Pennysmalls

When you write your next CarrierWave uploader, consider processing your images with libvips instead of ImageMagick.

Reasons for libvips

There are several **upsi...

DevIL is a fast and lightweight image library that supports the loading and saving of images in almost any graphics format. It also provides some basic image manipulation functionality.

When you need test images, instead of using services like lorempixel or placehold.it you may generate test images yourself.

Here we build a simple SV...

This card shows an uncommon way to retrieve a file using selenium where JavaScript is used to return a binary data array to Ruby code.

The following code example retrieves a PDF but the approach also works for other file types.

require "s...

It's 2024 and we have tools like ffmpeg, imagemagick and GPT readily available. With them, it's easy to convert texts, images, audio and video clips into each other.

For the everyday use without any parameter tweaking I'm using a collection of ti...

FastImage Resize is an extremely light solution for resizing images in ruby by using libgd

Debugging image color profiles is hard. You can't trust your eyes in this matter, as the image rendering depends on multiple factors. At least the operation system, browser or image viewer software and monitor influence the resulting image colors ...

Geoffrey Grosenbach has created Gruff for easily plotting graphs. It is written in pure Ruby and integrates with Rails applications.

It provides features as automatic sizing of dots and lines (the more values, the thinner the graph's elements), c...

Starting with Ruby 1.9, most #each methods can be called without a block, and will return an enumerator. This is what allows you to do things like

['foo', 'bar', 'baz'].each.with_index.collect { |name, index| name * index }
# -> ["", "b...