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swift king

UI/UX designer. Building browser-native design tools. Writing about SVG, web performance, and design-to-code workflows.

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Batch Processing 500 Images in the Browser Without Crashing

Batch Processing 500 Images in the Browser Without Crashing

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The Hidden Cost of Free Online Image Compressors

The Hidden Cost of Free Online Image Compressors

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1 min read
Why Your Favicon Generator Probably Uploads Your Logo to a Server

Why Your Favicon Generator Probably Uploads Your Logo to a Server

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I Tested 10 Online File Converters — None of Them Were Actually Private

I Tested 10 Online File Converters — None of Them Were Actually Private

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1 min read
Building a GS1-Compliant Barcode Generator in Pure JavaScript

Building a GS1-Compliant Barcode Generator in Pure JavaScript

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2 min read
Why I Stopped Using Cloud Converters and Built My Own

Why I Stopped Using Cloud Converters and Built My Own

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2 min read
What I Learned Implementing GS1 Barcode Standards in JavaScript

What I Learned Implementing GS1 Barcode Standards in JavaScript

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Canvas drawImage() Took Me 3 Days to Get Right

Canvas drawImage() Took Me 3 Days to Get Right

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Building a Zero-Dependency Barcode Scanner with the Web Barcode Detection API

Building a Zero-Dependency Barcode Scanner with the Web Barcode Detection API

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3 min read
Why Converting WebP to PNG Isn't Just Save As

Why Converting WebP to PNG Isn't Just Save As

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WebP's Compression Secret: How a 1MB PNG Becomes a 200KB WebP

WebP's Compression Secret: How a 1MB PNG Becomes a 200KB WebP

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2 min read
Zero-Dependency Favicon Generation with Canvas API — Build Your Own in 50 Lines

Zero-Dependency Favicon Generation with Canvas API — Build Your Own in 50 Lines

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2 min read
Zero-Dependency Favicon Generation with Canvas API — Build Your Own in 50 Lines

Zero-Dependency Favicon Generation with Canvas API — Build Your Own in 50 Lines

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3 min read
Barcode Density Matters More Than You Think: Code 128 vs Code 39

Barcode Density Matters More Than You Think: Code 128 vs Code 39

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How Browsers Actually Load Favicons (And Why Yours Won't Update)

How Browsers Actually Load Favicons (And Why Yours Won't Update)

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The SVG Rendering Bug That Cost a Client $2,000

The SVG Rendering Bug That Cost a Client $2,000

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What 5 Years on an Amazon Dock Taught Me About Barcodes

What 5 Years on an Amazon Dock Taught Me About Barcodes

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What Actually Happens When a Barcode Won't Scan at 3 AM

What Actually Happens When a Barcode Won't Scan at 3 AM

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Getting Started with SVG Export Using the Browser Canvas API

Getting Started with SVG Export Using the Browser Canvas API

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