JSON Formatter
Prettify raw JSON with consistent indentation.
JSONFormat
Developer Tools
Browse by language and utility to find the exact tool quickly.
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JSON Tools
Format, validate, minify, and transform JSON payloads.
JSON Validator
Validate JSON and pinpoint parse errors quickly.
JSONValidate
JSON Minifier
Strip whitespace from JSON for compact payloads.
JSONMinify
JSON to YAML
Convert JSON structures into YAML text.
JSONConvert
JSON to CSV
Turn arrays of objects into CSV for spreadsheets.
JSONConvert
JSON to TypeScript
Generate TypeScript interfaces from JSON samples.
JSONConvertGenerate
JSON Diff
Compare two JSON documents and list changed paths and values.
JSONCompare
YAML to JSON
Convert simple YAML key/value input into JSON output.
YAMLConvert
CSV to JSON
Convert CSV rows into JSON objects using the header row as keys.
CSVConvert
Multi-step Pipeline
Run JSON → CSV conversion in a single copy-ready pipeline.
JSONConvertBuild
Encoding Tools
Encode and decode common web-safe text formats.
Base64 Encode
Encode plain text to Base64 instantly.
Base64Encode
Base64 Decode
Decode Base64 strings into readable text.
Base64Decode
URL Encode
Percent-encode URL components safely.
URLEncode
URL Decode
Decode percent-encoded URLs and query strings.
URLDecode
HTML Entity Encode / Decode
Encode or decode HTML entities for safe rendering and content transport.
HTMLEncodeDecode
Query String to JSON
Parse URL query strings into JSON objects.
URLParseConvert
JSON to Query String
Build URL query strings from JSON key/value objects.
JSONConvert
Security Utilities
Inspect and generate auth-related tokens safely in-browser.
JWT Decoder
Decode JWT header and payload without server calls.
JWTDecodeInspect
JWT Generator
Generate unsigned JWT tokens for local testing.
JWTGenerate
Webhook Signature Verifier
Verify common webhook signatures (Stripe, GitHub, generic HMAC) locally.
HashValidateInspectGenerate
JWT Sign / Verify (HMAC)
Sign and verify JWTs with HMAC algorithms for local testing workflows.
JWTGenerateValidateInspect
HMAC Generator
Generate HMAC signatures from message + secret using SHA algorithms.
HashGenerateValidate
Password Generator
Generate secure random passwords with configurable length and symbols.
TextGenerate
Password Strength Checker
Estimate password strength using length and character variety checks.
TextValidateInspect
Time and Date Tools
Convert timestamps, compute differences, and work with cron.
Timestamp Converter
Convert between Unix timestamps and date strings.
Date/TimeConvert
Date to Unix Timestamp
Turn an ISO date/time into Unix seconds and milliseconds.
Date/TimeConvert
Unix Timestamp to Date
Convert Unix seconds or milliseconds into readable dates.
Date/TimeConvert
Date Difference Calculator
Calculate the difference between two date/time values.
Date/TimeCompare
Cron Parser
Parse 5-field cron expressions into readable schedules.
CronParseInspect
Cron Generator
Generate common 5-field cron expressions quickly.
CronGenerate
Text and Regex
Test, compare, transform, and generate text patterns.
Regex Tester
Test patterns and flags against live sample text.
RegexValidateInspect
Regex Generator
Generate starter regex patterns for common input types.
RegexGenerate
Text Diff Checker
Compare two text blocks and highlight line-level differences.
TextCompare
Slug Generator
Generate clean URL slugs from titles and phrases.
TextGenerateConvert
Lorem Ipsum Generator
Generate placeholder paragraphs for layouts and components.
TextGenerate
Case Converter
Convert text between lower, upper, camel, snake, and kebab case.
TextConvert
Markdown Editor + Preview
Edit Markdown and see a live rendered preview side-by-side.
MarkdownBuildFormatConvert
JSON Unminifier
Expand minified JSON into readable, indented JSON.
JSONUnminifyFormat
JavaScript Unminifier
Expand minified JavaScript into a readable, line-broken layout.
JavaScriptUnminifyFormat
CSS Unminifier
Expand minified CSS into readable rules and declarations.
CSSUnminifyFormat
CSS Specificity Conflict Graph
Analyze CSS selector specificity and property-level override conflicts.
CSSInspectCompare
HTML Formatter / Minifier
Format, unminify, or minify HTML snippets for readability or compact output.
HTMLFormatMinifyUnminify
HTML Validator + A11y Quick Audit
Run quick structural and accessibility checks on HTML snippets.
HTMLValidateInspect
HTML ↔ JSX Converter
Convert common HTML attributes and syntax to JSX and back.
HTMLConvertFormat
HTML ↔ Markdown Converter
Convert basic content markup between HTML and Markdown.
HTMLConvert
Hex Color Preview + Converter
Preview hex colors and convert them to RGB and HSL values.
CSSConvertInspect
Color Contrast Checker
Check contrast ratio between foreground and background colors with AA/AAA results.
CSSCompareValidateInspect
Text Diff (Side-by-side)
Compare two text blocks in a side-by-side line-aligned view.
TextCompare
Case-insensitive Compare
Compare two strings while ignoring case differences.
TextCompare
Line-by-line Compare
Compare two multi-line texts and show per-line matches and differences.
TextCompare
Replace Preview
Preview find-and-replace output with optional regex matching.
TextConvertInspect
CSS Formatter / Minifier
Format or minify CSS depending on selected mode.
CSSFormatMinifyUnminify
JavaScript Formatter / Minifier
Format or minify JavaScript depending on selected mode.
JavaScriptFormatMinifyUnminify
SQL Formatter
Reformat SQL statements for easier reading and review.
TextFormat
HTTP and API
Inspect HTTP details and build API request artifacts quickly.
GraphQL to REST Fallback
Generate best-effort REST call fallbacks from GraphQL operations.
HTTPConvertBuild
HTTP Status Codes Reference
Quickly look up HTTP status meaning, causes, and debugging notes.
HTTPReferenceInspect
HTTP Header Checker
Inspect raw HTTP headers and identify missing security headers.
HTTPInspectValidate
cURL Generator
Build cURL commands from method, URL, headers, and body.
ShellBuildGenerate
API Request Builder
Create request config snippets for fetch-based API calls.
HTTPBuildGenerate
cURL to fetch / axios Converter
Convert cURL commands into fetch and axios request snippets.
ShellConvertBuildGenerate
NGINX ↔ Apache Config Converter
Convert common NGINX and Apache directives with explicit manual-review warnings.
TextConvertInspect
IPv4 Subnet Calculator
Calculate network, broadcast, host range, and mask details from IPv4 CIDR input.
TextParseInspect
IPv6 Expand / Compress
Expand shorthand IPv6 addresses and compress full forms for readability.
TextConvertFormatInspect
CIDR Range Calculator
Calculate start and end IP ranges from IPv4 or IPv6 CIDR blocks.
TextParseInspectConvert
Meta Tag / Open Graph Builder
Generate SEO, Open Graph, and Twitter meta tag snippets quickly.
HTMLBuildGenerate
DNS Lookup
Lookup DNS records for a hostname using public resolver APIs.
HTTPInspectReference
Header Parser
Parse raw HTTP headers into structured JSON.
HTTPParseInspect
User-Agent Parser
Parse browser, OS, and device hints from user-agent strings.
HTTPParseInspect
General Utilities
Common generation and hashing utilities for daily dev work.
UUID Generator
Generate RFC 4122 UUIDs in bulk instantly.
UUIDGenerate
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512, and MD5 hashes from input text.
HashGenerate
NanoID Generator
Generate compact, URL-safe NanoID values instantly.
UUIDGenerate
ULID Generator
Generate lexicographically sortable ULID identifiers.
UUIDGenerate
XML ↔ JSON Converter
Convert XML to JSON and JSON back to XML.
HTMLConvert
Fake Data Generator
Generate sample names, emails, and addresses for test datasets.
TextGenerate
Random String Generator
Generate random strings with custom length and charset.
TextGenerate
Color Picker + Converter
Pick a color and convert HEX to RGB and HSL values.
CSSConvertInspect
Gradient Generator
Generate CSS linear gradients with live preview and copyable output.
CSSGenerateBuild
Box-shadow Generator
Generate CSS box-shadow values with visual preview.
CSSGenerateBuild
Clipboard Auto-detect
Paste from clipboard and automatically detect input type.
TextInspectParse
Paste Anything → Detect Type
Paste content and detect whether it is JSON, XML, CSV, YAML, and more.
TextInspectParse