A small tool with one job: make any piece of code understandable.
CodeLens AI started from a simple, everyday frustration — staring at a snippet of code with no idea what it does or why it's broken. Copied from a tutorial, inherited from a teammate, or pulled from an old project: unfamiliar code slows everyone down, from students to working developers.
This site exists to fix that. Paste a snippet into the Code Tool and get three things back: the language it's written in, a plain-English explanation of what it does, and — where something's broken — a corrected version with the fix explained.
When you paste a snippet, the tool first runs a quick pattern check in your browser to identify the language — looking at things like tag structure, keywords, and punctuation. That detection happens instantly, with no server round trip.
When you click "Explain" or "Fix & explain," the snippet is sent to an AI backend that reads the code the way an experienced developer would, then returns a structured explanation and, when needed, a working fix.
CodeLens AI handles the languages most people run into day to day: HTML, CSS, JavaScript, PHP, Python, SQL, Java, and C++, with reasonable results on most other C-style or script-based languages too.
CodeLens AI is built and maintained by Professor Shahid Ali, a web and AI tool developer focused on building small, practical developer tools.