Free developer tools
for everyday tasks

Base64 Encoder / Decoder

Encode and decode Base64 text locally in your browser, UTF-8 safe.

DNS Lookup

Ask several public resolvers the same DNS question at once and see where they disagree. A, AAAA, CNAME, MX, TXT, NS, SOA and CAA, in your browser.

JSON Formatter

Beautify and format JSON with selectable indentation, instantly in your browser. No upload, no sign-up.

Website Status Checker

Check whether a website is up — or trace where a link goes. Get HTTP status, response time, every redirect hop and the final URL.

Format, validate and convert structured data.

Encode and decode text and data for the web.

Hash, sign and inspect cryptographic material and tokens.

Check how a domain answers: DNS records and HTTP responses.

Analyze and work with text and regular expressions.

Convert Unix timestamps and dates.

Generate unique identifiers.

Build shell commands and configuration for servers and containers.