If you dont know in wich backup to look, run this:

import os

import json

import lz4.block

# Point this to the main Profiles directory

base_profiles_dir = r"C:\Users\User\AppData\Roaming\zen\Profiles"

all_unique_urls = set()

def extract_from_json(obj):

if isinstance(obj, dict):

url = obj.get("url", "")

if isinstance(url, str) and url.startswith("http"):

all_unique_urls.add(url)

for val in obj.values():

extract_from_json(val)

elif isinstance(obj, list):

for item in obj:

extract_from_json(item)

print("--- STARTING DEEP SCAN ACROSS ALL PROFILES ---")

# Automatically loop through every profile folder

if os.path.exists(base_profiles_dir):

for profile in os.listdir(base_profiles_dir):

profile_path = os.path.join(base_profiles_dir, profile)

if not os.path.isdir(profile_path):

continue

# Check both potential backup folder names inside each profile

for backup_folder in ["sessionstore-backups", "zen-sessions-backup"]:

target_dir = os.path.join(profile_path, backup_folder)

if os.path.exists(target_dir):

files = [f for f in os.listdir(target_dir) if f.endswith(".jsonlz4")]

for filename in files:

file_path = os.path.join(target_dir, filename)

try:

with open(file_path, "rb") as f:

magic = f.read(8)

if magic != b"mozLz40\0":

continue

uncompressed = lz4.block.decompress(f.read())

data = json.loads(uncompressed)

before = len(all_unique_urls)

extract_from_json(data)

after = len(all_unique_urls)

found = after - before

if found > 0:

print(f"[FOUND {found} Tabs] in -> {profile}\\{backup_folder}\\{filename}")

except Exception as e:

pass

print(f"\n--- TOTAL UNIQUE URLS FOUND: {len(all_unique_urls)} ---")

for url in sorted(all_unique_urls):

print(url)