Developer Tools
25 Utilities AvailableFree developer utilities — JSON formatter, regex tester, Base64 encoder, diff checker, UUID generator, cron parser.
ZeroDayCops JSON Formatter & Validator
Validate, format, minify, and check syntax of JSON strings with highlighting.
ZeroDayCops Base64 Encoder / Decoder
Encode text to Base64 format or decode Base64 back into readable text.
ZeroDayCops UUID / GUID Generator
Generate cryptographically secure RFC4122 Version 4 UUIDs.
ZeroDayCops URL Encoder
Encode text into URL-safe formats. Replaces unsafe characters with % hex representations.
ZeroDayCops URL Decoder
Decode URL-safe percentage encoded strings back into readable text.
ZeroDayCops Binary Text Converter
Translate normal ASCII text into binary streams or parse binary back to text.
ZeroDayCops Hex Text Converter
Translate plain text into hexadecimal notation.
ZeroDayCops ROT13 Obfuscation Tool
Rotate alphabets by 13 shifts to obfuscate text strings.
ZeroDayCops XML Formatter
Prettify, validate, and format XML tags with custom indent rules.
ZeroDayCops HTML Formatter
Prettify, indent, and format raw HTML documents.
ZeroDayCops CSS Formatter
Format, indent, and organize CSS stylesheets.
ZeroDayCops SQL Formatter
Pretty print and format database SQL queries.
YAML ↔ JSON Converter
Convert YAML configurations to JSON schemas and vice versa.
Text Diff Checker
Compare text inputs and highlight line-by-line differences.
Cron Expression Parser
Parse and translate cron expressions to readable text.
Timestamp Converter
Translate Unix Epoch timestamps to human dates and vice versa.
Markdown Previewer
Write and preview markdown formatting client-side.
HTML/CSS/JS Minifier
Compress source code sizes by stripping whitespaces and comments.
Code Beautifier & Indenter
Beautify and indent loose scripts for cleaner code structure.
Color Code Converter
Convert color formats between Hex, RGB, and HSL formats.
Lorem Ipsum Generator
Generate placeholder text elements for mock layouts.
QR Code Generator
Generate QR codes for URLs, text, or contacts client-side.
URL Slug Generator
Translate normal text strings into URL-safe dash slugs.
Case Style Converter
Convert text cases between UPPERCASE, lowercase, camelCase, and snake_case.
HTTP Status Code Reference
Quick reference catalog detailing HTTP status code definitions.