Dev Toolbox — JSON, CSV, JWT, Base64 & more

Fifteen everyday developer transforms, right on your editor selection — and every one runs offline. No paste-into-a-website, no data leaving your machine.

Includes a JSON Repair command most formatters don't: paste broken JSON with smart quotes, single quotes, trailing commas or unquoted keys and get valid JSON back.

Open the Command Palette (Ctrl/Cmd+Shift+P), type Dev Toolbox, pick a command — it transforms the selected text (or the whole file).

• JSON — Format / Minify / Repair (fixes smart quotes, single quotes, trailing commas, unquoted keys)
• CSV → JSON and JSON → CSV
• JWT — Decode (header + payload)
• Base64 encode / decode · URL encode / decode
• Lines — sort A→Z, remove duplicates
• Case — camelCase / snake_case / kebab-case

Everything runs locally in the extension host. No network, no telemetry, no accounts.

Install

Search "Dev Toolbox" in the VS Code Extensions view, or install the .vsix.

Publishing (for the author)

npm i -g @vscode/vsce
vsce package                       # builds rebel-dev-toolbox-1.0.3.vsix
vsce publish                       # needs a Marketplace publisher + Azure DevOps PAT

MIT licensed.