About DevToolbox

DevToolbox is a collection of 46+ browser-based developer utilities built by FluxWillow. Every tool runs entirely in your browser using JavaScript. No data is ever sent to a server, stored in a database, or shared with third parties.

Why we built this

Developers reach for small utility tools dozens of times a day. Format a JSON response. Decode a JWT. Test a regex. Convert a timestamp. Most tools that rank first in search results send your data to a server, show full-screen ads, or require sign-up for basic functionality. We built DevToolbox because these tasks should be instant, private, and free.

How it works

The entire application is a flat-file PHP site that serves static HTML pages. All processing happens client-side in JavaScript. There is no database, no user accounts, no analytics tracking beyond anonymous page views via Google Analytics, and no server-side processing of user input. When you paste a JWT token, JSON payload, or any other data into a tool, it stays in your browser tab.

The tools

DevToolbox covers formatters (JSON, SQL, XML, CSS, JavaScript), encoders (Base64, URL, HTML entities), converters (JSON to CSV, CSV to JSON, JSON to YAML, Markdown to HTML, number base), generators (passwords, UUIDs, QR codes, favicons, CSS gradients, box shadows, animations, flexbox layouts, grid layouts), text utilities (word counter, case converter, diff checker, string reverse, duplicate remover, word frequency), and web tools (meta tags, Open Graph tags, robots.txt, .htaccess redirects, HTTP status codes, cron expressions, chmod calculator).

About FluxWillow

FluxWillow is a software development brand founded by Manoj Kumar, a senior full-stack developer with 14 years of experience in PHP, Laravel, JavaScript, WordPress, and cloud infrastructure. FluxWillow builds developer tools, SaaS products, and client solutions. DevToolbox is one of several products under the FluxWillow umbrella.

Contact

For feedback, bug reports, or tool suggestions, reach out via fluxwillow.com.