WABT

WABT (WebAssembly Binary Toolkit) is a suite of tools for working with WebAssembly modules, developed as part of the WebAssembly community group. Written in C++ by the WebAssembly team including Ben Titzer and others, WABT provides essential command-line utilities for WebAssembly development, debugging, and validation. The toolkit includes: wat2wasm (converting WebAssembly Text Format .wat files to binary .wasm format), wasm2wat (the reverse, disassembling binary modules back to readable text), wasm-validate (checking that a binary module is valid according to the specification), wasm-objdump (displaying information about binary modules including sections, imports, exports, code disassembly, similar to the Unix objdump tool), wasm-interp (a WebAssembly interpreter for executing modules directly, useful for testing without a full browser or runtime), wasm-decompile (decompiling binary modules into a C-like readable format for analysis), wasm2c (converting WebAssembly modules to C source code that can be compiled with a standard C compiler), wasm-strip (removing unused sections from binary modules to reduce size), wasm-opcodecnt (counting opcode frequency for optimization analysis), spectest-interp (running the official WebAssembly spec test suite), and wasm-stats (collecting statistics about module structure). WABT is built with CMake and runs on Linux, macOS, and Windows. It is available via Homebrew, apt, npm (wabt package), and Docker. The toolkit complements the LLVM-based toolchain and Binaryen optimizer for complete WebAssembly tooling.