About Toolio

Toolio is a collection of free, privacy-first tools you run right in your browser — calculators, converters, image and PDF utilities, generators, and a few fun ones. No install, no login, no uploads: everything runs on your device and your data never leaves the browser.

Who makes it

Toolio is built by Pong Studio Co., Ltd (pongvn.com), part of the BANA family of small, useful products. We also publish independent blogs on tech, AI, and markets — you'll find the ones in your language linked in the footer.

Our approach

• Private by design — processing happens client-side; nothing is sent to a server.
• Free & open access — no account or paywall to use a tool.
• Fast & offline — pure HTML/CSS/JS, works even without a connection once loaded.
• Multilingual — available in English, 한국어, Español, Deutsch, 日本語 and Tiếng Việt.

Have an idea or found a bug? We'd love to hear it — see the Contact page.