Download all slack custom emojis.

gistfile1.txt

#!/bin/bash
# This script retrieves the full list of custom Slack emoji and downloads them locally.
# Prerequisites: curl and jq

# --- Configuration: update these variables ---
WORKSPACE="something.slack.com"

# Replace with your token, look at the request headers from your browser
TOKEN="xoxc-something-something-etc"
# Replace YOUR_SLACK_COOKIE_HERE with your actual cookie string from your browser session.
COOKIE="YOUR_SLACK_COOKIE_HERE"

# --- Setup export folder ---
EXPORT_DIR="slack_emoji_export"
mkdir -p "$EXPORT_DIR"

# File to store all emoji entries (one JSON object per line)
ALL_EMOJI_FILE="$EXPORT_DIR/all_emojis.jsonl"
> "$ALL_EMOJI_FILE"

# --- Fetch all pages of emoji ---
page=1
while true; do
  echo "Fetching page $page..."
  
  RESPONSE=$(curl -s \
    -H "Cookie: $COOKIE" \
    -F "token=$TOKEN" \
    -F "page=$page" \
    -F "count=100" \
    -F "sort_by=name" \
    -F "sort_dir=asc" \
    -F "_x_reason=customize-emoji-next-page" \
    -F "_x_mode=online" \
    "https://$WORKSPACE/api/emoji.adminList")
  
  # Check if the response is valid
  ok=$(echo "$RESPONSE" | jq -r '.ok')
  if [ "$ok" != "true" ]; then
    echo "Error fetching page $page. Response:"
    echo "$RESPONSE"
    exit 1
  fi
  
  # Save this page’s JSON for reference
  echo "$RESPONSE" > "$EXPORT_DIR/emoji_page_$page.json"
  
  # Append each emoji entry (one per line) to our aggregate file
  echo "$RESPONSE" | jq -c '.emoji[]' >> "$ALL_EMOJI_FILE"
  
  # Check pagination details
  current_page=$(echo "$RESPONSE" | jq -r '.paging.page')
  total_pages=$(echo "$RESPONSE" | jq -r '.paging.pages')
  
  if [ "$current_page" -ge "$total_pages" ]; then
    echo "Reached the last page ($current_page of $total_pages)."
    break
  fi
  
  page=$((page + 1))
done

echo "Finished fetching emoji list. Now starting download of individual emoji images..."

# --- Download each emoji image ---
downloaded=0
failed=0
while IFS= read -r line; do
  # Extract the emoji name and URL from the JSON line
  name=$(echo "$line" | jq -r '.name')
  url=$(echo "$line" | jq -r '.url')
  
  # Extract the file extension (trim any URL query parameters if needed)
  extension="${url##*.}"
  extension="${extension%%\?*}"
  
  target_file="$EXPORT_DIR/${name}.${extension}"
  
  echo "Downloading '$name' -> $target_file"
  curl -s -o "$target_file" "$url"
  if [ $? -eq 0 ]; then
    downloaded=$((downloaded + 1))
  else
    echo "Failed to download $url"
    failed=$((failed + 1))
  fi
done < "$ALL_EMOJI_FILE"

echo "Download complete: $downloaded emoji downloaded, $failed failures."

https://emar10.dev/posts/export-slack-emoji/

essentially the same as in that link, but this script also handles fetching the N pages from the emoji adminList thing.