Fast, privacy-first tools
Client-side encryption for secrets. Handy dev & net utilities. Minimal fuss.
Secret Share
Encrypts in your browser. Optional password, expiry, and one-time links.
- 🔑 Key stays in the URL fragment
- 🕒 Burn-after-read option
- 🧹 Auto cleanup of expired items
Base64 Encode/Decode
Unicode-safe conversions in one click.
JSON/YAML/XML Formatter
Validate and pretty-print. YAML uses a safe loader.
JWT Inspector
Decode headers/payloads and verify HS256 locally.
CIDR Calculator
Network, netmask, broadcast, host range, and totals.
QR Generator
Create clean PNG QR codes with adjustable ECC.
Regex Tester
Live matches, flags, group captures, and replacements.
Epoch ↔ Date
Local & UTC conversions — seconds or milliseconds.
Password Generator
Strong passwords with entropy meter.
Text Diff
Side-by-side or unified.
Cron Helper
Next run times with timezone.
DNS Tools
A/AAAA/MX/TXT/CAA/NS lookups.
WHOIS
Registrar, dates, nameservers.
TLS/SSL Checker
Issuer, SANs, expiry, protocol.
HTTP Inspector
Status, headers, redirects.
UUID / ULID
Generate v1/v4/v7 & ULID.
Hash & HMAC
SHA, SHA3, BLAKE2, HMAC.
Base-N
Convert across bases 2–62.
URL / Slug / Case
Encode/decode & string cases.
CSV ⇄ JSON
Quick conversions.
JSON Schema
Validate JSON with a schema.
Line tools
Sort, uniq, dedupe, regex.
Date / Time
Format & convert zones.
Unit converter
Length, weight, temp, time.
CIDR tools
Merge/collapse & expand small.
IP info
v4/v6, private, rDNS.
SPF/DMARC/DKIM
DNS auth records.
TCP port
Reachability with timing.
HTTP probe
Latency & final URL.
JWT sign/verify
HS/RS/ES.
TOTP
Rolling codes & verify.
Argon2 / bcrypt
Password hash playground.
Unix Permissions
Octal ⇄ rwx, chmod builder.
Color Converter
HEX, RGB(A), HSL(A), HWB.