YurlieAll Tools
30 tools · 4 categories · runs in your browser
CIDR Calculator
Calculate IPv4/IPv6 subnet information from CIDR notation
Subnet Calculator
Split a network into smaller subnets
IP Range Calculator
Convert IP address range to CIDR blocks
IP Calculator
Full IPv4 analysis: class, type, binary breakdown, network & broadcast
Wildcard Mask Calculator
Convert subnet mask to wildcard mask for ACL and firewall rules
IPv4 Converter
Convert IPv4 between decimal, binary, hex, and integer formats
IPv6 Converter
Expand, compress, and convert IPv6 addresses between formats
Subnet Mask Calculator
Convert prefix length to subnet mask, wildcard, and network details
AWS Subnet Calculator
Calculate AWS VPC subnets, usable IPs after 5 reserved IPs, and Multi-AZ VPC plans
JSON Formatter
Pretty-print and format JSON with syntax highlighting
JSON Validator
Validate JSON and get detailed error messages
JSON Minifier
Remove whitespace and minify JSON for production use
JSON Viewer
View JSON as an interactive collapsible tree with color-coded values
JSON → CSV
Convert JSON arrays to CSV format with proper escaping
CSV → JSON
Convert CSV data to JSON arrays instantly
JSON Diff
Compare two JSON objects and highlight added, removed, changed keys
CSV Analyzer
Analyze CSV files: column types, stats, and value frequency
Base64 Encoder / Decoder
Encode and decode Base64 strings instantly
URL Encoder / Decoder
Encode and decode URLs and query string parameters
JWT Decoder
Decode and inspect JSON Web Token header, payload, and claims
HTML Encoder & Decoder
Encode special characters to HTML entities or decode entities back to text
UUID Generator
Generate UUID v4 and v7 in various formats
Hash Generator
Generate MD5, SHA256, SHA512, and SHA3 hashes
Timestamp Converter
Convert Unix timestamps to dates across timezones
Regex Tester
Test regular expressions with live match highlighting
SQL Formatter
Format and beautify SQL queries with proper indentation and keyword casing
YAML Validator
Validate YAML syntax and view the parsed structure as a tree
XML Formatter
Format or minify XML with configurable indentation
Cron Generator
Build cron expressions visually with field presets and next run preview
Text Diff
Compare two text blocks line by line with color-coded diff output