WASM Call Stack Resolver
Decode WASM crash call stacks to readable function names. Upload a .wasm binary and paste stack traces from Chrome, Firefox, or Node.js. The online alternative to addr2line for WebAssembly.
Upload WASM file.wasm โ Optional, for resolving wasm-function[N]
Upload Symbols file (optional).txt / .sym / .map
Resolved function names will appear here...How to Use
1. Upload your .wasm binary
Drag & drop or click to upload the .wasm file that was running when the crash occurred. The file is parsed entirely in your browser โ nothing is uploaded to any server.
2. Paste the crash stack trace
Copy the stack trace from your browser console, Node.js output, or crash report. We support all common formats including wasm-function[N], 0x hex offsets, and named WASM frames.
3. Read the resolved output
Function indices and hex offsets are automatically replaced with human-readable function names from the WASM name section. If your binary was stripped, upload an external symbols file (.sym / .txt) for mapping.
Supported Stack Trace Formats
Chrome / V8 (at wasm-function[42]:0x1a2b)Firefox (@http://...module.wasm:wasm-function[42]:0x1a2b)Node.js (wasm://wasm/func42)Emscripten (at Module._main (module.wasm:0x1a2b))Unity WebGL crash stacksRust / wasm-bindgen panic tracesGeneric (func index + hex offset)
FAQ
Related Tools
B64#0x
Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to text. Supports UTF-8 encoding.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text input.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal. Supports large numbers with BigInt.