Useful admin utilities
My tools for the everyday work.
Check DNS records, resize an image, inspect a script, or use a small utility. Script Safety Studio runs locally in your browser.
🔍 SPF Checker
Validate SPF and get quick linting & tips.
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🛡️ DMARC / DKIM Lookup
Check DMARC policy and DKIM selector records.
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🔐 Password Generator
Strong passwords with configurable rules & strength meter.
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🌐 CIDR / IP Calculator
Calculate subnet ranges, broadcast, and usable hosts.
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🔄 Base64 Encoder / Decoder
Encode or decode Base64 — detects JSON automatically.
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🪙 JWT Decoder
Decode JWT tokens — header, payload, expiry status.
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⏱️ Cron Expression Builder
Build and explain cron schedules visually.
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⚡ Regex Tester
Live regex matching with group capture & cheat sheet.
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🔑 Hash Generator
SHA-256, SHA-512, SHA-1 — fully client-side.
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🕐 Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
🖼️ Image Resizer
Resize or convert images right in your browser.
🛡️ Script Safety Studio
Anonymize, risk-scan, score, and inspect scripts locally. No AI API.