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JSON

JSON Formatter

Pretty-print, minify, and validate JSON with error highlighting.

#json

#format

JSON to Code

Convert JSON to TypeScript, Go, Python, Rust, Swift, Kotlin, C#, Java, Dart, PHP, or Zod — bidirectional, with per-language options.

#json

#codegen

JSON Property Remover / Picker

Omit or pick JSON properties by dot path with wildcard and array support.

#json

#transform

JSON Array Merger (by key)

Merge two JSON arrays of objects on a join key with inner / left / right / outer joins.

#json

#transform

JSON Diff

Semantic, key-aware diff between two JSON documents with added / removed / changed paths.

#json

#diff

JSONPath Tester

Run JSONPath queries with filters and recursive descent against any JSON document.

#json

#transform

JSON Schema Validator

Validate JSON against a JSON Schema with detailed per-path error reporting.

#json

#schema

JSON Flatten / Unflatten

Convert nested JSON to dot-key form and back — perfect for env files and i18n bundles.

#json

#transform

JSON Sort Keys

Sort JSON object keys alphabetically with deep/shallow modes for stable diffs.

#json

#format

JSON Key Renamer

Recursively rename JSON keys with case conversion (camel/snake/kebab) and custom find/replace mappings.

#json

#transform

JSON → JSON Schema

Infer a Draft-07 JSON Schema from a sample document with format detection and required keys.

#json

#schema

JSON Patch (RFC 6902)

Generate add / remove / replace patches between two JSON documents and apply them safely.

#json

#diff

JSON Deep Merge

Recursively merge two JSON objects with configurable array and conflict strategies.

#json

#transform

JSON ↔ Query String

Convert between JSON objects and URL query strings with nested keys and array formats.

#json

#url

JSON Escape / Unescape

Escape JSON or text into a string-safe payload for embedding in code, with quote wrapping options.

#json

#encode

JSON Minify with Stats

Minify JSON and report size reduction, key count, depth, and value-type breakdown.

#json

#minify

JSON Mock Generator

Generate fake records from a JSON Schema with format-aware values via Faker.

#json

#schema

Formatters

Markdown Preview

Live GitHub-flavoured markdown preview with HTML export.

#markdown

#format

SQL Formatter

Pretty-print or minify SQL with multi-dialect support.

#sql

#format

XML Formatter & JSON Converter

Pretty-print or minify XML and convert between XML and JSON.

#xml

#json

Text Case Converter

Convert text between camelCase, snake_case, kebab-case, Title Case, and more.

#text

#transform

Diff Viewer

Compare two texts side-by-side or inline with word-level highlighting.

#text

#diff

SVG Optimizer

Minify and optimize SVG markup with SVGO and see before/after size comparison.

#svg

#image

Converters

YAML ↔ JSON

Convert between YAML and JSON with live validation.

#yaml

#json

CSV ↔ JSON

Convert between CSV and JSON with header detection and delimiter selection.

#csv

#json

Image ↔ Base64

Convert images to base64 / data URLs and decode them back with drag-and-drop.

#image

#base64

Base64 Encoder / Decoder

Encode and decode text or files with URL-safe support.

#base64

#encode

URL Encoder / Decoder

Encode and decode URLs and URI components safely.

#url

#encode

Color Picker & Converter

Visually pick colors and convert between HEX, RGB, HSL, HSV.

#color

#css

Number Base Converter

Convert between binary, octal, decimal, hex with bitwise operation preview.

#convert

#encode

Unix Timestamp Converter

Convert between Unix timestamps and human dates with timezone support.

#date-time

#convert

CSS Units Converter

Convert between px, rem, em, %, vh, vw, and pt with configurable base and viewport.

#css

#convert

Date/Time Timezone Converter

Convert dates and times between timezones with daylight saving time awareness.

#date-time

#timezone

Generators

UUID Generator

Generate UUID v1, v4, or v7 in bulk.

#identifier

#generate

Hash Generator

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes of text.

#hash

#crypto

Fake Data Generator

Generate names, emails, addresses, lorem text and JSON records in bulk.

#generate

#text

QR Code Generator

Generate downloadable PNG/SVG QR codes from text or URLs with custom colors.

#image

#url

Placeholder Image Builder

Build Lorem Picsum and placehold.co URLs with size, color, and text presets.

#image

#generate

Favicon Generator

Generate every favicon size and a multi-res .ico from a single uploaded image.

#image

#generate

Cron Expression Generator

Build cron expressions visually with field-by-field controls and presets.

#cron

#generate

CSS Gradient Generator

Build linear, radial, and conic gradients with multi-stop support and a live preview.

#css

#color

Lists

Remove Duplicate Lines

Drop repeated lines from a list, preserving order.

#list

#dedupe

Inner Join Two Lists

Items present in both List A and List B (intersection).

#list

#set

Left-Exclusive Join

Items in List A but not in List B (A − B).

#list

#set

Right-Exclusive Join

Items in List B but not in List A (B − A).

#list

#set

Full-Exclusive Join

Symmetric difference — items in exactly one list.

#list

#set

Full-Inclusive Join

Union — every item from either list, deduped.

#list

#set

Remove Blank Lines

Strip empty and whitespace-only lines.

#list

#text

Trim Each Line

Trim leading and trailing whitespace from every line.

#list

#text

Sort Lines

Sort lines alphabetically, ascending or descending.

#list

#sort

Natural Sort Lines

Human-friendly sort — item2 before item10.

#list

#sort

Reverse Line Order

Flip the order of lines top-to-bottom.

#list

#transform

Filter Lines by Regex

Keep or drop lines matching a regex pattern.

#list

#filter

Add Prefix / Suffix

Wrap each line with custom text before and/or after.

#list

#transform

Number Lines

Prepend numbering — 1., 1), [1], or zero-padded.

#list

#transform

Bulletize Lines

Add a markdown bullet (-, *, or •) to each line.

#list

#transform

Quote-Wrap Lines

Wrap each line in single, double, or backtick quotes.

#list

#transform

Lines → Delimited String

Join lines into a single string with a chosen delimiter.

#list

#join

Delimited String → Lines

Split a delimited string into one item per line.

#list

#split

Lines → JSON Array

Convert lines to a JSON array of strings.

#list

#convert

Security

JWT Decoder

Decode JWT header, payload, and signature with expiry warnings.

#jwt

#security

JWT Encoder

Sign HS256/384/512 JSON Web Tokens locally with Web Crypto.

#jwt

#security

Web

Regex Tester

Test JavaScript regular expressions with live match highlighting.

#regex

#web

Cron Expression Parser

Translate cron expressions to plain English and preview next runs.

#cron

#parse

Reference

HTTP Status Codes

Searchable reference for every HTTP status code with descriptions and RFC links.

#http

#reference

MIME Type Lookup

Find MIME types by file extension or search by content type and keyword.

#http

#reference

Image Metadata Extractor

Extract EXIF, GPS, camera, and dimension metadata from images entirely in your browser.

#image

#reference