About ToolHive

ToolHive is a lightweight online toolbox for developers, writers, data workers, and people who need practical salary, tax, Japan life, network, and media testing utilities.

The site focuses on tools that solve a specific copy-paste workflow. Instead of publishing broad generic calculators, ToolHive prioritizes JSON formatting, JWT inspection, text comparison, CSV conversion, m3u8 playback testing, IP location lookup, DNS lookup, salary tax estimates, Japan visa planning, and similar high-frequency tasks.

Most tools are designed to run in the browser. This keeps the experience fast and reduces the need to upload snippets, tokens, drafts, or planning numbers to a server.

Some tools require a lightweight server API, such as DNS lookup or public IP geolocation. When a network request is needed, the page explains that behavior so users know what leaves the browser.

ToolHive pages include usage notes, privacy notes, limitations, FAQ content, related tools, and structured SEO metadata so visitors can understand the tool before relying on its output.

The project is maintained as a practical utility site. Feedback, correction requests, and content improvement ideas are welcome at hello@toolhive.fun.