Description
Your app needs to find the size or type of an image. This could be for adding width and height attributes to an image tag, for adjusting layouts or overlays to fit an image or any other of dozens of reasons.
But the image is not locally stored – it’s on another asset server, or in the cloud – at Amazon S3 for example.
You don’t want to download the entire image to your app server – it could be many tens of kilobytes, or even megabytes just to get this information. For most common image types (GIF, PNG, BMP etc.), the size of the image is simply stored at the start of the file. For JPEG files it’s a little bit more complex, but even so you do not need to fetch much of the image to find the size.
FastImage does this minimal fetch for image types GIF, JPEG, PNG, TIFF, BMP, ICO, CUR, PSD, SVG and WEBP. And it doesn’t rely on installing external libraries such as RMagick (which relies on ImageMagick or GraphicsMagick) or ImageScience (which relies on FreeImage).
You only need supply the uri, and FastImage will do the rest.
FastImage alternatives and similar gems
Based on the "Web Crawling" category.
Alternatively, view FastImage alternatives based on common mentions on social networks and blogs.
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Wombat
Lightweight Ruby web crawler/scraper with an elegant DSL which extracts structured data from pages. -
MetaInspector
Ruby gem for web scraping purposes. It scrapes a given URL, and returns you its title, meta description, meta keywords, links, images... -
Spidr
A versatile Ruby web spidering library that can spider a site, multiple domains, certain links or infinitely. Spidr is designed to be fast and easy to use. -
LinkThumbnailer
Ruby gem that fetches images and metadata from a given URL. Much like popular social website with link preview. -
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instabot.rb
An instagram bot works without instagram api, only needs your username and password. written in ruby -
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The Hawker Ruby gem
The Hawker gem is a web scraper which allows you to pull the basic information for given social media profile URL -
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Kimurai
DISCONTINUED. Kimurai is a modern web scraping framework written in Ruby which works out of box with Headless Chromium/Firefox, PhantomJS, or simple HTTP requests and allows to scrape and interact with Javascript rendered websites
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