Text Diff Checker
Paste two versions of any text and see exactly what changed — line-by-line, side by side or inline. Auto-saves in your browser.
Tools
Small interactive utilities built as static-first pages.
Markdown Live Preview
Write Markdown and see the rendered result instantly. Formatting toolbar, word stats, and export to HTML or Markdown — all in your browser.
Kanban Board
A private, browser-only team Kanban board. Cards with assignees, tags, dates, attachments, and linked tasks — saved in your browser, exportable as JSON.
JSON Formatter & Validator
Paste any JSON to validate it, pretty-print or minify it, and see exactly where errors occur. Auto-saves in your browser.
HTML Editor
Write HTML, CSS, and JavaScript with an instant live preview in a sandboxed frame. Auto-saves in your browser, exportable as JSON or a standalone .html file.
CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV right in your browser — quoted fields, type detection, and multiple delimiters. Nothing leaves your machine.
Fellowship Steps
Track your real-world walking against the Fellowship's journey from Rivendell to Mount Doom. Manual step entry, live milestones, and a Middle-earth map layer.
Storage Sizing Calculator
Estimate usable, raw, and purchased storage across multiple workloads — with GFS retention, RAID sizing, growth projection, and cost estimates.