24 tools

Developer Tools

Complete API, token, data, debugging, and developer workflows.

Complete developer workflows, not disconnected steps

Developer Tools on Haivix combines focused utilities with full workflows for API requests, token debugging, structured data, encoding, and code preparation. Use one workspace to move from input through validation and inspection to an output you can test, copy, or export.

The API Request Studio covers request composition, authorization, response inspection, and code generation. JWT Studio covers decoding, claim timing, local HMAC signing, and signature verification. Every browser-first tool explains where processing happens and what leaves your device.

Start with a workflow

Tip: Use API Request Studio to reproduce an endpoint, then open JWT Studio when you need to inspect or verify the bearer token used by that request.

JSON to CSV Converter

Turn JSON arrays into safe, spreadsheet-ready CSV.

Cron Expression Generator

Build cron schedules and preview upcoming runs.

JSON Formatter

Format, validate, minify, and view JSON.

SQL Formatter

Beautify SQL for PostgreSQL, MySQL, SQLite, and T-SQL.

YAML, TOML & JSON Converter

Convert and validate YAML, TOML, and JSON with error positions.

API Request Studio

Build, send, inspect, and export HTTP API requests.

Password Generator

Generate strong, random passwords.

Base64 Encoder

Encode and decode Base64 text and files.

UUID Generator

Generate random UUID v4 identifiers.

Hash Generator

MD5, SHA, SHA-3, BLAKE, RIPEMD, CRC, and more.

Timestamp Converter

Convert Unix timestamps to dates.

URL Encoder

Encode and decode URL strings.

Regex Tester

Test regular expressions against text.

Markdown Preview

Write Markdown with live HTML preview.

JWT Studio

Decode, inspect, sign, and verify JSON Web Tokens.

Hex Encoder/Decoder

Encode and decode hex text and files.

Base32 Encoder/Decoder

Encode and decode Base32 text and files.

Base58 Encoder/Decoder

Encode and decode Base58 text and files.

HTML Encoder/Decoder

Encode and decode HTML entities.

XML Formatter

Format, validate, and minify XML.

Syntax Highlighter

Highlight code in many programming languages.

JavaScript to TypeScript Converter

Create a conservative TypeScript starter from JavaScript.

Typography Scale Maker

Build, preview, and export a modular type scale.

Color Contrast Checker

Check color pairs against WCAG AA and AAA contrast.