CodeGraphGo Code Visualizer
Turn Go source code into an interactive flowchart, call graph, and package diagram. Write or paste code, press Analyze, and explore how your program actually flows — directly in the browser, with no setup.
What you can visualize
- Program flow — functions,
if/switchbranches,forandrangeloops, returns, defers, panics, and goroutine launches as a control-flow chart. - Call graph — which functions call which, across files and packages, including calls into the standard library and unresolved targets.
- Module graph — files, packages, and their imports.
Real AST analysis, not AI
CodeGraph parses Go with the standard go/parser,
go/ast, and go/types packages — the same
machinery the Go compiler toolchain uses. Diagrams are deterministic:
the same code always produces the same graph. Your code is analyzed,
never executed.
How it works
- Open the editor and write or paste Go code — multiple files and packages are supported.
- Press Analyze (or let auto-analyze rebuild the graph as you type).
- Explore the diagram: click a node to jump to its line, move the cursor to highlight the matching node, switch between App Flow, Call Graph, and Module Graph.
Made for understanding Go
Goroutines, channels, defers, and error paths are exactly the parts of Go that are hard to follow as plain text. Seeing them as a graph makes execution order, branching, and concurrency structure obvious — whether you are learning the language with the built-in Go by Example programs or explaining a design to your team with a share link.
FAQ
- Can CodeGraph generate a flowchart from Go code?
- Yes. Paste or write Go code and CodeGraph builds an interactive program flow chart, call graph, and module graph using real AST analysis — no AI involved.
- Does CodeGraph execute my Go code?
- No. The analysis is fully static: code is parsed and type-checked, never compiled or run.
- What Go constructs are shown on the diagram?
- Functions and methods, branches, loops, returns, defers, panics, goroutines, and function calls across files and packages.
- What is the difference between a call graph and a flowchart?
- A flowchart shows the order of statements inside functions; a call graph shows which functions call which. CodeGraph builds both from the same code.