Tools for Data Engineers
Data engineers spend their days transforming, validating, and routing data between systems. A fast set of browser tools handles the routine tasks — format a JSON payload, convert a schema, clean a duplicate list — without writing a Python script or spinning up a Jupyter notebook for a one-off check. All tools below are free and run entirely in your browser.
JSON Formatter & Validator
Validate and pretty-print JSON from API responses, Kafka messages, database exports, and webhook payloads. Instantly spot malformed records and structural errors before they reach your pipeline and cause downstream failures.
JSON to YAML Converter
Convert JSON schemas and configs to YAML for use in dbt project files, Airflow DAG configs, Kubernetes-based data platform deployments (Spark on K8s, Flink), and Prefect / Dagster workflow definitions.
JSON to XML Converter
Legacy data warehouses, enterprise data buses (MuleSoft, IBM MQ), and some REST APIs still require XML. Convert JSON payloads to well-formed XML in one step — no XSLT or code required.
Base64 Encoder / Decoder
Decode Base64-encoded database credentials from environment variables and secrets managers, or encode binary and binary-adjacent data (images, certificates, raw bytes) for embedding in JSON payloads and YAML configs.
kubectl get secret my-secret -o jsonpath="{.data.password}" → paste the value here to decode instantly.URL Encoder / Decoder
Encode special characters in database connection strings, JDBC URLs, and query parameters. Decode percent-encoded values from web server access logs when building ingestion pipelines for clickstream data.
Hex Converter
Convert between hexadecimal and decimal representations when working with raw binary data formats, UUIDs stored as bytes, database internal rowids, and binary file headers during format parsing.
Timestamp Converter
Convert Unix epoch timestamps to ISO 8601 dates and back. Essential when debugging time-series pipelines, event streams, and any data source that mixes epoch seconds with human-readable date strings across different time zones.
Duplicate Line Counter & Remover
Paste a list of IDs, email addresses, domain names, or category labels and instantly find or remove duplicates. Faster than writing a SELECT DISTINCT or pandas drop_duplicates() for a quick ad-hoc check on a sample.
Character Counter
Count characters, words, and bytes in any text block. Useful for validating string field lengths against database column constraints (VARCHAR limits) and checking values before bulk import into strict-schema databases.
Code & Config Diff Tool
Compare two versions of a schema definition, dbt model, SQL query, or pipeline config side by side. Quickly identify what changed between pipeline runs or config deployments without needing a full Git workflow.
RegExp Tester
Build and test regex patterns for data cleaning, field extraction, and validation rules used in pipeline transformations, Spark regexp_extract calls, and dbt tests.
regexp_extract(col, pattern, 1) expressions here before embedding them in production jobs.Unicode Converter
Inspect and convert Unicode characters when debugging character encoding issues in text pipelines — particularly when processing multilingual data sources, detecting invisible characters, or handling BOM (Byte Order Mark) problems.
MD5 / Hash Generator
Generate deterministic hash values for data anonymisation testing, verify checksums of data files downloaded from external sources, and test consistent hashing approaches for partition key design.
Password Generator
Generate strong random credentials when creating pipeline service accounts, database users, and API integrations across development, staging, and production environments.
Color Converter
Convert colour values between HEX, RGB, and HSL when building data visualisation dashboards — useful for matching brand colour palettes to hex codes in Tableau, Superset, or Grafana chart configs.
Crontab Calculator
Validate and explain the cron expressions that schedule your Airflow DAGs, dbt Cloud jobs, and data warehouse refresh tasks. See the next 10 execution times to verify your schedule before deploying.
schedule_interval cron string here to confirm it runs at the intended time — especially across DST boundaries.cURL Converter
Convert cURL commands to readable HTTP request breakdowns for documenting REST API data sources and building ingestion pipeline specifications. Share reproducible request examples in pipeline runbooks.
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