Articles, tutorials, and updates about developer tools and productivity.
Master WCAG color contrast requirements: understand AA (4.5:1) and AAA (7:1) ratios, test accessibility with contrast checkers, fix common failures, and design inclusive interfaces for all users.
Learn advanced GZip compression settings: compression levels (1-9), Deflate vs Zlib formats, streaming compression, and when to use server-side processing for optimal performance and file size.
Learn when to use server-side hash calculation for large files, bulk operations, and enterprise workflows. Understand MD5, SHA-256, SHA-512, and BLAKE2 performance for file integrity verification.
Learn about AVIF and HEIF image formats: compression efficiency, browser support, conversion workflows, and when to use modern image formats over JPEG and PNG for web performance.
Learn enterprise XML schema validation with XSD. Understand namespace handling, schema compliance, batch validation, and how to validate XML against XSD schemas for APIs and configurations.
Discover DevToys Web - a complete suite of free web developer tools accessible directly in your browser. 30+ utilities including JSON formatter, Base64 encoder, UUID generator, regex tester & more. No installation, works offline, privacy-focused.
Dev Toys is a swiss army knife for developers — 30+ free tools for formatting JSON, comparing text, testing regexp, encoding data, and more. No installation, runs in your browser, works offline.
Complete web data encoding workflow: URL encoding for query parameters, HTML entity escaping for display, and Quoted-Printable for email. Practical guide for web developers handling special characters.
Complete configuration management workflow: convert between YAML and JSON formats, validate syntax, and compare configuration versions to track changes. Practical guide for DevOps and developers.
Step-by-step workflow for debugging APIs: format messy JSON responses, extract data with JSONPath queries, and export results to CSV for analysis. Practical guide with real API examples.
Learn why JSON parsers reject trailing commas and comments, how to identify non-standard JSON in the wild, and common parsing issues when working with configuration files and APIs.
Learn the critical differences between hashing (MD5, SHA256), encryption, and password hashing. Understand when to use each, common mistakes, and best practices for file integrity and security.
Learn practical Base64 usage: data URLs for images, MIME type prefixes, embedding files in HTML/CSS, PDF encoding, and debugging common Base64 decode errors.
Learn how XML converts to JSON and back. Understand attribute mapping, text content (#text), array detection, namespaces, and how to predict XML↔JSON conversion output.
Learn about YAML implicit type conversion pitfalls. Understand how YAML parsers interpret yes/no, null values, leading zeros, and when to use quotes to prevent unexpected type coercion.
Learn the difference between well-formed XML and schema-valid XML. Understand what XML validators check, common validation errors, and how to validate XML against XSD schemas.
Learn how to decode X.509 certificates: Subject Alternative Names, Extended Key Usage, fingerprints, PEM vs DER formats. Understand certificate fields and validate SSL/TLS certificates.
Learn the differences between GZip, Deflate, and Zlib compression formats. Understand format headers, when tools fail, and how to choose the right compression format for your data.
Debug timestamp conversion issues between seconds and milliseconds. Learn Unix timestamp formats, timezone handling, and common pitfalls when working with epoch time in APIs.
Learn why JSON to CSV conversions often produce unexpected results. Covers nested objects, arrays, missing headers, and flattening strategies with practical solutions.
