📷 img-toolkit

A library for resizing and editing images.

Demo: https://2yh02.github.io/img-toolkit

Table of Contents

• Features
• Installation
• Usage
• Functions
• ResizeOptions
• Vite Setup for WASM
• License
• Author

Features

• ⚡ Fast & Efficient: Powered by Rust and WebAssembly.
• 📸 Supports JPEG, PNG, WebP formats.
• 📐 Resizing with automatic aspect-ratio handling.
• 🎚️ Adjust brightness easily.
• 🔍 Multiple resampling filters (Nearest, Triangle, CatmullRom, Gaussian, Lanczos3).

Installation

To install the library, you can use npm or yarn:

npm install img-toolkit
yarn add img-toolkit

Usage

Here's a basic example of how to use the img-toolkit library:

import { resizeImage } from 'img-toolkit';

const file = // your image file
const options = {
  width: 800,
  height: 600,
  quality: 0.8,
  format: 'jpg',
  brightness: 0.5,
  resampling: 2
};

resizeImage(file, options).then((resizedFile) => {
  console.log(resizedFile);
}).catch((error) => {
  console.error(error);
});

Functions

resizeImage(file: File, options: ResizeOptions): Promise<File>

Resizes and edits an image file according to the provided options.

Parameters:

• file (File): The image file to be resized and edited.
• options (ResizeOptions): The options for resizing and editing.

Returns:

• Promise: A promise that resolves to the resized and edited image file.

ResizeOptions

Option	Type	Description
width	number	(Optional) Target width in pixels. If omitted, width is auto-adjusted.
height	number	(Optional) Target height in pixels. If omitted, height is auto-adjusted.
quality	number	Image quality level ranging from 0.0 (lowest) to 1.0 (highest quality).
format	string	Output format ("jpg", "png", "webp").
brightness	number	(Optional) Brightness level from 0.0 (darkest) to 1.0 (brightest). Defaults to 0.5 if omitted.
resampling	number	(Optional) Resampling quality from 0 (fastest) to 10 (highest quality). Defaults to 4 if omitted.

Vite Setup for WASM

To use img-toolkit with Vite, you must disable pre-optimization for the package to prevent WebAssembly loading issues:

vite.config.js

import { defineConfig } from "vite";

export default defineConfig({
  optimizeDeps: {
    exclude: ["img-toolkit"],
  },
});

Without this setting, Vite may attempt to pre-bundle img-toolkit and break WASM module resolution. This ensures that WebAssembly is loaded correctly at runtime via dynamic import().

License

This project is licensed under the MIT License. See the LICENSE file for details.

Author

Created by 2YH02.