TOML
TOML data
TOML is a small configuration format with explicit sections and typed values. Rust's Cargo and Python's pyproject.toml use it.
Opens in Any text editor
TOML converterTOML to JSON converter, without the upload.
Turn TOML config files into JSON. It is converted in your browser, so the file never leaves your device.
Drop TOML files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
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- On your device · nothing is uploaded
- No account, no email
- Batch and ZIP download
- Free
How to convert TOML to JSON
Add your TOML config files
Drop TOML files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
JSON is already chosen
Press Convert. There is nothing else to set. The work happens in this tab.
Download
Save the JSON, or download everything as one ZIP if you converted several files.
Why ToAny
Private by construction
The TOML to JSON converter is part of this page and runs inside your browser. Your config files are never sent to ToAny or to anyone else.
No upload, no queue
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
Free, without an account
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
TOML to JSON: what to expect
TOML is understood by fewer tools than JSON or YAML. JSON is what APIs and most programming languages read natively. TOML is at home in simple configuration files; JSON is the usual choice for APIs and data exchanged between programs.
Keys, nesting and values carry over. Comments in the TOML file are not carried over, because only the data is read.
TOML vs JSON
JSON
JSON data
JSON represents data as nested objects and lists in plain text. It is the default language of web APIs. Unlike a spreadsheet it can be nested to any depth, which is also why turning it into rows and columns takes a decision about how to flatten it.
Opens in Any text editor, every programming language, browser developer tools
JSON converter| TOMLTOML data | JSONJSON data | |
|---|---|---|
| Stands for | Tom's Obvious Minimal Language | JavaScript Object Notation |
| Type | Structured data (text) | Structured data (text) |
| Compression | None | None |
| Introduced | 2013, by Tom Preston-Werner | 2001, by Douglas Crockford |
| Opens in | Any text editor | Any text editor, every programming language, browser developer tools |
| Best for | Simple configuration files | APIs and data exchanged between programs |
| File extension | .toml | .json |
Questions
Are my config files uploaded anywhere?
No. The TOML to JSON conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
Is anything lost when converting TOML to JSON?
The values are kept. Anything JSON has no way to express, such as formatting, formulas or nesting, is simplified or left out.
Can I convert several TOML files at once?
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
How do I convert TOML to JSON on Windows, Mac, iPhone or Android?
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the TOML file, press Convert and save the JSON. There is nothing to install.
Is there a file size limit?
Yes. Data files up to 300 MB are accepted; a larger file is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.