Alvaro Pareja-Lecaros SidIcarus

How to super optimize a favicon

⚠️ This article is outdated: For some reason the ImageMagick convert CLI no longer generates smaller .ico files when the source .png files have been optimized. After a few hours investigating I can’t workout why, or even with what versions everything worked. Here is a related StackOverflow question.

Learn how to manually create optimized website favicon.ico files as much as 60%+ smaller in file size without sacrificing content or quality.

This is something very few people seem to do, probably because no single tool exists. A pity since a favicon.ico file in the website root (still best practice) is one of the few things guaranteed to be downloaded by every first-time visitor. The smaller it is, the sooner it can appear.

The savings can be particularly juicy for icons containing multiple sizes, which is also best practice given the variety of ways favicons are used.

XDebug

A PHP extension that allows you to:

walk through your code by Remote Debugging
find bottlenecks in your application by Profiling
find Code Coverage in a single request
trace your application by logging all function calls

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

	// Tracking cursor position in real-time without JavaScript
	// Demo: https://twitter.com/davywtf/status/1124146339259002881

	package main

	import (
	"fmt"
	"net/http"
	"strings"
	)

	import csv
	import io
	import tempfile
	import zipfile

	import boto3
	import yaml
	from botocore.exceptions import ClientError

	BUCKET = COST ALLOCATION REPORT BUCKET

	#!/usr/bin/env bash
	# Time-stamp: <2017-04-27 09:57:21 kmodi>
	# Time-stamp: <2018-03-20 12:58:02 bobpaul>
	# derived from kmodi's gist: https://gist.github.com/kaushalmodi/74e9875d5ab0a2bc1010447f1bee5d0a
	#
	# Example of using getopt to parse command line options
	# http://stackoverflow.com/a/29754866/1219634 Limitation: All the options
	# starting with - have to be listed in --options/--longoptions, else getopt will
	# error out.
	# The downside is that if you intend to use this as a wrapper to some other program,

	# Turn on Notifications
	do shell script "defaults -currentHost write com.apple.notificationcenterui doNotDisturb -bool FALSE; defaults -currentHost delete com.apple.notificationcenterui doNotDisturbDate; osascript -e 'quit application \"NotificationCenter\" ' && killall usernoted" -- this set 'Do not disturb' to false in the pref

	# Show Desktop
	do shell script "defaults write com.apple.finder CreateDesktop -bool true; killall Finder"

	# Show all windows
	tell application "System Events"
	set visible of (every process) to true
	end tell

	#!/bin/sh
	#
	# Copyright 2017-2025 Martin Goellnitz
	#
	# This program is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,

	#!/bin/bash

	# Check if command was ran as root.
	if [[ $(id -u) -eq 0 ]]; then
	echo "The command \"sphp\" should not be executed as root or via sudo directly."
	echo "When a service requires root access, you will be prompted for a password as needed."
	exit 1
	fi

	# Usage