Small tools. Less friction.

JSON Formatter

Format and beautify JSON with readable indentation.

JSON Minifier

Remove unnecessary whitespace from JSON data.

JSON Validator

Check JSON syntax and see clear parsing errors.

JSON Diff

Compare two JSON documents and inspect their values.

JSON Escape / Unescape

Escape text for JSON strings or decode escaped content.

Base64 Encoder

Encode text as Base64 with Unicode support.

Base64 Decoder

Decode Base64 text safely in your browser.

URL Encoder

Encode text for safe use in URL components.

URL Decoder

Decode percent-encoded URL components.

HTML Escape / Unescape

Escape or decode HTML special characters in text.

Date, IDs & Text

10 TOOLS

Unix Timestamp Converter

Convert Unix timestamps in seconds or milliseconds to readable dates.

Epoch Time Converter

Convert a date and time into Unix epoch seconds and milliseconds.

ISO 8601 Converter

Normalize date strings to ISO 8601 and inspect their UTC timestamp.

Timezone Converter

View a date and time in another timezone without leaving your browser.

IDs & Text

UUID Generator

Generate one or more random UUID v4 identifiers.

IDs & Text

ULID Generator

Generate sortable ULIDs with a timestamp and secure random component.

IDs & Text

Random String Generator

Generate random strings with a selectable character set.

Text

Word Counter

Count words, characters, and lines in text locally.

Text

Character Counter

Count visible characters, Unicode code points, and UTF-16 units.

Text

Case Converter

Convert text between common programming and writing case styles.

Regex & Web

10 TOOLS

Regex

Regex Tester

Test a regular expression against sample text and inspect matches.

Regex

Regex Replace Tester

Preview JavaScript regular expression replacements on sample text.

Regex

Regex Reference

Review common JavaScript regex tokens, character classes, and examples.

Scheduling

Cron Expression Generator

Create common five-field cron schedules from a preset.

Scheduling

Cron Expression Parser

Validate a five-field cron expression and explain each field.

HTTP Status Code Lookup

Look up the meaning and category of an HTTP status code.

MIME Type Lookup

Find common MIME types by file extension or MIME type.

User-Agent Parser

Inspect the browser, operating system, and device clues in a User-Agent string.

Query String Parser

Decode a query string and group repeated parameter values.

URL Parser

Break an absolute URL into its protocol, host, path, and query fields.

YAML, XML & Data

10 TOOLS

YAML Formatter

Format YAML with consistent indentation and readable output.

YAML Validator

Check YAML syntax and locate parsing errors.

YAML to JSON

Convert YAML documents into formatted JSON.

JSON to YAML

Convert JSON values into readable YAML.

XML Formatter

Format XML with readable indentation and validate its structure.

XML Validator

Check XML for well-formed syntax in your browser.

XML to JSON

Convert XML elements and attributes into a JSON structure.

JSON to XML

Convert a JSON object into XML elements and attributes.

CSV to JSON

Convert CSV rows into JSON objects using the first row as headers.

JSON to CSV

Convert an array of JSON objects into CSV with a header row.

SQL & Database

10 TOOLS

SQL Formatter

Format common SQL statements with readable clauses and indentation.

SQL Minifier

Reduce SQL whitespace while keeping quoted values intact.

SQL Syntax Highlighter

Highlight common SQL keywords, strings, comments, and identifiers.

SQL Pretty Printer

Expand SQL clauses and list expressions onto separate lines.

SQL IN Clause Generator

Turn a list of values into safely quoted SQL IN expressions.

CSV to SQL INSERT

Generate SQL INSERT statements from CSV rows and headers.

JSON to SQL INSERT

Convert an array of JSON objects into SQL INSERT statements.

SQL CREATE TABLE Generator

Infer a starter table definition from a JSON example object.

SQL Reserved Words Lookup

Check whether a word is a common SQL keyword or reserved term.

Database Connection String Parser

Inspect common database URL fields while masking passwords.

Security

10 TOOLS

JWT Decoder

Decode a JWT header and payload without verifying its signature.

JWT Expiration Checker

Read a JWT exp claim and compare it with the current time.

JWT Header Decoder

Decode the protected header segment of a JWT locally.

SHA-256 Generator

Generate a SHA-256 digest from text with the Web Crypto API.

SHA-512 Generator

Generate a SHA-512 digest from text with the Web Crypto API.

Hash Generator

Generate SHA-256 or SHA-512 digests for text locally.

MD5 Generator

Calculate an MD5 digest for compatibility checks and legacy systems.

HMAC Generator

Create an HMAC-SHA-256 or HMAC-SHA-512 message authentication code.

Password Generator

Generate random passwords with selectable character groups.

Basic Auth Header Generator

Create an HTTP Basic Authorization header locally from a username and password.

API & OpenAPI

20 TOOLS

OpenAPI Validator

Check OpenAPI documents for valid YAML or JSON and essential structure.

OpenAPI Formatter

Format OpenAPI documents as readable JSON or YAML.

OpenAPI YAML to JSON

Convert an OpenAPI YAML document into formatted JSON.

OpenAPI JSON to YAML

Convert an OpenAPI JSON document into readable YAML.

OpenAPI Diff

Compare endpoint and operation changes between two OpenAPI documents.

OpenAPI Breaking Change Checker

Flag removed operations and newly required request fields between API specs.

OpenAPI Endpoint Extractor

List methods, paths, summaries, and operation IDs from an OpenAPI document.

OpenAPI Schema Viewer

Inspect component schemas, fields, required values, and references.

OpenAPI cURL Generator

Generate a cURL example for a selected method and path in an OpenAPI spec.

HTTP Header Builder

Validate and normalize an HTTP header block for a request.

OpenAPI Schema Diff

Compare named component schemas between two OpenAPI documents.

OpenAPI Security Checker

Review declared security requirements, unused schemes, and HTTP server URLs.

OpenAPI Parameter Viewer

List path and operation parameters with location, required state, and basic type.

OpenAPI Response Viewer

Summarize response status codes, descriptions, and content types per operation.

OpenAPI Example Generator

Create a sample JSON value from a named component schema and local references.

OpenAPI Operation ID Checker

Find missing or duplicate operationId values across OpenAPI paths.

OpenAPI Deprecated API Finder

Find operations, parameters, and component schemas marked deprecated.

OpenAPI Version Checker

Identify an OpenAPI version and report whether this toolset checks its version family.

OpenAPI Tag Index

Group operations by their OpenAPI tags and show each tag's description.

OpenAPI Migration Report

Summarize endpoint, component schema, version, and server URL changes between two specifications.

Frontend

10 TOOLS

CSS Minifier

Remove comments and formatting whitespace from CSS.

CSS Beautifier

Add readable indentation and line breaks to compact CSS.

JavaScript Minifier

Compact JavaScript by removing ordinary comments and extra whitespace.

JavaScript Beautifier

Add indentation and line breaks to JavaScript source text.

HTML Formatter

Format HTML snippets with indentation for easier reading.

HTML Minifier

Remove HTML comments and collapse unnecessary whitespace.

CSS Gradient Generator

Create a two-color linear-gradient CSS declaration.

Box Shadow Generator

Build a CSS box-shadow declaration from numeric controls.

Color Converter

Convert common HEX, RGB, and HSL color values between formats.

HEX / RGB / HSL Converter

Convert HEX, RGB, and HSL notation into a consistent set of color values.

Network & Infrastructure

10 TOOLS

CIDR Calculator

Calculate IPv4 network boundaries, netmask, broadcast, and usable host count.

Subnet Calculator

Divide an IPv4 network into equal-sized subnets with a target prefix.

IP Address Converter

Convert IPv4 between dotted decimal, unsigned integer, hexadecimal, and binary forms.

IPv4 to Binary Converter

Convert an IPv4 address to four 8-bit binary octets and back.

Port Lookup

Look up common TCP and UDP port numbers and service names from a local reference list.

DNS Record Parser

Parse pasted DNS zone or dig-style record lines into owner, TTL, type, and value fields.

Docker Memory Converter

Convert common memory sizes into bytes and Docker Compose memory values.

Kubernetes Resource Converter

Inspect Kubernetes CPU quantities in cores and millicores and memory quantities in bytes.

Byte / KB / MB / GB Converter

Convert a byte quantity between decimal and binary storage units.

Bandwidth Calculator

Estimate ideal transfer time from data size and network bandwidth.

Git & DevOps

10 TOOLS

Git Command Generator

Generate common Git commands for review without running them.

Gitignore Generator

Combine common .gitignore entries for selected development platforms.

Conventional Commit Generator

Build a commit message with a standard type, optional scope, and description.

Semantic Version Calculator

Calculate the next major, minor, or patch version from a semantic version.

Version Compare Tool

Compare two semantic versions, including common prerelease ordering.

Docker Compose Validator

Parse a Compose YAML file and check basic service structure locally.

Docker Environment Variable Parser

Parse .env key/value lines into readable JSON for container configuration review.

GitHub Actions YAML Validator

Parse workflow YAML and check basic jobs, runner, and step structure.

Environment Variable Formatter

Normalize .env key/value lines while preserving their order.

.env to JSON Converter

Convert basic .env key/value entries into a JSON object.

Code Utilities

10 TOOLS

JavaScript Object to JSON

Convert a JavaScript-style object literal into valid, formatted JSON.

TypeScript Interface Generator

Infer TypeScript interfaces and nested object types from a JSON sample.

JSON to TypeScript

Convert a JSON object sample into a TypeScript type alias with inline nested types.

JSON to Python Dataclass

Generate Python dataclass definitions from a JSON object sample.

JSON to Pydantic Model

Generate a basic Pydantic BaseModel from a JSON object sample.

JSON to Go Struct

Generate a Go struct with JSON tags from an object sample.

JSON to Java POJO

Generate a Java POJO with fields and basic getters and setters from JSON.

JSON to C# Class

Generate a basic C# class with properties inferred from JSON values.

Lorem Ipsum Generator

Generate placeholder paragraphs with a selectable paragraph and word count.