How-to guides
How small can a photo get before it starts to show?
Why one photo survives 50 KB and another falls apart at 300 KB, and which lever to pull first.
Read the guide
The QuickFileToolkit blog
Files, sizes, and who else gets a copy.
We build tools that shrink and convert files without uploading them, which means we spend a lot of time on the awkward details — why a scan is 40 MB, why a portal rejects a 21 KB photo, what a website actually does with a document once you hand it over. This is where we write that down.
How-to guides
The mechanics behind the tools — what actually changes a file and what only looks like it does.
Privacy & security
What happens to a document once you hand it to someone else, and how to check before you do.
Privacy & security
How to check whether a web tool really keeps your file
Any site can print the claim. Four tests that check it instead — the quickest takes thirty seconds.
Read the guide
Privacy & security
What actually happens to your file when you upload it
Where a document actually goes after you drag it into a website — and how many copies that makes.
Read the guide
Forms & applications
Upload limits, photo rules and the portals that enforce them.
Work & documents
Sending files to other people without surprises.