simple script to backup emojis in slack

README.md

How to use this

1. In Slack, click on Tools -> Customize Workspace
2. Open up your network tab and filter for emoji.admin
3. Scroll the full list
4. Open up the response from each emoji.admin JSON request that was made and copy it to a page-*.json file
5. In a terminal, run slack-emoji-download.sh page-1.json to download every emoji listed in that page to an output directory.
6. Continue until you have every emoji donwloaded.

slack-emoji-download.sh

#!/usr/bin/env bash

# Script to download emojis from a JSON file
# Usage: ./download.sh page-1.json

# Check if jq is installed
if ! command -v jq &> /dev/null; then
    echo "Error: jq is required but not installed. Please install jq first."
    echo "On macOS: brew install jq"
    echo "On Ubuntu/Debian: sudo apt-get install jq"
    exit 1
fi

# Check if input file is provided
if [ -z "$1" ]; then
    echo "Usage: $0 <json-file>"
    exit 1
fi

INPUT="$1"

# Check if input file exists
if [ ! -f "$INPUT" ]; then
    echo "Error: File '$INPUT' not found"
    exit 1
fi

# Create output directory
mkdir -p output

# Counter for progress
total=$(jq '.emoji | length' "$INPUT")
current=0

echo "Found $total emojis to download"
echo ""

# Process each emoji in the JSON file
jq -r '.emoji[] | "\(.name)|\(.url)"' "$INPUT" | while IFS='|' read -r name url; do
    current=$((current + 1))

    # Skip if name or url is empty
    if [ -z "$name" ] || [ -z "$url" ]; then
        continue
    fi

    # Extract file extension from URL
    extension="${url##*.}"
    extension="${extension%%\?*}"  # Remove query parameters if any

    # Default to .png if no extension found
    if [ -z "$extension" ] || [ "$extension" = "$url" ]; then
        extension="png"
    fi

    # Create filename
    filename="output/${name}.${extension}"

    # Download the file
    echo "[$current/$total] Downloading: $name"
    if curl -s -f -o "$filename" "$url"; then
        echo "  ✓ Saved to: $filename"
    else
        echo "  ✗ Failed to download: $name"
    fi
done

echo ""
echo "Download complete!"