Extracting / Exporting custom emoji from Slack

README.MD

Extracting Emoji From Slack!

Slack doesn't provide an easy way to extract custom emoji from a team. (Especially teams with thousands of custom emoji) This Gist walks you through a relatively simple approach to get your emoji out.

If you're an admin of your own team, you can get the list of emoji directly using this API: https://api.slack.com/methods/emoji.list. Once you have it, skip to Step 3

HOWEVER! This gist is intended for people who don't have admin access, nor access tokens for using that list.

Follow along...

Step 1

Open your Slack team on your browser (I used FireFox in this example)

Next, Open your developer tools, and go to the network tab. Look for a POST request on /emoji.list

Step 2

Right Click on the request, and choose to open it in a new tab.

This will cause the browser to replay the request, yielding a JSON file with all your emoji information.

Save this file somewhere as emoji.json

Step 3

Run download.sh on the file. (Make sure you chmod +x it to make it executable. Details on the download.sh file.

./download.sh emoji.json

Sit back and wait. This will create a folder called output and will save all your emoji to it.

Optional Step 4

To bulk upload your emoji into a new team, use this chrome extension: https://chrome.google.com/webstore/detail/neutral-face-emoji-tools/anchoacphlfbdomdlomnbbfhcmcdmjej

Notes

1- This downloads files sequentially, one at a time. I didn't want to incurr Slack's rage by hammering their edge server with concurrent downloads. 2- This will duplicate aliased emoji

download.sh

#!/usr/bin/env bash
######
## UPDATE for 2019: I completely changed my approach on how to obtain the emoji dump.
## The new approach results in a JSON file, so the processing is a bit diferent than
## with the previous version.  This version will also take care of aliased emoji.

# Use:
# Make this file executable, and feed it the results from the Slack emoji URL dump. Files will be downloaded to `output`
# 	chmod +x download.sh
# 	./download.sh emoji.json




# Input File
INPUT="$1"

# Create output directory where downloaded emoji will be stored
mkdir -p output;


# Clean Up Source File:
# Break up the file into individual lines for processing (Comma and { to NewLine)
# Slack's emoji JSON brings an unwanted escape character "\". We need to remove it.
# We'll also remove unwanted quote marks `"` and curly braces "{"  "}"

RAW_LIST=$(cat "${INPUT}" | tr ",{" "\\n" | sed -E 's/[\\"{}]//g')

# Separate into Custom Emoji (Ignoring slack's default ones) and Aliases

# Filter for custom emoji (ie: Anything on emoji.slack-edge.com), and remove the ":" separator
EMOJI_LIST=$( echo "${RAW_LIST}" | grep "https://emoji.slack-edge.com" | sed 's/:https/ https/')

# Filter for the aliases, and remove the separator
ALIAS_LIST=$( echo "${RAW_LIST}" | grep ":alias:" | sed 's/:alias:/ /' )


# First download all the emoji
echo "${EMOJI_LIST}" |
while read -r line || [[ -n "$line" ]]; do
	parts=($line)
	url=${parts[1]}
	name=${parts[0]}
	extension=${url##*.}

	echo "Downloading ${name}.${extension}"
	curl -s -o "output/${name}.${extension}" "${url}"

done;

# Now duplicate all the aliases
echo "${ALIAS_LIST}" |
while read -r line || [[ -n "$line" ]]; do
	parts=($line)
	alias=${parts[0]}
	source=${parts[1]}


	target=$(echo "${EMOJI_LIST}" | grep "${source} ")
	extension=${target##*.}


	echo "Looking for source of ${alias} in ${source} -> ${target}"
	echo "copying output/${source}.${extension} to output/${alias}.${extension}"
	cp "output/${source}.${extension}" "output/${alias}.${extension}"

done;

Been pondering this problem a bit more and have since found an even easier way. It relies on Slack Connect and using EmojiBox.

Slack connect lets you instantly add emojis from one workspace to another by right clicking them.

Steps go like this.
Step 1: Create a slack connect channel between the 2 workspaces
Step 2: Invite yourself to the channel in the second workspace.
Step 3: Accept the invite
Step 4: Install EmojiBox in the app store if you haven’t already and add @EmojiBox from the old workspace to the slack connect channel.
Step 5: Type “@EmojiBox show all” (and hold onto something cause this logs out all your emojis)
Step 6: Right click any emoji you want in your new workspace and they’ll be instantly added.
Step 7: Archive the slack connect channel once your done.

🔥