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wasmparser

v0.245.1 Growing

A simple event-driven library for parsing WebAssembly binary files.

Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT Edition 2021 MSRV 1.82.0
#parser#wasm#webassembly

Quick Verdict

  • โœ“Actively maintained (updated 43d ago)
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (6.6K crates depend on it)
  • โœ“Permissive license (Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT)

Security

Checking security advisories...
Downloads
90.2M
Dependents
6.6K
Releases
270
Size
268KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

15.0M downloads in the last 30 days (500.0K/day), up 110% from the previous period.

๐Ÿ”—
Widely adopted

6.6K crates depend on wasmparser. Strong ecosystem adoption means battle-tested code and long-term stability.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 151 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 8+ years old, wasmparser hasn't reached 1.0 yet. Expect potential API changes between versions.

๐ŸŒŸ
Used by top crates

Notable dependents include object, wasm-encoder, wit-parser, wasmtime-environ, wasmtime. When high-quality crates choose wasmparser, it's a strong quality signal.

Health Breakdown

Maintenance 16/25

Recency, release consistency, active ratio

Quality 15/25

Yanked ratio, deps, size, maturity, features

Community 12/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
291K/day avg+179%
0200K400K600K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.244.0
36%
v0.102.0
18%
v0.214.0
17%
v0.80.2
15%
v0.207.0
13%

Release Timeline

270 releases1 yankedsince 2017
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2017
34
2018
28
2019
35
2020
41
2021
15
2022
16
2023
30
2024
35
2025
33
2026
3
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Yanked

Feature Flags

default =["std", "validate", "serde", "features", "component-model", "hash-collections", "simd"]

std*simd*serde*try-opfeatures*validate*component-model*hash-collections*prefer-btree-collections

README

Loading README...

Maintainers

Dependencies
11
direct dependencies
Dependents
6.6K
crates depend on wasmparser

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