All-in-One Toolbox is a growing collection of free tools for everyday jobs, from PDFs and pictures to spreadsheets and emails, plus guides that explain how to do those jobs well.
Why the tools never upload your files
Spreadsheets, customer emails and screenshots often hold details that should not leave your computer. Every tool here runs as a script inside the page you opened. Your files are read by your own browser and the results are made there too. Nothing is sent to a server, and nothing is kept after you close the tab, unless a tool says it saves something in your own browser, such as your saved snippets.
You can check this yourself: load a tool, turn off Wi-Fi, and keep using it.
How the tools are tested
Before a tool is published it gets its own set of automated checks. Where a tool calculates something, the answers are compared with hand calculations and with a second, separately written version of the same logic, run on hundreds of random inputs. Every tool page ends with what was tested and what was not.
The guides
The guides cover office tasks and AI tools in plain English. When a guide reports an experiment, the answers shown are the real ones, and the method is written up so you can repeat it.
Get in touch
Found a bug, or want a tool that does not exist yet? Use the contact page.