Free utilities

Developer tools

Quick utilities for JSON, regex, cron, ShortUUID, and JWT — free to use. A small extra while you explore the portfolio.

JSON Formatter

Format, minify, and validate JSON instantly.

Paste messy API payloads and get pretty-printed or minified JSON with clear syntax errors.

Open tool

Regex Tester

Test regular expressions with live match highlights.

Experiment with patterns, flags, and sample text — see every match and capture group.

Open tool

Crontab Explorer

Decode cron schedules and preview upcoming runs.

Stop guessing whether `0 9 * * 1-5` means what you think — see plain language and next run times.

Open tool

UUID ↔ ShortUUID

Convert standard UUIDs to URL-safe ShortUUID strings and back.

Base57 encoding compatible with the shortuuid library — handy when APIs expect compact IDs.

Open tool

JWT Decoder

Inspect JWT headers, payloads, and expiry at a glance.

Paste a bearer token to read claims and timestamps. Decodes locally — signature is not verified.

Open tool

Base64 Encoder / Decoder

Convert plain text and Base64 in either direction.

Paste text or Base64 — the other field updates instantly. URL-safe and padding options included.

Open tool

Smart Payload Decoder

Base64 → text, then expand ShortUUIDs and structured fields.

Paste an encoded payload. The tool peels Base64 layers, then reads key:value lines or JSON and turns ShortUUID values into full UUIDs.

Open tool

Sponsored

Ad space reserved — plug AdSense or a partner banner here.

Inquire about my experience

Portfolio assistant — architecture, projects, and consulting.

See how RAG retrieval works