Developer Tools

Platform dedicated to providing useful tools for data generation and formatting, assisting developers and students in their projects and tests.

31 available tools · Ctrl K to search anywhere

Generators

Generate DocumentsGenerate valid CPF, CNPJ and RG for testing QR Code GeneratorCreate QR Codes from links and text Password GeneratorGenerate strong, secure passwords WhatsApp Link GeneratorCreate ready-to-send WhatsApp links Person GeneratorGenerate complete fake profiles for testing Hash GeneratorGenerate MD5, SHA1 and SHA256 hashes Generate GUIDGenerate unique GUID / UUID identifiers Lorem IpsumGenerate placeholder Lorem Ipsum text

Formatters

Format JSONFormat and validate JSON code Format XMLFormat and organize XML documents Format SQLFormat SQL queries for readability

Converters

JSON ↔ C#Convert JSON to C# classes and back XML ↔ JSONConvert between XML and JSON CSV ↔ JSONConvert between CSV and JSON JSON ↔ YAMLConvert between JSON and YAML JSON ↔ StringConvert JSON to escaped string and back Base64 ↔ FileConvert files to Base64 and back Timestamp / EpochConvert Unix timestamp to date and back Color ConverterConvert colors between HEX, RGB and HSL Number BaseConvert numbers between bases (bin, oct, dec, hex)

Encode/Decode

URL Encode/DecodeEncode and decode URLs Base64Encode and decode text in Base64 JWTDecode and inspect JWT tokens

Network

Get My IPView your public IP address

Utilities

View HTMLPreview HTML code in real time Calculate OvertimeCalculate the value of your overtime String UtilitiesTransform text: case, shuffle and more Regex TesterTest regular expressions in real time Text DiffCompare two texts line by line Cron ExplainerUnderstand a cron expression field by field Markdown PreviewWrite Markdown and see it rendered live

What is GeraDev?

GeraDev brings together dozens of free online tools for everyday development work: document, password and QR code generators; JSON, XML and SQL formatters; converters like CSV ↔ JSON, JSON ↔ YAML and number base; Base64, URL and JWT encoders; and utilities such as a regex tester, text diff and cron explainer.

Every tool is free and requires no sign-up. Most process data entirely in your browser, so what you paste or generate is never sent to a server — good for privacy and speed. The interface is available in English and Portuguese, with light and dark themes.

GeraDev brings together the tools we use ourselves every day, with the idea of centralizing everything in one place instead of jumping between different sites. The project is maintained by Brazilian developers and grows from real usage and suggestions — if a tool you need is missing, reach out through the contact page.