Developer Tools

Format code, inspect structured data, encode tokens and test developer snippets locally.

Developer tools

42 Tools

Text to HTML List

Text to HTML List: Turn nonempty lines into escaped HTML list items.

Markdown Link Builder

Markdown Link Builder: Generate a Markdown link with escaped label brackets and encoded URL spaces.

CSV to TSV

CSV to TSV: Convert CSV separators to tabs with quoting for tabs and embedded newlines.

TSV to CSV

TSV to CSV: Parse tab-separated cells and serialize them as comma-separated CSV.

Flatten JSON

Flatten JSON: Flatten nested values into JSON Pointer paths, escaping slash and tilde in keys.

JSON Pointer Reader

JSON Pointer Reader: Resolve an RFC 6901 JSON Pointer through an object or array.

JSON Array Deduplicator

JSON Array Deduplicator: Remove repeated JSON array values using canonical object-key ordering.

Sort JSON Keys

Sort JSON Keys: Recursively alphabetize object keys while keeping array order unchanged.

Merge JSON Objects

Merge JSON Objects: Shallow-merge two JSON objects with second-object values taking precedence.

Sort JSON Object Array

Sort JSON Object Array: Sort an array of JSON objects by a scalar property using numeric-aware comparison.

HTTP Header Parser

HTTP Header Parser: Split HTTP-style header lines at the first colon and preserve repeated names.

Query String Parser

Query String Parser: Decode URL query pairs into arrays so repeated parameter names are retained.

URL Domain Extractor

URL Domain Extractor: Extract unique hostnames from complete HTTP URLs without making network requests.

Robots.txt Generator

Robots.txt Generator: Create a wildcard robots group and an absolute sitemap reference.

XML Sitemap Generator

XML Sitemap Generator: Generate sitemap XML for unique absolute HTTP page URLs.

Meta Tag Generator

Meta Tag Generator: Generate escaped title, description, canonical and Open Graph metadata.

CSS Triangle Generator

CSS Triangle Generator: Build a zero-size CSS triangle using transparent borders and one colored edge.

JSON Compare

Compare JSON values by structure and report added, removed and changed paths.

JSON Key Extractor

List nested JSON Pointer paths and value types, or unique property names.

Text to ASCII

Convert standard ASCII text into decimal or hexadecimal character codes.

ASCII to Text

Decode decimal or hexadecimal ASCII codes into text.

Base64URL Encoder

Encode Unicode text as URL-safe Base64 with optional padding.

Base64URL Decoder

Decode padded or unpadded URL-safe Base64 into UTF-8 text.

ROT13 Translator

Encode or decode ROT13 while preserving capitalization and non-Latin text.

Word Frequency Counter

Count repeated words with case handling, custom exclusions and percentage shares.

CSS Gradient Generator

Create two-color linear or radial gradients with a preview and copyable CSS.

CSS Box Shadow Generator

Preview a box shadow and generate CSS with offset, blur, spread and opacity controls.

CSS Border Radius Generator

Set four independent corners and preview the CSS border-radius declaration.

CSS Clamp Calculator

Calculate fluid font-size CSS between two viewport widths with px or rem bounds.

JSON to YAML Converter

Convert JSON data into clean, indented YAML syntax.

YAML to JSON Converter

Convert YAML configuration into formatted or compact JSON.

Markdown to HTML Converter

Convert Markdown text into semantic HTML markup with headings, code blocks and tables.

HTML to Markdown Converter

Convert HTML markup into clean, readable Markdown syntax.

SQL Formatter & Beautifier

Format messy SQL queries with clean indentation and uppercase keywords.

XML Formatter & Beautifier

Format raw or minified XML with structured hierarchy and indentation.

CSS Minifier

Compress CSS stylesheets by removing whitespace, comments and redundant units.

Cron Expression Parser

Explain cron schedule syntax in plain English and calculate upcoming run times.

Regex Tester

Test regular expressions against sample text with live match highlighting and capture groups.

CSS Unit Converter

Convert between CSS length units like px, rem, em, vw, vh and pt.

HTML Prettifier

Format and indent messy HTML code with proper nesting and readability.

JavaScript Minifier

Compress JavaScript code by removing whitespace, comments and reducing file size.

Enhanced Diff Checker

Compare two text blocks with detailed side-by-side analysis including word-level changes.