On your device
The work happens in your browser. Nothing is uploaded, so there is nothing to store, leak or subpoena.
Tools that run on your device.
Your data does not need to travel to be useful.
Callanagi is a growing catalogue of digital tools. Whenever a job can be done in your browser, it is done in your browser, and the page shows you that it was instead of asking you to believe it.
Privacy you can watch happen
Open your browser's network tab and use any tool on this site. A tool marked as local makes no request carrying what you typed. There is nothing to trust, because there is nothing to take on faith.
Page files come from a CDN, like any website. Nothing you type is in them.
Three places a tool can run, and we always say which
Most sites blur the line between these. The guarantee is not the same in each one, so the label is not the same either.
On our server
Some work does not fit in a browser. When that happens, your input is sent, processed and dropped. Never kept. You are told before it leaves.
On someone else's server
A few jobs need a provider we do not run. We cannot promise privacy we do not control, so we name the provider instead of pretending it is us.
In the catalogue
Each tool is its own page, built to be useful on its own. You are not expected to start here.
DeveloperRuns on your device
Password generator
Generate a password that the site you are signing up for will actually accept.
DeveloperRuns on your device
JSON formatter
Format, minify and check JSON without pasting it into someone else's database.
DeveloperRuns on your device
UUID generator
Version 4 UUIDs, in bulk, in your browser.
UtilitiesRuns on your device
Image converter
Convert and resize PNG, JPEG and WebP in batches, without uploading a single file.
DeveloperRuns on your device
CSV to JSON converter
Convert CSV to JSON and back, in your browser, without handing your export to anyone.