staruwos

staruwos / structviz

Public

Visualize C struct memory layouts, padding, and offsets – interactive web tool.

staruwos.github.iostructviz alignment c memory-layout struct tool
10
0
100% credibility
Found Mar 28, 2026 at 10 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
JavaScript
AI Summary

A browser tool that creates colorful visual maps of how C data structures are organized in memory, revealing hidden padding and alignments for different systems.

How It Works

1
🔍 Discover Struct Visualizer

While learning about C programming, you find this handy tool that shows how data structures fit into memory.

2
🌐 Visit the Live Page

Head to the ready-to-go webpage where you can try it right away without any setup.

3
📝 Enter Your Struct

Paste in an example data structure code or type your own into the simple text box.

4
⚙️ Pick System Type

Choose the kind of computer system from a easy dropdown list to match your needs.

5
✨ Click to See Magic

Tap the button and instantly get a colorful map of how everything lines up in memory.

6
👀 Hover for Details

Move your mouse over the blocks to pop up info on each piece and any spacing added.

✅ Master Data Layout

You now perfectly understand how your structures are arranged and why it saves time and space.

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Star Growth

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AI-Generated Review

What is structviz?

Structviz is a JavaScript-based web tool that lets you paste C struct definitions and instantly visualize their memory layouts, including padding, offsets, and sizes across architectures like LP64 or ILP32. It solves the headache of mentally calculating alignment rules or running compilers just to check struct padding—drop in code with nested structs, arrays, or function pointers, hit go, and get a color-coded byte grid with hover tooltips. Live demo at staruwos.github.io/structviz makes it dead simple to experiment without installs.

Why is it gaining traction?

It stands out by handling real-world C quirks like fast-width types, ptrdiff_t, and cc65 targets interactively, unlike static diagrams or verbose compiler outputs. Devs dig the visual punch over alternatives like pymatgen visualize structure for crystals or tools to visualize json structure—here, you see exact byte-level padding at a glance, perfect for spotting waste without digging into visualize code structure debuggers. The browser-only setup hooks low-level folks tired of setup overhead.

Who should use this?

Embedded C engineers tweaking structs for tight memory, systems programmers auditing alignment before porting code, or kernel devs verifying offsets without full builds. Ideal for anyone reverse-engineering binaries or optimizing data serialization where padding kills cache performance.

Verdict

Grab it for quick struct sanity checks—works great out of the box despite 10 stars and 1.0% credibility score signaling early maturity with basic docs. Test on the demo first; it's raw but punches above its weight for interactive profiling.

(178 words)

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