzone is a React hook and HTML5 drag-and-drop wrapper used to create interactive areas that accept files via drag-and-drop or a native system file picker. It serves as a web file system interface, bridging browser interfaces with the operating system's file selection process. The project distinguishes itself by managing complex event propagation to isolate drop zones and providing global drag-state detection for document-wide visual feedback. It supports both traditional hidden input triggers and the modern browser File System Access API for secure context integration, and it can det

This project is a comprehensive favicon specification guide and browser compatibility matrix. It provides a detailed reference for the image sizes, file formats, and HTML markup required to ensure website icons display correctly across modern and legacy browsers and devices. The resource includes specific technical guides for implementing SVG favicons that use embedded CSS media queries to support system light and dark mode. It also provides a reference for web app manifests and the specific image dimensions needed for installable progressive web applications. The documentation covers broade

Uploadthing is a tool for integrating file uploads into web applications, providing a system to accept and store files through serverless file handling. It manages the end-to-end upload process, from creating backend endpoints to delivering content via a content delivery network. The project utilizes a presigned URL workflow to allow clients to upload files directly to cloud storage, reducing server ingress. It features a route-based validation system to enforce constraints on file types and sizes, alongside middleware for request authorization and secure post-upload callback webhooks. The p

This project is a jQuery-based file upload widget that provides a browser interface for selecting and transferring files to a server. It functions as a chunked file uploader and a resumable upload client, enabling the transfer of large files by splitting them into smaller segments or continuing interrupted uploads from the last successfully sent byte. The tool includes a client-side image processor for validating, resizing, and generating previews of images before transmission. It also serves as a cross-domain upload tool, using various transport mechanisms to send files to different domains

CKEditor 4 is a browser-based WYSIWYG rich text editor that enables users to create and format HTML content directly in the browser. It operates on a plugin-based architecture with a configurable toolbar system, DOM-based content editing, and an event-driven lifecycle, all delivered through a CDN-based distribution model. The editor supports skin-based theming and includes a legacy plugin compatibility layer for backward compatibility. The editor distinguishes itself as a cross-platform framework that integrates natively with Angular, React, Vue, Electron, Android, and iOS environments. It of

vim.wasm is a full port of the Vim editor compiled to WebAssembly that runs entirely in a browser tab. It provides a complete code editing experience with syntax highlighting, text objects, and all standard Vim features, executing natively in the browser through Emscripten compilation. The editor integrates deeply with browser capabilities, including drag-and-drop file opening, system clipboard synchronization for cross-application copy and paste, and IndexedDB-based persistent storage that preserves user configuration and edited files across browser sessions. Files can be loaded from URLs vi

Uploader is a JavaScript library designed for managing reliable, resumable, and concurrent file transfers within web applications. It provides a client-side interface that leverages the browser's native file system capabilities to handle data selection and transmission. The library distinguishes itself by implementing a chunked data handling model, which breaks large files into smaller segments to ensure fault tolerance. This architecture allows for the automatic recovery of transfers following network interruptions or browser restarts, while maintaining state-persistent queues that enable us

This project is a JavaScript UI component library and frontend utility toolkit. It serves as a web modal framework and popup library, providing a specialized system for rendering interactive dialogs, overlays, and layered interfaces over web page content. The library is distinguished by its comprehensive set of overlay tools, including alert dialogs, confirmation prompts, and the ability to embed external content via iframes. It also features a responsive twelve-column grid system for cross-device layout compatibility and an internal modular dependency management system for on-demand loading

Ark is a headless UI component library that delivers accessible, cross-framework primitives with behavior governed by finite state machines. It provides unstyled components that encapsulate logic and accessibility — including full keyboard navigation, focus management, and WAI-ARIA support — while leaving visual styling entirely to the consumer. Components expose scoped data attributes for CSS targeting and use state machines to produce predictable, testable interactive behavior across every state transition. The library distinguishes itself through a state propagation model that distributes

Dropzone is a JavaScript file upload library that provides a browser-based interface for capturing dropped files and transmitting them to a server. It functions as a multipart upload client, splitting large files into smaller chunks to increase transmission reliability and bypass server size limits. The library includes a client-side image processor capable of resizing images and correcting photo orientation in the browser before they are sent to a server. It generates image thumbnails and visual previews immediately after selection, and can render previews for files already hosted on a serve

html5shiv is a JavaScript compatibility polyfill and legacy browser shim that enables the use of HTML5 sectioning elements in outdated versions of Internet Explorer. It provides a compatibility layer that ensures modern HTML5 tags are recognized and rendered correctly by overriding element creation methods. The library ensures that HTML5 sectioning elements contain their child elements in old web engines by applying basic styles. It specifically addresses layout and styling discrepancies for both screen and print media to prevent layout collapse. The project includes a programmable configura

Nerv is an isomorphic JavaScript framework and virtual DOM library used for component-based user interface development. It functions as a React-compatible library that maintains compatibility with the React 16 API. The framework is specifically designed as a legacy browser UI framework, providing the internal logic necessary to maintain consistent behavior in older environments, including Internet Explorer 8. Its capabilities cover isomorphic web rendering through server-side HTML generation and client-side hydration. The library also includes frontend error handling to intercept component c

FileBrowser is an open-source, self-hosted file management interface that runs as a single binary with no external dependencies. It provides a web-based interface for browsing, uploading, editing, and sharing files on a remote server, with a core architecture built on JWT-based stateless authentication and a rule-based path permission engine that controls access at the directory level. The project distinguishes itself through a comprehensive access control system that supports multi-provider authentication including OIDC, LDAP, external JWT, and two-factor authentication, alongside granular p

Respond is a legacy browser compatibility layer and adaptive asset delivery tool. It functions as a CSS3 media query polyfill and responsive image loader, providing the necessary mechanisms to emulate modern responsive design features in outdated web browsers. The project differentiates itself by combining stylesheet parsing with dynamic style application to emulate minimum and maximum width media queries. It employs a system for selecting and serving the most appropriate image sources based on viewport width, aspect ratio, and resolution. The tool covers broad capability areas including res

Clean-CSS is a Node.js CSS optimizer and minifier designed to reduce stylesheet file sizes and improve web performance. It functions as a CSS post-processor that removes unnecessary whitespace, comments, and redundant properties from stylesheets. The project utilizes an abstract syntax tree for parsing and a multi-pass optimization pipeline to restructure rules and simplify properties. It features a plugin interface for custom style transformations and provides compatibility-aware minification to ensure styles remain functional across specific legacy browser versions. Additional capabilities

jPlayer is a JavaScript library and cross-browser media wrapper used for embedding and managing HTML5 audio and video content. It provides a unified interface to control media playback across different web browsers and formats. The project functions as a customizable media interface, allowing the creation of tailored playback layouts using standard HTML and CSS. It decouples playback logic from the visual user interface to enable custom styling of player controls. The library handles cross-browser compatibility through a playback engine with fallback options for older browsers. It integrates

This project is a jQuery plugin and suite of browser-based tools designed for asynchronous form submission, data serialization, and client-side input management. It functions as a client-side form manager that allows the transmission of form data and files to a server in the background without triggering page reloads. The library provides specialized utilities for converting form field values into URL-encoded strings for network transmission and intercepting submissions to execute custom logic or cancel the process via callbacks. It also includes capabilities for monitoring the real-time prog

Flexibility is a JavaScript library and layout engine designed to polyfill CSS Flexbox capabilities. It ensures consistent element alignment and distribution across different browser versions, specifically targeting legacy environments that lack native support for the flexible box specification. The project provides cross-browser layout compatibility by simulating flexible container behavior. It manages dynamic flexbox properties to maintain a stable and predictable user interface regardless of the visitor's browser version. The system covers DOM traversal, manual coordinate calculation, and

This project is a browser API compatibility guide and replacement library designed to help migrate legacy codebases from jQuery to native browser APIs. It serves as a reference guide for finding vanilla JavaScript alternatives to common library methods. The resource focuses on vanilla JavaScript migration to reduce dependency overhead and improve page load times. It provides a mapping of library-specific functions to standard JavaScript methods to support frontend performance optimization and modern web development. The guide covers DOM manipulation, event handling, and the implementation of

Babel is a pluggable JavaScript compiler and transpiler that converts modern ECMAScript syntax into backwards-compatible versions of the language. It functions as an abstract syntax tree manipulator, parsing source code into a hierarchical structure to traverse and modify nodes for custom code transformations. The system utilizes a plugin-driven architecture to apply specific transformation rules and supports presets that bundle multiple plugins into named configuration groups. This enables the transformation of experimental syntax and the injection of non-global polyfills to ensure consisten

Dramatiq is a distributed task queue and workload manager used to offload function execution to background workers. It functions as an asynchronous task orchestrator that enables the distribution of computational tasks across a cluster using a pluggable transport layer supporting RabbitMQ and Redis. The framework provides specialized tools for complex task orchestration, including the ability to link background jobs into sequences, pipelines, and barriers. It further manages distributed concurrency through the use of shared mutexes, rate limiters, and exponential backoff retries to prevent re

Active Storage Validations is a library for Ruby on Rails that provides model-level validation helpers for file attachments. It integrates directly into the standard validation lifecycle to ensure that uploaded content conforms to defined business requirements before it is persisted to storage. The framework enforces constraints on file size, content type, dimensions, and the number of attachments. It includes security mechanisms to detect and block content-type spoofing by inspecting the binary signature of files to verify that their actual format matches the declared extension. Beyond basi