Guides
Straight answers to the questions that come up when you are actually trying to get something done — and honest about the parts that are not simple.
How to merge PDF files without uploading them
Every popular PDF merger uploads your documents to a server. If you are merging contracts, medical records or ID scans, that matters. This is how to do it without sending anything anywhere.
How to remove your location from a photo before sharing it
A photograph of your living room can contain the address. Most phone cameras record GPS coordinates by default, and nothing about the picture hints that it does.
How to add page numbers to a PDF
Straightforward in principle, fiddly in practice — because the interesting cases are the ones a cover page, a second volume, or a mixed batch throw up.
Why your PDF still has your name in it
Open the document properties of a PDF you are about to send. There is a decent chance it names you, and you have probably never looked.
How to resize an image without it looking worse
The phrase "without losing quality" means something specific, and it only applies in one direction. Understanding that one rule explains almost every resizing question.
How to split a PDF into separate files
Two different jobs get called "splitting". Picking the right one is most of the work.
How to convert images to PDF for a document upload
Portals demand PDF, you have a phone full of photos, and the small print mentions a size limit. The fiddly parts are the details.
Why these exist
Most file-tool sites publish a page per keyword and call it content. These are written for the cases where the obvious answer is incomplete — the cover page that should not be numbered, the photo that carries your address, the upload limit that rejects a perfectly good document.
Every guide states its caveats. If a technique has a downside, it is in the text rather than buried.