JSON Formatter
Format, validate, and beautify JSON data.
Developer tools
Browse 23 Toolars tools in this category. Every listing keeps processing mode, pricing, and AI consent visible before you open it.
Base64 Converter
Encode and decode Base64 text locally for API payloads, secrets, and debugging.
UUID Generator
Generate and inspect UUID values locally for tests, fixtures, and identifiers.
URL Encoder
Encode, decode, and inspect URL components without sending text to a server.
HTML Entity Encoder
Escape and unescape HTML entities for safe snippets, docs, and debugging.
JSON Diff Checker
Compare JSON payloads locally and review added, removed, and changed paths.
YAML Validator
Validate YAML syntax, indentation, and structure before config changes ship.
XML Formatter
Format or minify XML snippets locally for feeds, config files, and payload review.
URL Parser
Parse, decode, and inspect URL components with query, path, host, and protocol breakdowns.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal with validation notes.
File Size Converter
Convert file sizes across bytes, KB, MB, GB, TB, and PB with decimal and binary modes.
Chmod Calculator
Calculate Linux file permissions with octal, symbolic, and owner-group-other views.
IPv4 Subnet Calculator
Calculate IPv4 network address, broadcast, usable hosts, CIDR notation, and binary views.
User Agent Parser
Parse browser User-Agent strings into browser, OS, device type, and rendering engine.
Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes for local text and payload checks.
Password Generator
Generate secure passwords with length, symbol, number, and custom rule controls.
Regex Tester
Test regular expressions with real-time matches, groups, flags, and sample text.
SQL Formatter
Format and beautify SQL queries with dialect and style options for review.
Code Minifier
Minify JavaScript, CSS, and HTML code to reduce file size before shipping.
Cron Explainer
Decode cron expressions into readable schedules with next execution hints.
Docker Compose Converter
Convert between docker run commands and docker-compose.yml service definitions.
Base64 Image Encoder
Encode images to Base64 data URLs or decode Base64 content back to previewable images.
QR Code Generator
Generate QR codes from text, URLs, or data with customizable color and size settings.