Articles
Guides, explanations and practical ideas to help you get more from developer tools.
- Read articleIA e integração
85 min de leituraModel Context Protocol (MCP): dos primeiros princípios à produção
Guia integral de MCP 2026 com arquitetura, primitivas, transportes, servidor Python, clientes reais, OAuth, segurança, observabilidade e produção empresarial.
- Read articleAI and integration
85 min readModel Context Protocol (MCP): From First Principles to Production
The complete MCP 2026 guide to architecture, primitives, transports, a Python server, real clients, OAuth, security, observability, and enterprise production.
- Read articleIA e integración
85 min de lecturaModel Context Protocol (MCP): de los primeros principios a la producción
Guía integral de MCP 2026 con arquitectura, primitivas, transportes, servidor Python, clientes reales, OAuth, seguridad, observabilidad y producción empresarial.
- Read articleArquitetura de software60 min de leitura
Padrões de Projeto Gang of Four (GoF) em Java: guia completo
Os 23 padrões da Gang of Four, exemplos em Java, relações com SOLID, comparações, refatoração de um checkout e quando não usar um padrão.
- Read articleSoftware architecture60 min read
Gang of Four (GoF) Design Patterns in Java: Complete Guide
All 23 Gang of Four patterns, Java examples, SOLID relationships, comparisons, an e-commerce checkout refactoring and when not to use a pattern.
- Read articleArquitectura de software60 min de lectura
Patrones de Diseño Gang of Four (GoF) en Java: guía completa
Los 23 patrones de la Gang of Four, ejemplos en Java, relaciones con SOLID, comparaciones, refactorización de un checkout y cuándo no usar un patrón.
- Read articleInteligência artificial90 min de leitura
Inteligência Artificial Generativa: guia completo
Fundamentos, arquiteturas, LLMs, RAG, IA multimodal, agentes, avaliação, segurança, governança, mercado e implementação empresarial.
- Read articleArtificial intelligence90 min read
Generative Artificial Intelligence: Comprehensive Guide
Foundations, architectures, LLMs, RAG, multimodal AI, agents, evaluation, security, governance, market, and enterprise implementation.
- Read articleInteligencia artificial90 min de lectura
Inteligencia Artificial Generativa: guía completa
Fundamentos, arquitecturas, LLM, RAG, IA multimodal, agentes, evaluación, seguridad, gobernanza, mercado e implementación empresarial.
- Read articleIA e integração75 min de leitura
O que é o Model Context Protocol (MCP)?
Guia completo sobre servidores MCP, arquitetura, ferramentas, recursos, prompts, segurança, autorização e integração com agentes de IA.
- Read articleAI and integration75 min read
What Is the Model Context Protocol (MCP)?
A complete guide to MCP servers, architecture, tools, resources, prompts, security, authorization, and AI agent integration.
- Read articleIA e integración75 min de lectura
¿Qué es el Model Context Protocol (MCP)?
Guía completa sobre servidores MCP, arquitectura, herramientas, recursos, prompts, seguridad, autorización e integración con agentes de IA.
- Read articleAbout utily.tools10 min read
What Is utily.tools?
Learn how utily.tools brings practical developer utilities together in one browser-based workspace.
- Read articleText Processing15 min read
Online Text Editors: How Text Transformation Works
Learn how online text editors normalize, split, replace, count and transform text, with technical examples and practical use cases.
- Read articleText Processing14 min read
Text Templates and Variables: A Practical Automation Guide
Understand how text templates replace variables to generate consistent messages, commands and documents, including grammar, rendering rules and examples.
- Read articleText Processing16 min read
Text Diff Explained: Algorithms, Changes and Real Uses
Learn how text diff tools detect additions, removals and unchanged sequences using LCS-style algorithms, with technical examples.
- Read articleData Encoding15 min read
Base64 Encoding and Decoding: How It Really Works
Understand Base64 encoding, its 24-bit conversion process, padding, UTF-8 handling and practical uses in APIs, email and data URLs.
- Read articleWeb Standards16 min read
URL Encoding Explained: Percent-Encoding in Practice
Learn how URL percent-encoding represents reserved characters and UTF-8 bytes in paths and query strings, including standards, normalization and security.
- Read articleWeb Standards19 min read
URI vs URL: The Difference Explained with Examples
Understand the difference between URI, URL and URN: RFC 3986 definitions, generic syntax, schemes, relative references and real code examples.
- Read articleAPIs22 min read
Swagger and OpenAPI: History, Versions and Technical Differences
The history of Swagger and OpenAPI, who standardizes the specification, and the technical differences between Swagger 2.0, OpenAPI 3.0 and 3.1.
- Read articleData Formats17 min read
JSON Formatting, Minification and Validation Explained
A technical guide to JSON syntax, parsing, formatting, minification and stringification for APIs, configuration and web applications.
- Read articleData Formats18 min read
How to Compare JSON and YAML Structurally
Learn how structural comparison parses JSON and YAML, walks object paths and reports missing fields and different values.
- Read articleIdentifiers18 min read
UUID v1, v4 and v7: Generation, Structure and Uses
Compare UUID v1, v4 and v7, understand their bit layout, randomness, ordering and practical use in distributed systems.
- Read articleDate and Time16 min read
Unix Timestamps: Epoch Time, Precision and Time Zones
Understand Unix timestamps in seconds and milliseconds, UTC conversion, time zones, precision and practical application behavior.
- Read articleTesting Data18 min read
CPF and CNPJ Check Digits for Software Testing
Learn how CPF and CNPJ check digits are calculated, why valid test documents matter and how to use generated values responsibly.
- Read articleApplication Security25 min read
JWT Explained: Structure, Claims, Signing and Validation
A technical guide to JSON Web Tokens, Base64url segments, registered claims, signatures, key formats and secure validation.
- Read articleApplication Security22 min read
JWE Explained: Encrypted Tokens and Compact Serialization
Understand JSON Web Encryption, key management algorithms, authenticated content encryption and the five compact JWE segments.
- Read articleCryptography19 min read
Cryptographic Hash Functions: MD5, SHA-1 and SHA-2
Learn how cryptographic hashes process data, which security properties matter and when to use SHA-256, SHA-384 or SHA-512.
- Read articleCryptography17 min read
HMAC Explained: Authenticating Messages with a Secret Key
Understand HMAC construction, secret-key management, canonical messages and signature verification for APIs and webhooks.
- Read articleApplication Security18 min read
Secure Password Generation: Entropy, Randomness and Policy
Learn how password generators use cryptographic randomness, character pools and entropy, and how to choose practical password policies.
- Read articlePKI and Certificates20 min read
How to Read an X.509 Certificate
Learn how X.509 certificates encode subjects, issuers, validity, public keys, extensions, signatures and fingerprints.
- Read articlePKI and Certificates20 min read
Generating RSA Keys and Self-Signed X.509 Certificates
A practical guide to RSA key generation, certificate fields, self-signing, PEM, DER, PFX, PKCS#8 and JWK exports.
- Read articlePKI and Certificates22 min read
Certificate and Private-Key Validation in Practice
Learn how to validate certificate dates, inspect formats and prove that public and private RSA keys belong to the same pair.
- Read articleAudio and Video20 min read
Silence Detection: How Automatic Pause Removal Works
How a silence cutter measures loudness in dBFS, decides which pauses are removable, and cuts video and audio in the browser without uploading anything.
- Read articleImages and OCR19 min read
OCR Explained: How Images Become Editable Text
Learn how optical character recognition preprocesses images, detects text and uses trained language models to produce editable content.
- Read articleImages and Codes20 min read
QR Codes: Encoding, Error Correction and Design
Understand QR Code structure, data modes, Reed–Solomon error correction, masking and the design rules behind reliable custom codes.
- Read articlePDF Processing18 min read
How PDF and Image Merging Works in the Browser
Learn how PDF pages are copied, images are embedded, dimensions are preserved and mixed files become one downloadable document.
- Read articlePDF Processing18 min read
PDF Splitting and Page-to-JPG Rendering Explained
Understand how PDF pages are extracted without rasterization and how content streams are rendered into JPG images and packaged downloads.
- Read articlePDF Processing17 min read
Creating a PDF from Images in the Browser
Learn how image files are decoded, ordered, embedded and scaled into PDF pages through image sampling, page geometry and compression.
- Read articleReal-Time Web20 min read
Real-Time Text Sharing with WebSockets and Channels
Learn how Socket.IO channels synchronize text, presence and short-lived history across browser screens in real time.
- Read articleNetworking32 min read
IPv4 CIDR Explained: Subnet Masks and IP Ranges
Learn IPv4 history, binary addressing, subnet masks and CIDR calculations, including network, broadcast and usable ranges for /24, /22 and other prefixes.
- Read articleAgilidade e gestão de produtos35 min de leitura
O Guia do Scrum - edição completa
Texto integral da tradução comunitária oficial do Guia do Scrum 2020 em português brasileiro, com atribuição, licença e fontes.
- Read articleAgility and product management30 min read
The Scrum Guide - Complete Edition
The complete text of the official 2020 Scrum Guide in English, including attribution, license details, and source references.
- Read articleAgilidad y gestión de productos35 min de lectura
La Guía de Scrum - edición completa
Texto íntegro de la traducción comunitaria oficial de la Guía de Scrum 2020 en español latinoamericano, con atribución, licencia y fuentes.