Client-Side Image Compressor Documentation & Guide

# Overview

The Client-Side Image Compressor is a lightweight, zero-latency utility for optimizing individual photos, illustrations, and web graphics. Utilizing browser-native HTML5 Canvas rendering pipelines, it provides real-time byte reduction metrics and side-by-side previews without sending any data over the internet.

# How Browser-Native Compression Works

The compressor reads local files via the HTML5 `FileReader` API as Data URLs, paints them onto a hardware-accelerated `<canvas>` element, and re-encodes them via `HTMLCanvasElement.toBlob()` at user-selected compression factors.

# 1. Step-by-Step Compression Guide

# Technical Specifications & Limits

# Keyboard Shortcuts & Pro Controls

# Developer Integration & Code Examples

function compressImage(file, quality = 0.8) {
  return new Promise((resolve) => {
    const reader = new FileReader();
    reader.onload = (e) => {
      const img = new Image();
      img.onload = () => {
        const canvas = document.createElement('canvas');
        canvas.width = img.width;
        canvas.height = img.height;
        const ctx = canvas.getContext('2d');
        ctx.drawImage(img, 0, 0);
        canvas.toBlob((blob) => resolve(blob), 'image/jpeg', quality);
      };
      img.src = e.target.result;
    };
    reader.readAsDataURL(file);
  });
}

# Frequently Asked Questions