About Makecade Tools

Why this exists

Searching for something as ordinary as “merge two PDFs” lands you on a page that wants an email address, uploads your document to a server in an unnamed jurisdiction, caps you at three files a day, and stamps its logo on the result. The task itself takes a browser about forty milliseconds.

Makecade Tools is 11 of those tasks, done properly. Each one runs as JavaScript in your own browser. There is no upload step because there is nowhere to upload to.

How it works

Modern browsers are capable of far more than most web apps ask of them. Canvas and OffscreenCanvas handle image decoding and re-encoding. pdf-lib manipulates PDF object graphs in memory. The Intl API carries the full IANA time zone database. Financial maths is arithmetic. None of it needs a round trip to a server.

The practical consequences: your files never leave the device, the tools keep working when your connection drops, and there is no queue when the site is busy — every visitor brings their own compute.

How it is paid for

Advertising, and nothing else. There is no premium tier, no data brokerage, and no analytics on what you put into the tools — the site could not sell your inputs if it wanted to, because it never receives them. Ad slots are fixed-size and never inserted into the middle of a workflow. Decline the cookie prompt and every tool still works identically.

Corrections

The calculators state their formulas and assumptions in the reference section under each tool. If you find an error in one, that is a bug worth reporting — get in touch.