Chmod Calculator
Convert file permissions between octal, symbolic and checkboxes.
Developer Tools
Format, encode and hash without leaving the tab.
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Cubic Bezier Generator
Draw an easing curve and see it against the standard ones.
curl to Code Converter
Turn a curl command into working fetch, axios, Python, PHP, Go or Ruby.
CSP Generator
Build a Content-Security-Policy header directive by directive.
UUID Decoder
Identify a UUID's version and variant, and extract its timestamp.
ASCII Table
The full ASCII table with decimal, hex, octal, binary and HTML entities.
JSON to Query String
Serialise a JSON object into a percent-encoded URL query string.
Bitwise Calculator
AND, OR, XOR, shifts and rotates, at 8 to 64 bits, shown in binary.
CSS Grid Generator
Draw a grid layout and get the CSS, including named template areas.
My User Agent
See your own user agent string and what a server can tell from it.
Hex to Base64
Convert a hexadecimal string to Base64, standard or URL-safe.
JSON to ENV
Flatten a JSON config into .env lines with correct quoting and naming.
Base64 Encoder & Decoder
Convert text to Base64 and back, with full Unicode support.
Screen Resolution Checker
Your screen size, viewport, pixel ratio and which breakpoint is active.
GitHub Actions Generator
Generate a CI workflow with caching, a version matrix and the right permissions.
Luhn Validator
Check any number against the Luhn checksum and see the working.
JavaScript Formatter
Re-indent JavaScript, with strings and regular expressions left alone.
Media Query Generator
Build media queries with framework breakpoints and modern features.
CSS Filter Generator
Stack CSS filters on a real image and copy the declaration.
Base32 Encoder & Decoder
Encode and decode Base32, including the Crockford and hex variants.
TOML to JSON
Convert a TOML config to JSON, with tables and arrays of tables resolved.
XML to JSON
Convert XML into clean JSON, with attributes and text handled predictably.
JSON to Java Class
Generate Java POJOs or records with Jackson annotations from JSON.
JSON Flattener
Collapse nested JSON into one flat level of dot-notation or bracket keys.
JSON Diff
Compare two JSON documents structurally and see exactly which paths changed.
HTTP Status Codes
Every HTTP status code, searchable, with what it actually means.
JSON to YAML
Convert JSON to clean, correctly quoted YAML in one step.
XML Validator
Check XML is well-formed and find the exact tag that breaks it.
Email Format Validator
Check an email address against the rules that actually matter, and see why.
Flexbox Generator
Learn and generate flexbox layouts with a live, interactive preview.
Nano ID Generator
Generate Nano IDs — shorter than a UUID, and URL-safe by design.
Random String Generator
Generate cryptographically random strings over any alphabet you choose.
TSV to JSON
Convert tab-separated data — or a spreadsheet paste — straight into JSON.
SQL Formatter
Re-indent a SQL query into readable clauses, joins and conditions.
JSON to Rust Struct
Generate serde-ready Rust structs from a sample JSON document.
JSON to C# Class
Generate C# classes with System.Text.Json attributes from a JSON sample.
JSON Lines Converter
Convert between JSON arrays and NDJSON, one compact document per line.
JSON Schema Generator
Infer a draft-07 JSON Schema from a sample document in one step.
Text Shadow Generator
Build text shadows, outlines and glows with a live preview.
UUID v7 Generator
Generate time-ordered UUID v7 identifiers that index cleanly.
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