Updates

New tools

Music & Audio

• BPM & Delay Calculator: turn a tempo into delay, reverb and LFO settings for every note value, and hear each one before you use it.

Science & Math

• Uncertainty Propagation Calculator: type a formula and your measurements, and get the result’s uncertainty with every step written out.

Everything here runs in your browser, like the rest of FastTool. The files you open stay on your device.

Now listed with the other tools

Images to PDF and PDF to JPG Converter used to be reachable only by direct link. You’ll now find them in the tools list and the menus.

Clearer pages

• Several tools have plainer names that say what they do, such as Compare Two Screenshots and the Excel Hidden Sheets & External Links Checker. Their web addresses haven’t changed, so your bookmarks still work.
• Each tool page opens with the tool itself, and most show a worked example below it.

Easier to find your way around

• Every page now has the same menu (Tools, Guides, About) and the same footer, which lists the tools by category.
• All tools are grouped into six categories: Music & Audio, Science & Math, Images & Video, PDF & Documents, Data & Developer, and Make & Plan.
• A new Guides page collects our step-by-step guides in one place.
• This page is new too. It lists what changes on FastTool, with dates.

Privacy, site information and contact

• We rewrote the privacy policy, the cookie policy, the terms of use and the other pages about the site. They’re clearer, and most of them are shorter.
• The cookie notice is shorter and plainer: we use optional analytics cookies to see which tools get used, and everything works if you decline. You can change your choice at any time from “Cookie settings” in the footer.
• There’s now one contact address for everything: contact@fasttool.app. We reply within 7 business days.