Move data between formats effortlessly
Conversion is one of the most common things developers do: the same information needs to exist as a Unix timestamp in one system and an ISO 8601 string in another, as a JSON array in an API and a table in a spreadsheet, or as a PNG in one place and a WebP somewhere else. The tools in this category make those transformations quick and accurate, so you can stop writing one-off scripts for routine conversions.
Each converter runs client-side. That’s especially valuable for the image converter: your pictures are decoded and re-encoded in your browser and never uploaded, so even private images stay on your device.
Tools in this category
- Date & Time Converter — Convert between Unix timestamps, ISO 8601, and human-readable dates across time zones.
- JSON ⇄ Table Converter — Turn a JSON array into a table (and back again).
- Image Converter — Convert images between common formats such as PNG, JPEG, and WebP.
Common use cases
You’ll reach for these converters whenever two systems disagree about format. Translate a timestamp from a log into a readable local date to investigate an incident, flatten a JSON API response into a table you can scan or paste into a sheet, rebuild a JSON array from tabular data, or change an image’s format to meet an upload requirement or shrink its size. Because the conversions are deterministic, the output is something you can rely on.
Frequently asked questions
Which date formats are supported? The converter handles Unix timestamps (seconds and milliseconds), ISO 8601, and common human-readable formats, with time-zone awareness.
Are my images uploaded to convert them? No. Image conversion happens entirely in your browser using the Canvas API, so your files never leave your device.
Can I convert a large JSON array to a table? Yes. The transformation runs locally and handles sizeable arrays; nested structures are flattened into columns where possible.