yoshuawuyts/components

[component] ocr — image/PDF → text

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#8 opened on May 1, 2026

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help wanted

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Description

Goal

Wasm component to OCR static images (PNG/JPEG), and, optionally, single-page PDFs, returning UTF-8 text or Markdown.

Scope/Features

  • Pure in, pure out: image/PDF bytes in, UTF-8 text or Markdown out
  • Tesseract as likely backend
  • Optional bounding boxes for detected words

Rough WIT shape

  • extract(input: list<u8>) -> result<ocr_output, error>
  • OCR output: text + optional bounding boxes/coordinates

Candidate crates

Labels

  • help wanted

Ambitious; pure function, but deploys a non-trivial native backend. Worth prioritizing security and portability.

Contributor guide

Research direction
Study how to integrate Tesseract into a Rust WASM component using the tesseract crate or binding. Understand the WIT interface and how to export functions from a WebAssembly component. Look at existing wasm component examples in the repository.
Tech stack
rustwasm
Domain
backend
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.
Over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40