Bookmarklets & ImageMagick @ Toronto Web Performance Meetup
March 19, 2015
EventMobi hosted us.
A Performance Bookmarklet by @micmro
slides and code
Check these out:
other neat bits
- there are browser APIs for getting timing info about page loads
- there is a http header for getting timing info in cross-domain requests
- opening Chrome Dev tools can impact performance testing – for example slower load times due to downloading source maps
- image caching images probably impacts results that these bookmarklets report, so be aware of whether caching is happening or not when looking at results
How to use ImageMagick by @newtron
- using responsive images well means generating lots of different sized images source art
- ImageMagick is a command line tool available on many web servers that can help with resizing images, but it is horrible at optimizing images out of the box
- Dave spent a ton of time testing out different compression & optimization settings to find the best balance
- Dave integrated his findings into grunt-respimg, a Grunt task you can integrate in your build system
Check out this Meetup →
Written by Adam Sullovey, powered by Gatsby.
Find me on codepen, github, or at Toronto meetups.
tags: meetup, web development, web performance