Guides

Every tool on ToolzKit answers a question. These guides explain the concepts behind them — why Base64 exists, what a Unix timestamp really stores, how a regex engine backtracks — so the tool output makes sense rather than being taken on trust.

• How to format JSON correctly

  6 min read

  Indentation, key order, trailing commas and the parser errors that catch everyone out.

  • JSON Formatter & Validator
  • JSON Minifier
  • JSON to CSV Converter
  • YAML to JSON Converter

• What is Base64 encoding?

  5 min read

  Why binary data gets turned into text, how the 33% size increase happens, and what Base64 is not.

  • Base64 Encoder
  • Base64 Decoder
  • URL Encoder
  • SHA-256 Hash Generator

• URL encoding explained

  5 min read

  Percent-encoding, reserved characters, and the difference between encodeURI and encodeURIComponent.

  • URL Encoder
  • URL Decoder
  • URL Parser
  • Query String Parser

• How Unix timestamps work

  6 min read

  Epoch seconds, milliseconds, time zones, leap seconds and the 2038 problem in plain terms.

  • Unix Timestamp Converter
  • Date Difference Calculator
  • Time Zone Converter

• JSON vs CSV: choosing a data format

  6 min read

  Nesting, types, streaming and spreadsheet compatibility — when each format is the right answer.

  • CSV to JSON Converter
  • JSON to CSV Converter
  • JSON Formatter & Validator
  • YAML to JSON Converter

• How to generate secure passwords

  6 min read

  Entropy, length versus complexity, password managers and what actually gets cracked.

  • Password Generator
  • Random Token Generator
  • SHA-256 Hash Generator
  • UUID Generator

• How regex testing works

  7 min read

  Flags, greedy matching, capture groups and how to avoid catastrophic backtracking.

  • Regex Tester
  • Text Diff Checker
  • Slug Generator
  • Whitespace Cleaner

• What are UTM parameters?

  5 min read

  The five tracking tags, sensible naming conventions and how to avoid split reporting.

  • UTM Builder
  • URL Parser
  • Query String Parser
  • Slug Generator