Tech Tools
Understand networks, inspect data, and solve everyday technical problems with tools that run locally in your browser.
Subnet Calculator
Calculate an IPv4 network, then click blocks to divide or join subnets.
IP & CIDR Calculator
Inspect a network, mask, wildcard, broadcast address, and address type.
IPv4 Range Calculator
Convert two address endpoints into the smallest exact CIDR list.
Number Base Converter
Convert whole numbers among binary, octal, decimal, and hexadecimal.
JSON Formatter
Validate, beautify, or minify JSON without uploading it.
Base64 Encoder
Encode Unicode text or decode standard and URL-safe Base64.
Unix Timestamp
Convert Unix seconds, milliseconds, UTC, and local time.
UUID Generator
Generate up to 100 cryptographically random UUID v4 values.
SHA Hash Generator
Calculate SHA-256, SHA-384, and SHA-512 digests from text.
URL Encoder
Percent-encode or decode URL components safely.
JWT Decoder
Inspect token headers and payloads locally without verifying them.
Regex Tester
Test patterns, flags, matches, positions, and capture groups safely.
Text Diff Checker
Compare two text versions and identify changed lines.
Cron Explainer
Validate five-field cron expressions and preview upcoming runs.
Password Generator
Create secure random passwords or memorable passphrases.
JSON ↔ CSV
Convert arrays of objects and comma-separated tables locally.
Contrast Checker
Compare HEX colors against common WCAG text thresholds.
URL Parser
Split URLs into host, path, parameters, and fragment.
Private, browser-based technical tools
PlanIt Parrot processes inputs locally whenever possible. Network details, JSON, tokens, and text remain in your browser instead of being submitted to an application server.