How to Get a Base64 Version of a File From Command Line
A while back I wrote an article on how to Convert Image to Data URI with JavaScript. It's a neat trick developers can use for any number of reasons. Instead of abusing canvas, however, why not simply get the base64 data from command line?
You can use base64 and pbcopy to convert a file to base64 and copy it to the clipboard:
# base64 gets data, pbcopy copies to clipboard
base64 -i logo.jpeg | pbcopy
Once you have the file data copied in base64 format, the URL format to use the data is:
# data:{mime-type};base64,{data}
data:image/jpeg;base64,/9j/4AAQSkZJRgAB......
While base64 data and data URIs do look cryptic, they're useful to avoid making requests to other files. I use them when creating presentations or when I can't count on a decent internet connection.
![CSS vs. JS Animation: Which is Faster?]()
How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps?
This article serves as a point-by-point...
![Detect DOM Node Insertions with JavaScript and CSS Animations]()
I work with an awesome cast of developers at Mozilla, and one of them in Daniel Buchner. Daniel's shared with me an awesome strategy for detecting when nodes have been injected into a parent node without using the deprecated DOM Events API.
![JavaScript Copy to Clipboard]()
"Copy to clipboard" functionality is something we all use dozens of times daily but the client side API around it has always been lacking; some older APIs and browser implementations required a scary "are you sure?"-style dialog before the content would be copied to clipboard -- not great for...
![Growl-Style Notifications Using MooTools Roar]()
When I think of premier MooTools plugin developers, Harald "digitarald" Kirschner is usually one of the first people that come to mind. Harald has built some of MooTools' most popular plugins, including AutoCompleter, FancyUpload, and History Manager. My favorite plugin created...
