# Data format tools

Convert data without hiding representation changes.

Canonical: https://tamperbox.dev/categories/data

Updated: 2026-10-29

Reviewed: 2026-10-26

Convert data without hiding representation changes.

## Choose a check

Use the JSON and YAML converters to inspect duplicate keys, unsafe numbers and presentation loss. Use Unix Timestamp Converter to interpret epochs, units and time zones. These conversions run in your browser; verify exported data in the system that consumes it.

## Tools in this collection

- [JSON to YAML Converter](https://tamperbox.dev/json-to-yaml): **Your data is JSON, but the next tool needs YAML.**

  Convert JSON to YAML live and refuse ambiguous or unsafe data.
- [YAML to JSON Converter](https://tamperbox.dev/yaml-to-json): **Need your YAML in a JSON-only app? See what survives the conversion.**

  Convert YAML to JSON live and expose lossy or unsafe constructs.
- [Unix Timestamp Converter](https://tamperbox.dev/unix-timestamp): **Make sense of a date in your logs, or test where date handling breaks.**

  Convert exact timestamps, check time zones, and break or heal date inputs.

## Continue exploring

[API & HTTP tools](https://tamperbox.dev/categories/api) · [Email authentication tools](https://tamperbox.dev/categories/email) · [Domains, registration & hosting tools](https://tamperbox.dev/categories/domains) · [DNS tools](https://tamperbox.dev/categories/dns) · [Network & IP tools](https://tamperbox.dev/categories/network) · [Crawl, SEO & site checks](https://tamperbox.dev/categories/web) · [Web security & TLS tools](https://tamperbox.dev/categories/security) · [Text & test data tools](https://tamperbox.dev/categories/text-testdata) · [Localization tools](https://tamperbox.dev/categories/localization) · [UI testing tools](https://tamperbox.dev/categories/ui-testing)