AST Visualizer
Understand Complex Python Codebases in Seconds
AST Visualizer launched on February 17, 2026 with 7 votes, #1,386 of 16,628 launches that month and more than 90% of that year's launches.
What it does
Tired of feeling lost in huge codebases? AST Visualizer gives you a deterministic bird’s eye view of your code. Our dependency graph shows which files actually matter, where complexity (aka spaghetti code) hides, and makes spotting circular imports effortless. The maintainability score boils technical debt down to a single number..so you know exactly how bad things are. For vibecoders, AST Visualizer helps keep your LLM from turning your repo into a spaghetti factory
Understand any codebase in minutes. Creview visualizes code structure, dependencies, and complexity across Python, JavaScript, TypeScript, and more — no setup required.
Conquer technical debt and maintenance nightmares—whether the code was written by you, a coworker, or an LLM. Ready to analyze your next project? Python, JS, TS, HTML and more supported. Untangle legacy spaghetti and catch circular dependencies before they cause outages. High-fidelity Dependency Graphs mapping module imports across Python, JS, and TS. Identify "maintenance nightmares" at a glance and prioritize refactoring based on objective metrics. Automated McCabe Cyclomatic Complexity analysis calculated for every function in your project. Understand any repository in minutes without reading thousands of lines of code. Works by generating high-fidelity maps of your codebase via…from creview.io
Does a similar job
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A Satellite View for Python CodeFeb 2026 · ast-visualizer.com · ▲7Hi HN, I built ast-visualizer.com because I wanted a way to visualize the architecture/structure of a Python repo before dived into the code. Most tools tell you what the code does; I wanted to see how it's built. The Problem: Onboarding onto a large codebase is a nightmare. LLMs help with single functions, but they struggle to show you the "God Objects," circular dependencies, or high-complexity hotspots across 50+ files. What it does: Dependency Graph: Visualizes imports and file complexity to find architectural bottlenecks. Radial AST Heatmaps: Maps individual files and color-codes…
Visualizing a Codebase2021 · octo.github.com · ▲283I explored an alternative way to view codebases to the typical folder/file list, showing a bird's-eye-view of its structure. https://octo.github.com/projects/repo-visualization
Visualize Data Structures in VS Code2020 · github.com · ▲509An extension for VS Code that visualizes data during debugging. - vscode-debug-visualizer/extension at master · hediet/vscode-debug-visualizer


Fully client-side GPT2 prediction visualizer2023 · perplexity.vercel.app · ▲153Hi HN! I've found this visualization tool immensely helpful over the years for getting an intuition for how an LLM "sees" some piece of text, and with a bit of elbow grease decided to move all compute to client side so I could make it publicly available. I've found it particularly useful for - Understanding exactly how repetition and patterns affect a small LM's ability to predict correctly - Understanding different tokenization patterns and how it affects model output - Getting a general sense of how "hard" different prediction tasks are for GPT-style models Known problems (that I probably…
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