# Here Be Tools

> Free browser-based developer tools and programming references. Tool processing runs locally. JavaScript is required for interactive tools.

## Site information

- [About and facts](https://herebetools.com/facts)
- [Topics](https://herebetools.com/topics)
- [Privacy policy](https://herebetools.com/privacy-policy)
- [Sitemap](https://herebetools.com/sitemap.xml)
- [Complete tool guide collection](https://herebetools.com/llms-full.txt)

## JSON

- [JSON Tools](https://herebetools.com/topics/json)
- [JSON Compare](https://herebetools.com/json-compare): Diff two JSON documents side by side. [Markdown](https://herebetools.com/json-compare/index.md)
- [JSON Formatter](https://herebetools.com/json-formatter): Format, validate, minify and sort JSON with tree view. [Markdown](https://herebetools.com/json-formatter/index.md)
- [JSON Schema](https://herebetools.com/json-schema): Validate JSON against a JSON Schema. [Markdown](https://herebetools.com/json-schema/index.md)
- [JSON → TypeScript](https://herebetools.com/json-to-ts): Generate TypeScript interfaces from a JSON sample. [Markdown](https://herebetools.com/json-to-ts/index.md)
- [JSON → Zod](https://herebetools.com/json-to-zod): Generate a Zod validation schema from JSON. [Markdown](https://herebetools.com/json-to-zod/index.md)
- [JSONPath Tester](https://herebetools.com/jsonpath): Test JSONPath expressions against JSON. [Markdown](https://herebetools.com/jsonpath/index.md)

## Convert

- [Convert Tools](https://herebetools.com/topics/convert)
- [JSON Lines Converter](https://herebetools.com/json-lines): Convert JSON arrays to JSON Lines (JSONL/NDJSON) and back with line-specific errors. [Markdown](https://herebetools.com/json-lines/index.md)
- [Bytes / Units](https://herebetools.com/bytes): Convert between SI and binary storage units. [Markdown](https://herebetools.com/bytes/index.md)
- [CSV ↔ JSON](https://herebetools.com/csv-json): Convert between CSV and JSON with type detection. [Markdown](https://herebetools.com/csv-json/index.md)
- [JSON → CSV](https://herebetools.com/json-to-csv): Flatten JSON arrays into CSV with configurable delimiters and headers. [Markdown](https://herebetools.com/json-to-csv/index.md)
- [JSON → XML](https://herebetools.com/json-to-xml): Convert JSON objects to formatted XML and parse XML back to JSON. [Markdown](https://herebetools.com/json-to-xml/index.md)
- [JSON → YAML](https://herebetools.com/json-to-yaml): Convert JSON to YAML format and parse YAML back to JSON with live preview. [Markdown](https://herebetools.com/json-to-yaml/index.md)
- [Markdown → HTML](https://herebetools.com/md-to-html): Convert Markdown to clean HTML output. [Markdown](https://herebetools.com/md-to-html/index.md)
- [TOML ↔ JSON](https://herebetools.com/toml): Convert TOML configuration files to JSON and back with validation. [Markdown](https://herebetools.com/toml/index.md)

## Encode

- [Encode Tools](https://herebetools.com/topics/encode)
- [Base64](https://herebetools.com/base64): Encode and decode Base64 strings and files. [Markdown](https://herebetools.com/base64/index.md)
- [Escape / Unescape](https://herebetools.com/escape): Escape and unescape HTML, JS, JSON, and URL strings. [Markdown](https://herebetools.com/escape/index.md)
- [URL Encode](https://herebetools.com/url-encode): Percent-encode and decode URLs and query strings. [Markdown](https://herebetools.com/url-encode/index.md)

## Validate

- [Validate Tools](https://herebetools.com/topics/validate)
- [Email Validator](https://herebetools.com/email-validate): Validate email address syntax and inspect components. [Markdown](https://herebetools.com/email-validate/index.md)
- [IP Inspector](https://herebetools.com/ip-inspect): Inspect IPv4/IPv6 addresses, class, CIDR range. [Markdown](https://herebetools.com/ip-inspect/index.md)
- [JWT Expiry](https://herebetools.com/jwt-expiry): Check JWT expiry, iat, and nbf time claims. [Markdown](https://herebetools.com/jwt-expiry/index.md)
- [Semver](https://herebetools.com/semver): Validate and compare semantic version strings. [Markdown](https://herebetools.com/semver/index.md)
- [URL Inspector](https://herebetools.com/url-validate): Parse and inspect URL components and query params. [Markdown](https://herebetools.com/url-validate/index.md)
- [YAML Validator](https://herebetools.com/yaml-validate): Validate YAML syntax and inspect parsed structure. [Markdown](https://herebetools.com/yaml-validate/index.md)

## Text

- [Text Tools](https://herebetools.com/topics/text)
- [Compare Two Lists](https://herebetools.com/list-compare): Find matches, differences, and unique items across two lists. [Markdown](https://herebetools.com/list-compare/index.md)
- [Case Converter](https://herebetools.com/case-convert): Convert text to camelCase, snake_case, kebab-case and more. [Markdown](https://herebetools.com/case-convert/index.md)
- [Line Tools](https://herebetools.com/line-tools): Sort, deduplicate, number, shuffle, and filter lines. [Markdown](https://herebetools.com/line-tools/index.md)
- [Slug Generator](https://herebetools.com/slug): Convert text to URL slugs, variable names, and identifiers. [Markdown](https://herebetools.com/slug/index.md)
- [String Inspector](https://herebetools.com/string-inspect): Analyze text: bytes, entropy, frequency, encoding detection. [Markdown](https://herebetools.com/string-inspect/index.md)
- [Text Diff](https://herebetools.com/text-diff): Compare two text blocks line by line. [Markdown](https://herebetools.com/text-diff/index.md)
- [Word Counter](https://herebetools.com/word-count): Count words, chars, sentences and check reading ease. [Markdown](https://herebetools.com/word-count/index.md)

## Markup

- [Markup Tools](https://herebetools.com/topics/markup)
- [HTML Formatter](https://herebetools.com/html-format): Format and minify HTML, JS, and CSS. [Markdown](https://herebetools.com/html-format/index.md)
- [Markdown Preview](https://herebetools.com/markdown): Live markdown editor with rendered HTML preview. [Markdown](https://herebetools.com/markdown/index.md)
- [Markdown Table](https://herebetools.com/markdown-table): Visual markdown table builder with CSV import. [Markdown](https://herebetools.com/markdown-table/index.md)
- [SOAP Formatter](https://herebetools.com/soap): Format and validate SOAP envelopes. [Markdown](https://herebetools.com/soap/index.md)
- [XML Formatter](https://herebetools.com/xml-format): Format and validate XML, test XPath expressions. [Markdown](https://herebetools.com/xml-format/index.md)

## Developer

- [Developer Tools](https://herebetools.com/topics/developer)
- [Chmod Calculator](https://herebetools.com/chmod): Build Unix file permission masks visually. [Markdown](https://herebetools.com/chmod/index.md)
- [Cron Parser](https://herebetools.com/cron): Parse cron expressions to plain English. [Markdown](https://herebetools.com/cron/index.md)
- [GraphQL Formatter](https://herebetools.com/graphql-format): Format, minify and analyze GraphQL queries. [Markdown](https://herebetools.com/graphql-format/index.md)
- [Hash Generator](https://herebetools.com/hash): Generate SHA-1/256/384/512 hashes. [Markdown](https://herebetools.com/hash/index.md)
- [JS Playground](https://herebetools.com/js-playground): Run and lint JavaScript in the browser with live console output. [Markdown](https://herebetools.com/js-playground/index.md)
- [Number Base](https://herebetools.com/number-base): Convert between decimal, hex, binary, octal. [Markdown](https://herebetools.com/number-base/index.md)
- [PEM Decoder](https://herebetools.com/pem): Decode X.509 certificates from PEM format. [Markdown](https://herebetools.com/pem/index.md)
- [Regex Tester](https://herebetools.com/regex): Test and debug regular expressions. [Markdown](https://herebetools.com/regex/index.md)
- [Robots.txt](https://herebetools.com/robots-txt): Generate and analyze robots.txt files. [Markdown](https://herebetools.com/robots-txt/index.md)
- [SQL Formatter](https://herebetools.com/sql-format): Format and beautify SQL queries. [Markdown](https://herebetools.com/sql-format/index.md)
- [Timestamp](https://herebetools.com/timestamp): Convert Unix timestamps to human-readable dates with timezone support. [Markdown](https://herebetools.com/timestamp/index.md)
- [Unicode Inspector](https://herebetools.com/unicode): Analyze Unicode characters and code points. [Markdown](https://herebetools.com/unicode/index.md)
- [UUID Generator](https://herebetools.com/uuid): Generate v4 UUIDs in bulk and copy them instantly. [Markdown](https://herebetools.com/uuid/index.md)

## HTTP & Auth

- [HTTP & Auth Tools](https://herebetools.com/topics/http-and-auth)
- [Query String Builder](https://herebetools.com/query-builder): Build and edit URL query parameters with encoding and duplicate-key support. [Markdown](https://herebetools.com/query-builder/index.md)
- [Cookie Parser](https://herebetools.com/cookie): Parse and analyze Set-Cookie and Cookie headers. [Markdown](https://herebetools.com/cookie/index.md)
- [cURL Converter](https://herebetools.com/curl): Convert cURL to fetch, axios, or Python. [Markdown](https://herebetools.com/curl/index.md)
- [.env Parser](https://herebetools.com/dotenv): Parse .env files with type detection and export options. [Markdown](https://herebetools.com/dotenv/index.md)
- [Email Auth Tools](https://herebetools.com/email-auth): Generate and analyze SPF and DMARC DNS records for email authentication. [Markdown](https://herebetools.com/email-auth/index.md)
- [Email Headers](https://herebetools.com/email-headers): Parse and analyze raw email headers, authentication results and routing. [Markdown](https://herebetools.com/email-headers/index.md)
- [HTTP Headers](https://herebetools.com/http-headers): Analyze HTTP response headers with security scoring. [Markdown](https://herebetools.com/http-headers/index.md)
- [HTTP Status Codes](https://herebetools.com/http-status): Complete reference for all HTTP status codes. [Markdown](https://herebetools.com/http-status/index.md)
- [JWT Decoder](https://herebetools.com/jwt): Decode and inspect JWT tokens. [Markdown](https://herebetools.com/jwt/index.md)
- [JWT Builder](https://herebetools.com/jwt-builder): Build and sign JWT tokens in the browser. [Markdown](https://herebetools.com/jwt-builder/index.md)
- [User Agent Parser](https://herebetools.com/useragent): Detect browser, OS and device from User Agent strings. [Markdown](https://herebetools.com/useragent/index.md)

## Utilities

- [Utilities Tools](https://herebetools.com/topics/utilities)
- [Color Converter](https://herebetools.com/color): Convert between HEX, RGB, HSL, HSV, CSS. [Markdown](https://herebetools.com/color/index.md)
- [CSV Tools](https://herebetools.com/csv-tools): Validate, reformat, and compare CSV files — delimiter, qualifier, sort, diff. [Markdown](https://herebetools.com/csv-tools/index.md)
- [CSV Viewer](https://herebetools.com/csv-viewer): Render CSV as a sortable, filterable table. [Markdown](https://herebetools.com/csv-viewer/index.md)
- [Image → Base64](https://herebetools.com/image-base64): Convert images to Base64/Data URIs — file never leaves your browser. [Markdown](https://herebetools.com/image-base64/index.md)
- [JS / CSS Minifier](https://herebetools.com/js-minify): Minify and compress JavaScript and CSS to reduce bundle size. [Markdown](https://herebetools.com/js-minify/index.md)
- [Lorem Ipsum](https://herebetools.com/lorem): Generate lorem ipsum placeholder text. [Markdown](https://herebetools.com/lorem/index.md)
- [Password Generator](https://herebetools.com/password): Generate strong passphrases (XKCD/NIST) or traditional passwords. [Markdown](https://herebetools.com/password/index.md)

## Reference

- [Reference Tools](https://herebetools.com/topics/reference)
- [HTML Reference](https://herebetools.com/ref-html): Quick reference for HTML elements, attributes and semantic structure. [Markdown](https://herebetools.com/ref-html/index.md)
- [CSS Reference](https://herebetools.com/ref-css): Quick reference for CSS selectors, flexbox, grid, and properties. [Markdown](https://herebetools.com/ref-css/index.md)
- [JavaScript Reference](https://herebetools.com/ref-javascript): Quick reference for JavaScript syntax, arrays, async and ES2022+. [Markdown](https://herebetools.com/ref-javascript/index.md)
- [PHP Reference](https://herebetools.com/ref-php): Quick reference for PHP syntax, functions, OOP and superglobals. [Markdown](https://herebetools.com/ref-php/index.md)
- [Python Reference](https://herebetools.com/ref-python): Quick reference for Python syntax, data types, comprehensions and stdlib. [Markdown](https://herebetools.com/ref-python/index.md)
- [PowerShell Reference](https://herebetools.com/ref-powershell): Quick reference for PowerShell cmdlets, pipeline and scripting patterns. [Markdown](https://herebetools.com/ref-powershell/index.md)
- [Bootstrap Reference](https://herebetools.com/ref-bootstrap): Quick reference for Bootstrap 5 grid, utilities, components and classes. [Markdown](https://herebetools.com/ref-bootstrap/index.md)