WAT Text → Binary Hex Inspector

Inspect how human-readable WebAssembly Text S-expressions encode into raw machine bytecode with sequential section headers.

Presets:

WebAssembly S-Expression (WAT)HUMAN_READABLE

(module
  (func $add (param $a i32) (param $b i32) (result i32)
    local.get $a
    local.get $b
    i32.add)
  (export "add" (func $add))
)

Encoded Bytecode Sections

Preamble (0x00)Magic bytes \0asm + Version 1

00 61 73 6d 01 00 00 00

Type Section (0x01)Declares signature (i32, i32) -> i32

01 07 01 60 02 7f 7f 01 7f

Function Section (0x03)Maps func 0 to Type signature index 0

03 02 01 00

Export Section (0x07)Exports func 0 with name "add"

07 07 01 03 61 64 64 00 00

Code Section (0x0a)local.get 0 (20 00), local.get 1 (20 01), i32.add (6a), end (0b)

0a 09 01 07 00 20 00 20 01 6a 0b

Loading WASM::COSMOS...