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🔧 How to generate a valid file of any exact size, in the browser

⏱️ vor 23h 43m (05.08.2026 um 03:16 Uhr) 📖 2 Min. Lesezeit 📂 🔧 Programmierung 📡 Feed 🔗 Quelle: dev.to
Schrift:

I needed a 10 MB PDF to test an upload limit. Not "about 10 MB" — exactly 10,485,760 bytes. Every generator I found gave me fixed sizes or made me wait for a server download.

So I looked into doing it in the browser. The interesting part wasn't the size. It was keeping the file valid while hitting an arbitrary byte count.




The naive...

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