Open-source alternatives to TOCropViewController

Cropper.js is a JavaScript image cropping library and client-side image editor. It provides a front-end interface for manipulating image geometry and extracting specific regions using the HTML5 Canvas API. The library enables interactive image cropping where users can manually select areas and define clipping regions. It supports geometry transformations including rotation, scaling, and zooming to align subjects, and allows for the enforcement of dynamic aspect ratios. The tool provides capabilities for exporting crop data as coordinates or canvas representations and offers access to interna

SmartCropper is a computer vision library and user interface component designed for automated document border identification and perspective-based image cropping. It provides a framework for detecting the edges of items such as ID cards and business cards to suggest crop boundaries and apply geometric transformations that flatten skewed images into front-facing views. The project features an interactive document scanner interface that allows for manual crop area adjustment. This is achieved through draggable anchor points and a magnifying glass tool for high-precision pixel alignment. The li

This is a custom Android view designed for rendering high-resolution images using subsampling and tiling to prevent memory overflows. It serves as an interactive image component that supports pinch-to-zoom, panning, and double-tap animations. The project is distinguished by its rendering engine, which loads low-resolution previews and high-resolution tiles to enable the efficient navigation of massive image files. It includes a coordinate mapper that converts screen touch points into raw image pixel coordinates and vice versa during scaling and panning. The view provides a broad set of capab

Bild is an image processing library implemented in the Go programming language. It provides a collection of algorithmic engines for image manipulation, including a convolution kernel engine for filtering, an image blending tool for layer composition, and a procedural noise generator for creating synthetic textures. The project is distinguished by its procedural generation capabilities, implementing Perlin, Gaussian, binary, and uniform noise algorithms to produce random pixel distributions and organic patterns. It also features a command-line interface that allows users to apply visual effect

Imaginary is a self-hosted HTTP server for image processing that applies transformations like resizing, cropping, rotating, and format conversion through URL parameters. It operates as a stateless request-response pipeline, processing images fetched from remote URLs or served from a local directory without requiring client-side dependencies. The server distinguishes itself through its security and access control capabilities, offering optional API key validation, HMAC-signed URL verification, and remote origin whitelisting to restrict which image sources are permitted. It also provides a heal

Zag is a headless UI state machine library that provides unstyled component logic to ensure consistent behavior across different rendering engines. It functions as a toolkit for modeling complex user interface interactions using statecharts, decoupling the underlying logic and accessibility attributes from visual styling. The library is framework-agnostic, utilizing specialized adapters to bridge its state machine logic with various JavaScript libraries such as React, Solid, Vue, and Svelte. This approach allows developers to maintain a single interaction model while applying any CSS or styli

Async GIF image decoder and Image viewer supporting play GIF images. It just use very less memory.

An implementation of High Pass Skin Smoothing using Apple's Core Image Framework

JTSImageViewController

A library that displays spherical or cylindrical panoramas with touch or motion based controls.

iOS camera engine with Vine-like tap to record, animatable filters, slow motion, segments editing

Image framework for iOS to display/encode/decode animated WebP, APNG, GIF, and more.

A smart and easy-to-use image masking and cutout SDK for mobile apps.

A photo gallery for iOS with a modern feature set. Similar features as the Facebook photo browser.

A Flutter package for manipulating bitmaps

Render After Effects animations natively on Flutter. This package is a pure Dart implementation of a Lottie player.

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GPUImage is a GPU-accelerated image processing framework for iOS designed to apply real-time filters and effects to images and video. It functions as a processing engine and fragment shader library that manages textures and shaders for efficient visual data manipulation. The framework utilizes a chainable filter architecture and a texture-based data pipeline to pass image data between processing stages without expensive memory transfers. It enables the creation of bespoke visual effects through the authoring of custom fragment shaders and provides mechanisms to synchronize texture data with e

A Flutter widget that paints an image and moves it at a slower speed than the main scrolling content.

YPImagePicker is a set of integrated iOS components for capturing new media, browsing device galleries, and performing visual edits or filtering. It provides a built-in camera interface for photos and videos, a media selection library for picking multiple assets from the device gallery, and tools for editing media. The library includes a media editor for cropping images and trimming video durations, as well as a filter tool for modifying the visual appearance of images before they are finalized. The project covers media capture, gallery selection, and image processing. These capabilities inc

Koloda is an iOS gesture interaction library and SwiftUI view component used to create swipeable card interfaces. It provides a stack-based view component that manages overlapping views, ensuring only the top-most element remains actively interactive. The library allows for the customization of card appearance, including the configuration of overlays and animations that dictate how background cards move during a swipe. It manages drag behavior and swipe directions, triggering specific logic when cards are swiped, tapped, or fully exhausted. The component covers the implementation of gesture-

Jcrop is a JavaScript image cropping library that provides a browser-based interface for users to interactively select and define rectangular regions of an image. It utilizes a DOM-based image overlay to wrap images in relative containers, allowing for the placement of adjustable selection handles and boundary constraints. The tool distinguishes itself through comprehensive input support, translating touch gestures and keyboard intercepts into precise coordinate updates for both mobile and desktop environments. It features an engine capable of enforcing custom aspect ratio constraints and cal

This project provides a React component and a set of utilities for implementing interactive image cropping. It enables users to define selection areas over media elements using a draggable and resizable interface. The library supports fixed aspect ratio locking and the definition of custom crop shapes, such as circles. It utilizes a percentage-based coordinate system to ensure the selection interface remains responsive across different screen sizes and layouts. The toolset includes capabilities for real-time crop previewing and the generation of cropped regions using canvas-based rendering.

Viewerjs is a JavaScript image viewer library and frontend media display tool. It functions as an image gallery component and web-based manipulator for rendering images within browser interfaces. The library enables interactive image inspection through zooming, panning, rotating, and flipping operations. It supports both full-screen modal overlays and embedded inline page rendering to accommodate different display requirements. The project includes systems for gallery navigation, such as automated slideshows and index-based selection. It provides interface controls for keyboard-driven naviga

This project is a C++ library and hardware driver designed to control Hub75 RGB LED panels using the GPIO pins of a Raspberry Pi. It functions as both a low-level panel controller and a graphics library for rendering visual content on low-resolution LED grids. The system distinguishes itself through a comprehensive set of hardware configuration tools, including custom pixel mapping, rotation, and mirroring to match physical display geometries. It supports multi-display chaining in both parallel and series configurations and provides a Python binding to expose the core C++ logic for hardware a

Side-Menu.Android is a reusable UI component for Android applications that provides a slide-out navigation drawer. It is designed to help developers organize application sections and user options into a structured, hidden panel that maintains a clean interface for the primary content area. The component distinguishes itself through its visual presentation, which follows Material Design guidelines to ensure a consistent and intuitive user experience. It features a data-driven menu hierarchy that allows for logical grouping of navigation items, and it incorporates fluid circular reveal animatio