Smart tools for data workflows
Private, instant utilities — 100% in your browser, no sign-up.
JSON Validator
Validate, format, repair, and explore JSON with live validation and tree view.
YAML Validator
Validate, format, and explore YAML configs with live parsing and tree view.
GCloud Command Explorer
Interactively discover and build gcloud commands with live argument suggestions — 100% client-side.
JSON ↔ YAML
Instantly convert between JSON and YAML with perfect fidelity.
CSV Explorer
Profile messy CSVs, detect quality issues, and generate BigQuery + dbt schemas.
SQL Formatter
Pretty-print and lint SQL queries with dbt / BigQuery dialect support and customizable style.
Smathr CLI
The same data engineering tools in your terminal. Built for AI agents with structured output. npx works today.
Smathr CLI
The same tools in your terminal — built first for AI agents with structured output.
Why these tools exist
Small utilities that remove friction from everyday data engineering work.
Private by default
All validation, formatting, and transforms happen in your browser. Nothing is uploaded or logged.
Instant feedback
No waiting for a backend, no sign-up, no rate limits. Open a tool and start working immediately.
Built by practitioners
Every utility solves real friction from writing pipelines, dbt models, and Airflow DAGs.
About Smathr
Smathr is a personal collection of lightweight, high-quality tools built for data engineering workflows. The goal is simple: remove the tiny frictions that slow engineers down every day.
Built in public. Feedback and tool ideas are welcome on GitHub.