A developer's console,
in your browser tab.
29 focused tools, 34 converters, and libraries of ready-made cron schedules and regex patterns. No installs. Nothing leaves your machine.
Format & validate
Beautify minified JSON, validate against errors, format SQL, and reshape text lists — the everyday cleanup that starts most tasks.
Encode & secure
Base64 and URL transforms, JWT decoding, hashing, and bcrypt — the encoding and security primitives, all run locally.
Inspect & design
Preview HTML, test regex live, convert CSS units, check colour contrast, and look up DNS or WHOIS records.
Copy a ready-made answer
One-shot converters (px↔rem, JSON↔YAML, hex↔RGB), cron schedules in plain English, regex patterns token by token, and references for HTTP status codes, headers and MIME types — each its own focused page.
$29 tools, 8 categories
$Convert between formats
- How to Verify Webhook Signatures with HMAC-SHA256
- Unexpected Token in JSON at Position 0: What It Means and How to Fix It
- 413 Request Entity Too Large in nginx: How to Raise the Upload Limit
- ERR_TOO_MANY_REDIRECTS: How to Find and Fix a Redirect Loop
- npm EACCES Permission Denied: Fix Global Installs Without sudo
- Mixed Content Errors: Fixing HTTP Resources on an HTTPS Page
- Docker: Permission Denied While Connecting to the Docker Daemon Socket
- Security Headers Checklist: 6 HTTP Headers Every Site Should Send
No accounts, no upsells, no telemetry on your data. Just fast utilities that run in the tab you already have open.
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