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Developer Articles - Page 3

Hands-on articles on developer tools, implementation notes, technical deep dives, and everyday debugging and data conversion workflows.

Introduction
DevToolKits.app

JWT Security Deep Dive: Attack Vectors, JWKS, and Production Best Practices

A thorough guide to JWT security — covering the alg:none attack, algorithm confusion, key management with JWKS, token revocation strategies, and a production-ready security checklist.

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DevToolKits.app

Generating and Reading QR Codes: How They Work and How to Use Them

Explore the basics of QR codes, secure methods for generating and reading them, and practical use cases in development.

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DevToolKits.app

Practical Regex Recipes: Copy-Paste Search and Replace Patterns

Ready-to-use regular expressions for emails, URLs, dates, whitespace cleanup, and more—each with what it matches—plus everyday text-processing tips.

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URL Mechanics and Parameter Analysis: From Encoding to JSON Conversion

Explore the structure of URLs, the necessity of Percent-Encoding, and efficient ways to handle complex query parameters in web development.

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DevToolKits.app

Chmod Calculator: Visually Calculate and Verify Linux Permissions

A visual tool to manage and verify permission settings like chmod 755 or rwxr-xr-x effortlessly.

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DevToolKits.app

cURL Converter: Instantly Transform cURL into Your Favorite Programming Language

Convert cURL commands into Python, JavaScript, Go, Rust and more. Covers why shell parsing (not regex) is required to convert curl reliably, the supported languages, and what to check before shipping the generated code.

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DevToolKits.app

Generate a Full Set of Favicons from a Single Image—Right in Your Browser

Introducing a tool that lets you batch-generate favicon.ico, Apple Touch Icons, and PNGs of various resolutions entirely within your browser.

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DevToolKits.app

SQL Formatter: Making Queries Readable, and Why Dialect Selection Matters

Format messy SQL pulled from logs or ORMs into readable queries. Covers the technical reasons dialect selection (PostgreSQL/MySQL/BigQuery) changes formatting output, and why formatting doubles as a syntax check.

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Drastically Simplify Markdown Table Creation! Visual Editor Techniques

'Writing tables in Markdown is such a chore...' If you've ever felt that, this guide is for you. Learn how to increase document efficiency using a visual editor for intuitive table creation and editing.

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DevToolKits.app

Mastering Cron Expressions: The 5 Fields and Special Characters with Examples

Understand Cron's 5 fields, special characters (* , - / ? L W #), common scheduling examples, and the UTC/timezone pitfalls—all explained with real expressions.

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DevToolKits.app

Visualizing GitHub Actions Workflows: Understanding Complex Pipelines

Visualize GitHub Actions job dependencies (needs) as a Mermaid graph. Covers how the needs field converts to arrows, the string-vs-array quirk, fan-out/fan-in/matrix patterns, and how to spot circular dependencies.

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Base64, Base58, and Base32 Explained: When and How to Use Each Encoding

Understand how Base64 encoding works at the bit level, why it increases data size by 33%, the differences between Base64, Base64Url, Base58, and Base32, and practical use cases for each.

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