Developk's Tools is a free collection of developer utilities across four areas — network, security, coding, and text — gathered in one place. Use them straight from your browser with no install and no sign-up, and nothing you enter is sent to a server.
🌐
Network Tools
IP, domain & DNS diagnostics
🔐
Security Tools
Passwords, hashes & QR codes
💻
Coding Tools
Formatters & validators
📝
Text Tools
Text processing utilities
What is this site?
Development and operations constantly call for small but frequent tasks — IP/DNS diagnostics, generating passwords and hashes, formatting JSON and SQL, converting text. Instead of hunting down a scattered set of sites each time, this hub organizes about 60 such tools into four categories. Most are built to run entirely in your browser (client-side), so even sensitive values you paste never leave your machine.
How to use it
- Network — check your IP, diagnose DNS & domains, inspect HTTP headers
- Security — generate passwords, hashes & tokens, inspect SSL certificates
- Coding — format JSON, SQL & HTML, convert timestamps
- Text — search & replace, diff comparison, encoding conversion
📘 New here? Start with the guides
See the how-to guides for the background and tips behind each tool.