ToolDeck is a collection of small online tools you can use right in your browser. Each card handles one task, from counting characters to transforming text, helping you take care of the small things that come up in the middle of bigger tasks. Open a card, get the job done, and get back to what you were doing.
Pick a card. Solve one small thing.
How it works#
No account or download is required. Each tool is self-contained on a single page: open it, enter your input, and copy the result. Everything is free to use, and all you need is a browser, whether you're on a PC or smartphone. Each tool also comes with a usage guide.
Your data stays with you#
ToolDeck has no user accounts. By default, input data is processed in your browser and is not sent outside your device. For tools that require server-side processing, input data is used only for that processing and is not retained afterward. See our Privacy Policy for details.
A small, well-kept deck#
ToolDeck isn't meant to be a collection of every tool imaginable. Instead, we focus on the everyday tasks people actually need and keep the deck intentionally small. Each tool is designed around a single task, with usage guides available in both English and Japanese. Before adding a tool to the deck, we check not only expected inputs but also edge cases and usability, and make sure it's ready for real-world use.
Built with AI, finished by people#
We use AI as a tool in developing ToolDeck. But people decide what to build, how it should feel to use, and when it's ready. Every tool is reviewed for usability and polished down to the details before it is published.