How to get a file under an exact size limit
1 MB, 100 KB, 50 KB. Which lever to pull for each target, when the limit is impossible, and how to stop guessing.
Insights
Document work,
explained properly.
Practical writing about PDF, image and document work — what is actually inside the file, which settings change the outcome, and how to get it right the first time. Every guide is written here, not reprinted.
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How to turn a document into an image, and when to bother
Word, Excel and slides do not export to JPG directly. The reliable route goes through PDF — and costs you the text layer permanently.
Printing a PDF properly from any device
The settings that matter are the same everywhere: actual size, background graphics, and duplex binding edge. The rest is menu location.
How to calculate a mortgage payment, and read the schedule
One formula produces the monthly figure. Understanding why the early years are almost all interest is what actually changes decisions.
Percentage increase, decrease, and the points confusion
A 50% rise followed by a 50% fall does not return you to the start. Here is why, and the difference between percent and percentage points.
Gradients, shadows and palettes that do not look generated
Two-stop gradients band, single shadows look sprayed on, and a palette built by rotating hue falls apart. What to do instead.
Base64, URL encoding and JWTs: none of them is encryption
Three things routinely mistaken for security. All are reversible by anyone, and a JWT payload is readable by pasting it into a decoder.
MD5 vs SHA-256, and how to actually verify a download
MD5 is broken for security and fine for detecting accidental corruption. Knowing which job you have decides which hash to use.
Word counts, speaking time and every platform limit
How long 750 words takes to say, what each platform actually truncates at, and why counting characters is harder than it looks.
Stop reading, start doing
Every tool in this guide is free.
154 browser-based utilities. No account, no upload, and no file size limit — your files are processed on your own device and never sent anywhere.
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