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Mubeen Khan

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Resizing Is Not Compressing: Why Your 4000px Photo Still Loads Slowly

Resizing Is Not Compressing: Why Your 4000px Photo Still Loads Slowly

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2 min read
The cron expression that runs on the 1st AND every Sunday (the OR trap nobody warns you about)

The cron expression that runs on the 1st AND every Sunday (the OR trap nobody warns you about)

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2 min read
The regex bug that passes every test and still ships broken

The regex bug that passes every test and still ships broken

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3 min read
Markdown Is Not HTML, But It Was Born to Become It

Markdown Is Not HTML, But It Was Born to Become It

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2 min read
Your JWT is not encrypted: what every developer should know before pasting tokens into a debugger

Your JWT is not encrypted: what every developer should know before pasting tokens into a debugger

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2 min read
10 digits or 13? The timestamp bug that sends your dates to the year 56,189

10 digits or 13? The timestamp bug that sends your dates to the year 56,189

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2 min read
Your API gave you JSON. Your spreadsheet wants CSV. Here is the conversion, done right.

Your API gave you JSON. Your spreadsheet wants CSV. Here is the conversion, done right.

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3 min read
Reading two drafts side by side is how small edits slip through

Reading two drafts side by side is how small edits slip through

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2 min read
encodeURIComponent vs encodeURI: the one-function bug that breaks links

encodeURIComponent vs encodeURI: the one-function bug that breaks links

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3 min read
btoa() broke my emoji: Base64 in JavaScript done right

btoa() broke my emoji: Base64 in JavaScript done right

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2 min read
WiFi QR codes are just one line of text (here is the format)

WiFi QR codes are just one line of text (here is the format)

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2 min read
Your mockups deserve better than the same grey lorem ipsum

Your mockups deserve better than the same grey lorem ipsum

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2 min read
How I Shipped a Bilingual EN/ES Calculator Site on Next.js Static Generation

How I Shipped a Bilingual EN/ES Calculator Site on Next.js Static Generation

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1 min read
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