Free tools
Free tools for architects and engineering teams
Practical checks and decision aids built from the articles on this site. They run entirely in your browser: nothing you paste or answer is uploaded.
- Cron Expression Builder & ExplainerTurn any cron expression into plain English, see the next run times, and get the matching Laravel and Symfony scheduler code. Presets for the most common schedules.Open the tool →
- JWT Decoder & VerifierDecode a JSON Web Token’s header and claims, check expiry and common security mistakes, and verify HS256 or RS256 signatures. Runs in your browser; tokens never leave the page.Open the tool →
- JSON to PHP Class ConverterPaste JSON and get typed PHP 8 readonly classes (DTOs) with nested classes, typed arrays and a fromArray() factory, or a PHP array literal.Open the tool →
- PHP Date Format Builder & Timestamp ConverterBuild PHP date() format strings by clicking, preview them live in any time zone, and convert Unix timestamps to dates and back, with copy-ready PHP code.Open the tool →
- LLM Token CounterCount tokens exactly for GPT-4o and other OpenAI models, see how text is split, check it against a context window and estimate the cost of a call with your own prices.Open the tool →
- php.ini Security & Performance CheckerPaste your php.ini or php -i output and get a graded report of risky and slow settings, with the exact lines to fix them. Runs in your browser; nothing is uploaded.Open the tool →
- MCP vs REST Decision HelperAnswer six questions about who uses your interface and how, and get a reasoned recommendation: a REST API, an MCP server, or MCP in front of REST.Open the tool →
- AI Adoption Readiness AssessmentA ten-question self-assessment for engineering and business leaders. Score your strategy, data, platform, people and governance, and get the next steps for your weakest areas.Open the tool →