Is this tool free to use?

Yes, this tool is completely free to use with no usage limits, registration, or hidden charges.

Is my data sent to a server?

No. All processing happens entirely in your browser. Your data never leaves your device, ensuring complete privacy and security.

Does this tool work offline?

Once the page is loaded, the tool works entirely client-side and does not require an active internet connection for its core functionality.

What is a Kafka bootstrap server?

Kafka uses a bootstrap server URL to discover the cluster: `kafka://host:9092`. The bootstrap server returns metadata about the full cluster, including all broker endpoints.

What security protocols does Kafka support?

Kafka supports: PLAINTEXT (no encryption), SSL (encrypted), SASL_PLAINTEXT (authentication without encryption), and SASL_SSL (authentication with encryption). Choose based on your security requirements.

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Kafka Connection String Builder

v1.0

Kafka Builder

Local OnlyNo Login

Parse Existing Connection String

Paste a connection string to auto-detect the database and populate fields

Database Connection

Database Type

Host

Port

Database Name

Username

Password

SSL Mode

Warning: database

Database name is empty

Generated Connection Strings

Standard connection URI

kafka://localhost

All Formats Preview

URI

kafka://localhost

Spring Boot

# Kafka Configuration
spring.kafka.url=kafka://localhost

Docker Compose

version: '3.8'

services:
  kafka:
    image: confluentinc/cp-kafka:latest
    container_name: kafka-db
    restart: unless-stopped
    ports:
      - "9092:9092"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
    depends_on:
      - zookeeper

  zookeeper:
    image: confluentinc/cp-zookeeper:latest
    container_name: kafka-zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    volumes:
      - kafka_data:/var/lib/kafka/data

volumes:
  kafka_data:

K8s Secret

apiVersion: v1
kind: Secret
metadata:
  name: kafka-connection
type: Opaque
stringData:
  url: "kafka://localhost"
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: kafka-config
data:
  host: "localhost"
  port: "9092"
  database: ""
  username: ""

.env

DATABASE_URL="kafka://localhost"
DB_HOST="localhost"
DB_PORT=9092
DB_NAME=""
DB_USER=""

Kafka Config

# Kafka Client Configuration
bootstrap.servers=localhost:9092
security.protocol=PLAINTEXT
client.id=kafka-client

Kafka Connection String Builder

Generate Kafka bootstrap connection configurations with SSL/SASL authentication, consumer group, and client settings.

Kafka Connection String Builder

Generate Kafka bootstrap connection configurations.

Kafka Connection Format

PLAINTEXT

kafka://host:9092

SSL

kafka://host:9093?security_protocol=SSL

SASL_SSL

kafka://host:9093?security_protocol=SASL_SSL&sasl_mechanism=SCRAM-SHA-256

Spring Boot

spring.kafka.bootstrap-servers=host:9093
spring.kafka.security.protocol=SSL
spring.kafka.consumer.group-id=my-consumer-group

How to Use

Select Kafka as your provider
Enter host, port, and security protocol
Configure SASL mechanism if applicable
Set consumer group and client ID
Generate your connection config

Common Mistakes to Avoid

❌ Using PLAINTEXT in production

✅ Always use SSL or SASL_SSL for production Kafka deployments to encrypt data in transit and authenticate clients.

← Back to All Connection String Builders View All 14 Database Builders →

Other Database Connection Builders

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LangStop/

Kafka Connection String Builder

v1.0

Kafka Builder

Local OnlyNo Login

Parse Existing Connection String

Paste a connection string to auto-detect the database and populate fields

Database Connection

Database Type

Host

Port

Database Name

Username

Password

SSL Mode

Warning: database

Database name is empty

Generated Connection Strings

Standard connection URI

kafka://localhost

All Formats Preview

URI

kafka://localhost

Spring Boot

# Kafka Configuration
spring.kafka.url=kafka://localhost

Docker Compose

version: '3.8'

services:
  kafka:
    image: confluentinc/cp-kafka:latest
    container_name: kafka-db
    restart: unless-stopped
    ports:
      - "9092:9092"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092
    depends_on:
      - zookeeper

  zookeeper:
    image: confluentinc/cp-zookeeper:latest
    container_name: kafka-zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    volumes:
      - kafka_data:/var/lib/kafka/data

volumes:
  kafka_data:

K8s Secret

apiVersion: v1
kind: Secret
metadata:
  name: kafka-connection
type: Opaque
stringData:
  url: "kafka://localhost"
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: kafka-config
data:
  host: "localhost"
  port: "9092"
  database: ""
  username: ""

.env

DATABASE_URL="kafka://localhost"
DB_HOST="localhost"
DB_PORT=9092
DB_NAME=""
DB_USER=""

Kafka Config

# Kafka Client Configuration
bootstrap.servers=localhost:9092
security.protocol=PLAINTEXT
client.id=kafka-client

Kafka Connection String Builder

Generate Kafka bootstrap connection configurations with SSL/SASL authentication, consumer group, and client settings.

Kafka Connection String Builder

Generate Kafka bootstrap connection configurations.

Kafka Connection Format

PLAINTEXT

kafka://host:9092

SSL

kafka://host:9093?security_protocol=SSL

SASL_SSL

kafka://host:9093?security_protocol=SASL_SSL&sasl_mechanism=SCRAM-SHA-256

Spring Boot

spring.kafka.bootstrap-servers=host:9093
spring.kafka.security.protocol=SSL
spring.kafka.consumer.group-id=my-consumer-group

How to Use

Select Kafka as your provider
Enter host, port, and security protocol
Configure SASL mechanism if applicable
Set consumer group and client ID
Generate your connection config

Common Mistakes to Avoid

❌ Using PLAINTEXT in production

✅ Always use SSL or SASL_SSL for production Kafka deployments to encrypt data in transit and authenticate clients.

← Back to All Connection String Builders View All 14 Database Builders →

Other Database Connection Builders

PostgreSQL MySQL MariaDB SQLite SQL Server Oracle MongoDB Redis Elasticsearch RabbitMQ ClickHouse Cassandra CockroachDB

Additional Parameters4

Kafka Connection String Builder

Kafka Connection String Builder

Kafka Connection Format

PLAINTEXT

SSL

SASL_SSL

Spring Boot

How to Use

Common Mistakes to Avoid

Other Database Connection Builders

Related Tools

All Developer Tools

JSON Tools Hub

Code Generation Hub

API Tools

Linux Tools

AI Prompt Engineering

Popular Developer Tools

JSON Formatter

JSON to YAML

JSON to TypeScript

JWT Decoder

Regex Tester

Base64 Encoder

Cron Helper

JSON to CSV

HTML Formatter

SQL Formatter

Timestamp Converter

Hash Generator

Password Generator

Additional Parameters4

Kafka Connection String Builder

Kafka Connection String Builder

Kafka Connection Format

PLAINTEXT

SSL

SASL_SSL

Spring Boot

How to Use

Common Mistakes to Avoid

Other Database Connection Builders