[codec] WASM AdvanceComp

Description

Contributor guide

Tech stack

typescriptwasm

Domain

frontendperformance

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-2 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

needs investigation

Prerequisites

understanding of WASMfamiliarity with Squoosh codebaseimage compression basics

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

20

Research direction

The issue requests adding a new codec via WASM. First, examine existing codec implementations in the Squoosh repository to understand the structure (e.g., codecs like mozjpeg, webp). Then, locate the AdvanceComp source from the provided link and explore how to compile it to WASM. Finally, integrate it following the existing patterns, ensuring a pull request is made when ready.