🛠️ DE Toolkit

Free Developer & Data Engineering Tools

No signup. No tracking. No data leaves your browser. Just useful tools.

🔧 Developer Utilities

{ } JSON Formatter NEW

Format, validate, and minify JSON. Shows key count and size comparison.

Open Tool →

🔒 Hash Generator NEW

Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly.

Open Tool →

🔐 Base64 Encoder NEW

Encode/decode Base64 and URL-safe Base64 strings.

Open Tool →

⏰ Cron Builder

Build cron expressions visually. See next 5 run times.

Open Tool →

💰 Cost Calculators

❄️ Snowflake Calculator

Estimate credit costs before scaling. Compare warehouse sizes.

Open Tool →

💎 BigQuery Estimator

Calculate query costs by data scanned. Includes free tier.

Open Tool →

⚙️ Code Generators

🔄 Airflow DAG Generator

Generate production-ready DAG code. Configure schedules and dependencies.

Open Tool →

📄 Resources

📊 DE Cheatsheet 2026 FEATURED

SQL, Airflow, Spark, Kafka, dbt, interview prep — 9000+ words of practical knowledge.

Get Cheatsheet →

🗂️ DataStack Tools

Directory of 100+ data engineering tools. Compare ETL, orchestration, warehouses.

Browse Tools →

💚 These tools are free. Tips keep them that way.

Every tool here runs entirely in your browser — no servers, no tracking, no data collection.

If any tool saved you time, consider a tip:

0x4946d2344C740F113FbdC0346DFC79f5F6930cD8

Accepts any amount — even $1 helps

Ethereum Polygon Arbitrum Base USDC