INI File Editor Free Online Tool 2026

Last updated March 22, 2026

INI File Format Structure

The INI File Editor provides a visual interface for editing INI configuration files. Here is the standard INI format with all its elements:

; This is a comment (semicolon style)
# This is also a comment (hash style)

; Global key (no section)
app_name = MyApplication
version = 1.0.0

[database]
host = localhost
port = 3306
name = myapp_db
username = dbuser
password = secretpassword
charset = utf8mb4

[cache]
driver = redis
host = 127.0.0.1
port = 6379
ttl = 3600
prefix = myapp_

[logging]
level = info
file = /var/log/myapp/app.log
max_size = 100MB
rotate = daily

[features]
; Boolean values (various formats accepted)
dark_mode = true
beta_features = false
maintenance_mode = 0
debug = yes

PHP Configuration (php.ini)

PHP's configuration file uses INI format. Here are the most important settings:

[PHP]
; Memory and execution limits
memory_limit = 256M
max_execution_time = 30
max_input_time = 60

; File uploads
file_uploads = On
upload_max_filesize = 64M
post_max_size = 64M
max_file_uploads = 20

; Error handling
error_reporting = E_ALL
display_errors = Off          ; Off in production!
display_startup_errors = Off
log_errors = On
error_log = /var/log/php/error.log

; Session configuration
session.save_handler = files
session.save_path = /var/lib/php/sessions
session.gc_maxlifetime = 1440
session.cookie_secure = On    ; HTTPS only
session.cookie_httponly = On  ; No JavaScript access
session.cookie_samesite = Strict

; OPcache (performance)
opcache.enable = 1
opcache.memory_consumption = 128
opcache.max_accelerated_files = 10000
opcache.revalidate_freq = 60

[Date]
date.timezone = America/New_York

[MySQLi]
mysqli.default_host = localhost
mysqli.default_port = 3306

Application Configuration File

A typical application config.ini with multiple sections:

[app]
name = My Web Application
environment = production
debug = false
secret_key = your-secret-key-here
timezone = UTC
locale = en_US

[server]
host = 0.0.0.0
port = 8080
workers = 4
timeout = 30
max_connections = 1000

[database]
driver = postgresql
host = db.example.com
port = 5432
name = production_db
user = app_user
password = db_password
pool_size = 10
pool_timeout = 30
ssl_mode = require

[redis]
host = redis.example.com
port = 6379
password = redis_password
db = 0
max_connections = 50

[email]
driver = smtp
host = smtp.sendgrid.net
port = 587
username = apikey
password = SG.your-sendgrid-api-key
from_address = noreply@example.com
from_name = My Application
encryption = tls

[storage]
driver = s3
bucket = my-app-uploads
region = us-east-1
access_key = AKIAIOSFODNN7EXAMPLE
secret_key = wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
cdn_url = https://cdn.example.com

Reading INI Files in Code

How to parse and use INI configuration files in different languages:

/* PHP — built-in parse_ini_file() */
$config = parse_ini_file('config.ini', true);  // true = process sections

echo $config['database']['host'];  // localhost
echo $config['app']['name'];       // My Web Application

// With type casting
$config = parse_ini_file('config.ini', true, INI_SCANNER_TYPED);
var_dump($config['app']['debug']);  // bool(false)

/* Python — configparser module */
import configparser

config = configparser.ConfigParser()
config.read('config.ini')

print(config['database']['host'])    # localhost
print(config['app']['debug'])        # false (string)
print(config.getboolean('app', 'debug'))  # False (bool)
print(config.getint('server', 'port'))    # 8080 (int)

# Iterate sections
for section in config.sections():
    print(f"[{section}]")
    for key, value in config[section].items():
        print(f"  {key} = {value}")

/* Node.js — ini package */
const ini = require('ini');
const fs = require('fs');

const config = ini.parse(fs.readFileSync('config.ini', 'utf-8'));
console.log(config.database.host);  // localhost
console.log(config.server.port);    // '8080' (string)

/* Java — java.util.Properties */
Properties props = new Properties();
props.load(new FileInputStream("config.ini"));
String host = props.getProperty("database.host", "localhost");

Common INI Format Variations

Different applications use slightly different INI format conventions:

/* Standard INI (= separator) */
key = value
key=value  ; spaces around = are optional

/* Colon separator (some apps use this) */
key: value
host: localhost
port: 3306

/* Multi-line values (leading whitespace = continuation) */
description = This is a long description
    that continues on the next line
    and even a third line

/* Array values (repeated keys) */
allowed_hosts = localhost
allowed_hosts = 127.0.0.1
allowed_hosts = example.com

/* Array with bracket notation */
extensions[] = php_curl
extensions[] = php_mbstring
extensions[] = php_pdo_mysql

/* Quoted values (for values with special characters) */
password = "p@ssw0rd!with#special&chars"
path = "C:\Program Files\MyApp"

/* Variable interpolation (some parsers support this) */
base_dir = /var/www/myapp
log_dir = ${base_dir}/logs
upload_dir = ${base_dir}/uploads