dev-tools

Small, front-end-only utilities for developers. Paste, parse, understand — nothing is uploaded, stored, or tracked.

front-end only no network calls nothing stored no telemetry

live now

On the shelf

Build a pattern, pick your flags, and see exactly what it matches — highlighted in your test text. JS/ECMAScript regex semantics.

pattern

test text

Waiting for a pattern…

enter a pattern on the left to see matches

tips: g matches every occurrence · i case-insensitive · m ^ and $ match line starts/ends

Validate a JSON string and get it back pretty-printed — with the error position when it isn't valid. Handy for config blobs pasted out of logs.

json

Waiting for input…

paste JSON on the left — it stays in your browser

on the bench

Planned for near-future builds. Same house rules: browser-only, no network, no storage.