All tools

Built to beat the best equivalent online: faster, clearer, and private. Tools marked green never send your input anywhere.

Developer tools

Decode and inspect JSON Web Tokens locally, with expiry timeline and signature check.

Runs in your browser

Build cron schedules with buttons, see the next 10 runs instantly.

Runs in your browser

Base64, Base64url, URL and hex, fully UTF-8 safe, with files and auto-detect.

Runs in your browser

Recover text typed in the wrong layout: AZERTY, QWERTY, QWERTZ, Dvorak, both ways.

Runs in your browser

CIDR, masks, ranges and subnet splitting with a visual map of the address space.

Runs in your browser

A, AAAA, MX, TXT, NS, CNAME and more, with response times and copy-ready records.

Cryptographically secure passwords and passphrases, with real crack-time estimates.

Runs in your browser

Expiry countdown, chain details, protocol and SAN list for any HTTPS host.

MD5, SHA-256, SHA-512 and HMAC for text and files, with checksum verification.

Runs in your browser

Audit all three email auth records, count SPF lookups, find DKIM selectors.

Response headers, redirect chain and a security-header grade for any URL.

Octal, symbolic and special bits both ways, with plain-English meaning and warnings.

Runs in your browser

Convert Mbps to MB/s, decimal to binary units, and get real transfer times.

Runs in your browser