JPNG - JPNG is a bespoke image file format that combines the compression benefits of JPEG with the alpha channel support of a PNG file

•    Objective-C

---

In iOS and Mac OS apps there is typically a choice of two image formats: PNG format allows transparency but produces large image files and is unsuited to compressing images like photographs; JPEG is great for creating small files and provides a range of compression qualities to suit the subject matter, but doesn't allow for transparency. JPNG is a new image format that combines the best of both of the other formats. JPNG is not really a format in its own right, it's a simple file wrapper that combines a JPEG and PNG image within the same file. JPEG is used to efficiently compress the RGB portion of the image and PNG is used to store the alpha channel.

Compressor - An android image compression library.

•    Java

---

An android image compression library.

compressor photos android android-library compression image-compression compress-images

ios-twitter-image-pipeline - Twitter Image Pipeline is a robust and performant image loading and caching framework for iOS clients

•    Objective-C

---

The Twitter Image Pipeline is a streamlined framework for fetching and storing images in an application. The high level concept is that all requests to fetch or store an image go through an image pipeline which encapsulates the work of checking the in memory caches and an on disk cache before retrieving the image from over the network as well as keeping the caches both up to date and pruned.Twitter Image Pipeline came to fruition as numerous needs rose out of Twitter for iOS use cases. The system for image loading prior to TIP was fragile and inefficient with some severe edge cases. Designing a new framework from the ground up to holistically approach the need for loading images was the best route and led to TIP.

Flyimg - Microservice to resize and crop images on the fly

•    PHP

---

Image resizing, cropping and compression on the fly with the impressive MozJPEG compression algorithm. One Docker container to build your own Cloudinary-like service.You pass the image URL and a set of keys with options, like size or compression. Flyimg will fetch the image, convert it, store it, cache it and serve it. The next time the request comes, it will serve the cached version.

image image-processing resize-images crop-image docker jpeg png webp gif compression-algorithm flysystem microservice mozjpeg imagemagick compression crop face-detection image-api image-service

react-native-image-picker - A React Native module that allows you to use native UI to select media from the device library or directly from the camera

•    Java

---

This library started as a basic bridge of the native iOS image picker, and I want to keep it that way. As such, functionality beyond what the native UIImagePickerController supports will not be supported here. Multiple image selection, more control over the crop tool, and landscape support are things missing from the native iOS functionality - not issues with my library. If you need these things, react-native-image-crop-picker might be a better choice for you. IMPORTANT NOTE: You'll still need to perform step 4 for iOS and steps 2 and 5 for Android of the manual instructions below.

react-native react-native-image-picker react native image picker

Crunch - Insane(ly slow but wicked good) PNG image optimization

•    Python

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Crunch is a tool for lossy PNG image file optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using the pngquant and zopflipng PNG optimization tools. This approach leads to a significant file size gain relative to lossless approaches at the expense of a relatively modest decrease in image quality (see example images below). Historical benchmarks with the files included in Cédric Louvrier's PNG Test Corpus versus other commonly used PNG optimization software are available in BENCHMARKS.md.

png png-compression compression image-quality image-processing images image image-compression pngquant zopflipng lossy lossy-compression

react-native-image-picker - :sunrise_over_mountains: A React Native module that allows you to use native UI to select media from the device library or directly from the camera

•    Java

---

This library started as a basic bridge of the native iOS image picker, and I want to keep it that way. As such, functionality beyond what the native UIImagePickerController supports will not be supported here. Multiple image selection, more control over the crop tool, and landscape support are things missing from the native iOS functionality - not issues with my library. If you need these things, react-native-image-crop-picker might be a better choice for you. To use this library you need to ensure you match up with the correct version of React Native you are using.

react-native image-picker picker react-native-image-picker react native image

Agrume - A lemony fresh iOS image viewer written in Swift.

•    Swift

---

An iOS image viewer written in Swift with support for multiple images. There are multiple ways you can use the image viewer (and the included Example project shows them all).

image image-viewer ios cocoapods swift-4 carthage

react-native-image-gallery - Pure JavaScript image gallery component for iOS and Android with high-performance and native feeling in mind

•    Javascript

---

A pure JavaScript image gallery component for React Native apps with common gestures like pan, pinch and doubleTap, supporting both iOS and Android. This component utilizes @ldn0x7dc/react-native-view-pager as the scrollable container and react-native-transformable-image as the wrapped image.

react react-native gallery images component archriss android ios

Image viewer cum editor

•    

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This is a project on image viewing and editing. The project have following features VIEWER: Album Password security for albums Inbuilt Browser Mailing system Basic image display options like slide show etc Editor: Various types of filter Image Compression. Stenography.

album color-filters image image-compression image-editing image-processing image-resizer

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

•    Swift

---

A smart and easy-to-use image masking and cutout SDK for mobile apps. TinyCrayon SDK provides tools for adding image cutout and layer mask capabilities to your mobile applications.

image-processing ios-sdk mask-image cutout image-mask

react-native-image-crop-picker - iOS/Android image picker with support for camera, configurable compression, multiple images and cropping

•    Objective-C

---

Android: The prop 'cropping' has been known to cause videos not to be display in the gallery on Android. Please do not set cropping to true when selecting videos.Module is creating tmp images which are going to be cleaned up automatically somewhere in the future. If you want to force cleanup, you can use clean to clean all tmp files, or cleanSingle(path) to clean single tmp file.

react react-native image video crop ios android cropping native picker multiple camera

php-image-cache - Image Cache is a very simple PHP class that accepts an image source and will compress and cache the file, move it to a new directory, and returns the new source for the image

•    PHP

---

Image Cache is a very simple PHP class that accepts an image source and will compress and cache the file, move it to a new directory, and returns the new source for the image. Employing travis-ci.org for continuous integration testing and assurance of code validity.

GPUImage - An open source iOS framework for GPU-based image and video processing

•    Objective-C

---

The GPUImage framework is a BSD-licensed iOS library that lets you apply GPU-accelerated filters and other effects to images, live camera video, and movies. In comparison to Core Image (part of iOS 5.0), GPUImage allows you to write your own custom filters, supports deployment to iOS 4.0, and has a simpler interface. However, it currently lacks some of the more advanced features of Core Image, such as facial detection. For massively parallel operations like processing images or live video frames, GPUs have some significant performance advantages over CPUs. On an iPhone 4, a simple image filter can be over 100 times faster to perform on the GPU than an equivalent CPU-based filter.

buffer-ios-image-viewer - The BFRImageViewer is a turnkey solution to present images within your iOS app 🎉!

•    Objective-C

---

It features swipe gestures to dismiss, automatic image scaling, zooming and panning, supports multiple images, image types, URL backloading, custom view controller transitions, built in parallax effect, live photos and plays nicely with 3D touch! We use it all over the place in Buffer for iOS :-). We've got code samples of each feature in the demo app, feel free to take a peek 👀.

ios image-viewer 3d-touch

spectrum - A client-side image transcoding library.

•    C++

---

Spectrum is a cross-platform image transcoding library that can easily be integrated into an Android or iOS project to efficiently perform common image operations. The Spectrum APIs incorporate declarative traits. This simplifies the usage for the developer by focusing on the desired outcome. At the same time it enables Spectrum to transparently choose the best execution sequence. Additionally, Spectrum makes common image operations simple by surfacing many difficult operations that are not typically exposed by platform frameworks. For example, some JPEG-to-JPEG operations like cropping are executed lossless, and disabling chroma sub-sampling when saving graphical JPEGs will lead to better quality final products.

android ios image-processing transcoding images

ios-imagefile-megapixel - Fixes iOS6 Safari's image file rendering issue for large size image (over mega-pixel), which causes unexpected subsampling when drawing it in canvas

•    Javascript

---

Fixes iOS6 Safari's image file rendering issue for large size image (over mega-pixel), which causes unexpected subsampling when drawing it in canvas. By using this library, you can safely render the image with proper stretching. Although it mainly focuses fixing iOS Safari related issues, it can be safely used in the envionments other than iOS6.

ImgBot - An Azure Function solution to crawl through all of your image files in GitHub and losslessly compress them

•    CSharp

---

ImgBot crawls all your image files in GitHub and submits pull requests after applying a lossless compression. This will make the file size go down, but leave the dimensions and quality just as good. ImgBot supports optional configuration through a .imgbotconfig json file. This is not a required step to using ImgBot and is only for more advanced scenarios. This file should be placed in the root of the repository and set to your liking.

github-integration azure-functions dotnet-core azure image-compression imagemagick code-quality github-app help-wanted

FastImageCache - iOS library for quickly displaying images while scrolling

•    Objective-C

---

Fast Image Cache is an efficient, persistent, and—above all—fast way to store and retrieve images in your iOS application. Part of any good iOS application's user experience is fast, smooth scrolling, and Fast Image Cache helps make this easier. A significant burden on performance for graphics-rich applications like Path is image loading. The traditional method of loading individual images from disk is just too slow, especially while scrolling. Fast Image Cache was created specifically to solve this problem.

ShadowImageView - A apple music cover picture shadow style image library

•    Swift

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ShadowImageView is a iOS 10 Apple Music style image view, help you create elegent image with shadow. Create a Cartfile that lists the framework and run carthage update. Follow the instructions to add $(SRCROOT)/Carthage/Build/iOS/YourLibrary.framework to an iOS project.

shadow image ui