Putting your signature on a document, on any device
Every platform can already sign a PDF without extra software. The image quality of the signature matters more than most people expect.
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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Two different things with almost the same name
An electronic signature is a mark showing intent. A digital signature is cryptography. Knowing which you have explains why a valid signature can later show as invalid.
Why signatures stall, and how to stop chasing them
Most delays in getting a document signed are avoidable and have nothing to do with the contract. They come from how the request was made.
Size limits, clickable links and documents people keep
Attachment limits are smaller than they look because encoding inflates every file by a third. Here is what actually fits, and how to make links work.
Which tags change what people see, and which do nothing
Google rewrites most meta descriptions, measures them in pixels rather than characters, and stopped caring about keyword density long ago.
Realistic ad revenue, and tracking where traffic came from
Ad income depends far more on where your readers are and what the page is about than on how many of them there are. The numbers are widely misrepresented.
Flexbox or Grid, and why dark mode is not an inversion
One dimension or two decides the layout question. Dark mode is harder — inverting a light palette produces something genuinely unpleasant to read.
Three things that fail quietly and waste an afternoon
A trailing comma, a stripped space inside calc(), and a lookbehind that was unsupported until recently. Each fails in a way that hides the cause.
Real encryption, fake locks, and forgotten passwords
PDFs have two kinds of password and only one is real security. Knowing which you are dealing with explains why some files unlock instantly and others never will.
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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