CalcHub Tools Blog

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4 posts published so far

Nov 1, 2026
The loan payment formula, explained (and implemented in 15 lines of JavaScript)
CalcHub Tools
Oct 31, 2026
Merge, split and rotate PDFs entirely in the browser with pdf-lib
CalcHub Tools
Oct 29, 2026
Compress images in the browser with Canvas and WebP (no server, no upload)
CalcHub Tools
Oct 28, 2026
What's actually inside a JWT? Decoding one by hand in 10 lines of JavaScript
CalcHub Tools