Simple App Pro
For the questions a tool can't answer — written from what we learned building them.
This blog doesn't explain how to use the tools. Which button to press is already written on each tool's own page, and copying that here would just be writing the same thing twice.
It covers what the tools can't answer instead: where the real security boundary sits when you send a file over WebRTC, what "processed in your browser" actually means, what to check before you decide to average down. Most of it started as a problem hit while building the tools.
There aren't many posts. One per topic, written only when there's something worth saying.
10 posts
Rotating all 20 pages of a document by 90° changed the file size by exactly zero bytes. Keeping only 3 of those pages cut it by 85%. Here is what is actually going on inside a PDF.
The number a calculator gives you and the number in your bank account rarely agree. Neither is wrong — they answer different questions.
What JPEG quality gives you a 500KB file? There's no way to calculate it. The problem we ran into building a size-targeting compressor, and how binary search solved it.
HEIC delivers the same quality as JPEG at half the size. So why can neither Chrome nor Windows open one? The obstacle is not technical — it is patent licensing.
Send files directly between PC and smartphone using WebRTC P2P — no server, no app install, just scan and share.
Before you buy more of a losing position, run through these 5 checks — the difference between opportunity and doubling your loss.
How split-entry investing reduces psychological pressure and enables disciplined, strategic investing.
Learn why range awareness matters, the difference between comfortable and maximum range, and how to extend it safely.
Learn what each frequency band does and apply beginner-friendly EQ settings right away.
The key difference between server-side and browser-side processing, and when each is appropriate.