Tools + answers for the people who keep things running
Your tech questions, answered in seconds.
Free, fast, browser-based tools for sysadmins, developers and security folks. No accounts, no uploads, no tracking your inputs. Plus field guides that give you the answer first and the theory after.
Flagship tools
All tools →Dev
AI Token Counter
Count tokens and estimate cost for GPT-5, Claude 4 and Gemini 3 before you call the API.
Runs in your browser
Dev
JSON to TypeScript
Turn any JSON payload into clean, typed TypeScript interfaces in one paste.
Runs in your browser
Sysadmin
tar Command Generator
Build, extract or list any tar archive by clicking, with every flag explained.
Runs in your browser
SEO
AI Crawler Blocker
Generate a robots.txt that blocks GPTBot, ClaudeBot and 20 other AI bots, plus Nginx and Apache rules.
Runs in your browser
By category
Developer tools
Decode, build and debug faster: JWT, cron, encodings and more.
Network tools
Subnets, DNS, IPs: the daily bread of network admins, done right.
Security tools
Passwords, TLS certificates and the things that keep you off incident calls.
Email & DNS tools
SPF, DKIM, MX and the plumbing behind deliverability.
SEO tools
Technical SEO checks that actually move rankings.
Sysadmin tools
Converters, calculators and cheats for people who run servers.
Latest articles
All articles →
Sysadmin
Meta Bets 10 Billion Dollars on a 1 GW Alberta Data Center
Meta will spend about 10 billion dollars on its first Canadian data center in Alberta, drawing near 1 gigawatt. Why power, not chips, now sets the pace.
Dev
SambaNova Raises 1B at 11B to Challenge Nvidia on Inference
SambaNova closed the first part of a 1 billion dollar Series F at an 11 billion valuation to scale on premises AI inference. Why the anti Nvidia bet grew.
Sysadmin
SK Hynix 26.5B Nasdaq Debut Bets Big on AI Memory
SK Hynix raised 26.5 billion dollars on Nasdaq, the biggest foreign US IPO ever, to fund HBM and fab expansion. What it means for AI memory supply.