Small tools, run where your data already is.

Most "paste your JSON here" tools quietly send that JSON to a server. Sometimes it's logged, sometimes it's fine, but you usually can't tell — and a lot of what people paste into these tools is real production data: API keys, customer records, internal config.

nullpath.tools takes the opposite default: every tool here runs entirely as JavaScript in your browser tab. Formatting, diffing, encoding, and generating all happen in memory, and nothing is transmitted anywhere. You can verify this yourself — every tool page shows a live counter of outgoing network requests, and it stays at zero.

The trade-off is that these tools can't do anything that genuinely requires a server (there's no account, no sync, no saved history across devices). In exchange, they load fast, work offline once cached, and never ask you to trust a privacy policy you haven't read.

The tool set is still growing — see the full directoryfor what's live and what's next.