DeveloperHub.io

DeveloperHub is a documentation API to manage your resources programmatically. With this, you can create hosted documentation portals for product and API docs  

labstack

It is an image & video API converter that convert webpage to an image (screenshot) and PDF labstack is an online API converter that provides fast, reliable and highly configurable screenshot as a service  

ConvertAPI

ConvertAPI is a comprehensive & powerful cloud API to convert files with hundreds of formats supported. Use the API to easily convert documents, images, audio, video, CAD, email and more. It has comprehensive documentation to get you started in minutes and a support team staffed by software developers.  

HTML 2 PDF Rocket

HTML 2 PDF Rocket API is a fast, easy to use web service that helps you to convert an HTML webpage into an image or PDF file. Further, this API has comprehensive documentation to get you started in minutes and a support team staffed by software developers.  

Essential Objects

Essential Objects is a URL to PDF converter API that helps you to convert any URL or webpage to PDF file. In addition, to convert it to a file, it can also convert it to any .NET Stream object.  

ActivePDF

ActivePDF is a successful PDF API provider that easily convert web content to PDF, PDF/A, and PDF/X format. This API provides ease of navigation within the PDF while creating a more natural web-style viewing experience to access targeted content.  

PDFShift

PDFShift is a high-quality, high-fidelity and powerful HTML to PDF conversion API. What it exactly does is it will automatically detect if it’s a URL and load it, or an HTML document and charge it to PDF format.  

Image Compressors (API)

Image Compressors is a free API which is used to optimize your images so that they are loaded faster on the Web. Moreover, it supports different image type such as JPEG/JPG, BMP, GIF, PNG. Besides, it empowers you to specify the URL instead of file as well.

Aspose.Total for Java

Aspose.Total for Java is a collection of file format APIs made for Java developers, enabling them to edit, convert, print, render and create from a wide range of popular document formats from within any Java J2SE, J2EE, J2ME applications. Manipulate Word, Excel, PDF, PowerPoint, Outlook, 3D, CAD and more than 100 other file formats from …

MediaCrush

MediaCrush makes sharing media super-fast by reducing the file size, without sacrificing quality. The API losslessly compresses audios, videos, and images. They can also get 1000-3000% faster for some files!  

Coderanch

Coderanch provides a common API to compress the images of PNG format. It provides a common API to read & write image data for PNG formats. This API compresses image size and improve site performance.  

NPM

NPM is actively developed & maintained for gulp-tinypng-compress. It is a tinyPNG API wrapper for compressing PNG & JPG images.  

Kraken.io

Kraken.io is an image optimization & compression API. It supports JPEG, PNG, GIF (including animated GIFs) and SVG images. You can optimize your images in two ways – by providing a URL of the image you want to optimize or by uploading an image file directly to Kraken.io API.  

reSmush.it

reSmush.it provides a FREE optimization of pictures, for the most standard filetypes (PNG, JPG, GIF, BMP, and TIF). Further, it allows reductions until 80% by using different algorithms like PNGQuant, JPEGOptim, and OptiPNG.  

ImageOptim

ImageOptim API is a web service for image compression that helps you to easily resize and optimize images on your server. Further, this API can generate images specifically tuned for high-DPI screens and “compressive” images.  

Imagify

Imagify API helps you to automatically optimize and compress images. With lighter images, you will gain in speed, user experience and even in SEO. Besides this, it also allows you to restore your media in their original versions when you need to.  

CheetahO

CheetahO is a simple but powerful image optimizer and compression tool helps you to speeds up the website. It’s simple, reliable and awesome. With it, you can choose lossless or lossy image optimization, whichever option works best for your site.