Tools
Eight focused tools. They run in your browser. Each page includes usage notes, privacy detail, and links into the related service or article.
Data
Pretty-print, minify, and validate JSON in the browser.
Data
Convert between JSON arrays and CSV tables, including file upload.
APIs
Inspect JWT headers, payloads, and expiry times locally.
Planning
Scope API complexity, architecture notes, and effort ranges.
Planning
Plan website or web-app investment with configurable ranges.
Infrastructure
Convert uptime percentages into monthly and yearly downtime.
Operations
A practical pre-launch checklist for SEO, security, and operations.
Data
Convert Unix time to dates and back, in seconds or milliseconds.