# bytecodealliance/wasm-tools

CLI and Rust libraries for low-level manipulation of WebAssembly modules

Repository: https://github.com/bytecodealliance/wasm-tools
Canonical: https://ross.abutalabs.com/products/wasm-tools
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: webassembly, wasm
Last push: 2026-08-25T20:43:55+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 2297, "days_push": 8, "days_rel": 9, "gap_med": 8, "n_releases_24m": 62}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1782, forks 347 (observed 2026-08-28T04:05:35.606863+00:00)

## What it is
A Bytecode Alliance project providing a CLI and Rust libraries for low-level manipulation of WebAssembly modules. It supports validation, parsing, printing, mutation, stripping, and conversion between WAT/WASM formats, plus WebAssembly component model tooling with WIT interfaces.

## Use cases
- validate a wasm binary
- convert wat to wasm and back
- print the text format of a wasm module
- create a component from a core wasm module
- strip custom sections from a wasm file
- inspect wasm binary sections with objdump
- work with WIT interface definitions

## When to choose
- you need low-level inspection or manipulation of WebAssembly binaries
- you're building Rust tooling around wasm modules or the component model
- you want to validate wasm files against specific feature flags

## When to avoid
- you need a high-level runtime to execute wasm (use wasmtime or wasmer)
- you want a bundler or full build pipeline for web apps
- you need a JavaScript/Node wasm toolchain

## Facets
- artifact type: cli-tool
- maturity: active
- function: cli, parser, compiler, developer-tools, wasm
- domain: developer-tools, compilers, parsers, web-development
- platform: rust, cli, cross-platform, windows
- tags: webassembly, wasm, wat, wit, component-model, bytecode-manipulation, validation, linux, macos

## Member repositories
- bytecodealliance/wasm-tools (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:35.606863+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:24:21.055316+00:00, confidence not recorded.
  - readme: https://github.com/bytecodealliance/wasm-tools (fetched 2026-08-28T04:05:35.606863+00:00, sha 93a4a5403b7e)
  - registry_crates: https://crates.io/api/v1/crates/wasm-tools (fetched 2026-08-29T11:02:53.524236+00:00, sha 50db878167b1)
- Data as of 2026-08-30T08:39:29.467469+00:00.