Turn ARROW datasets into JSON. It is converted in your browser, so the file never leaves your device.
Drop ARROW files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop ARROW (Arrow IPC) 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.
Press Convert. There is nothing else to set. The work happens in this tab.
Save the JSON, or download everything as one ZIP if you converted several files.
The ARROW to JSON converter is part of this page and runs inside your browser. Your datasets are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
Arrow is binary, and spreadsheet programs cannot open it. JSON is what APIs and most programming languages read natively. ARROW is at home in passing tables between data tools without conversion cost; JSON is the usual choice for APIs and data exchanged between programs.
Arrow IPC files and Feather version 2 files are read, including LZ4 and Zstandard compressed ones. The older Feather version 1 layout is refused with a message saying so.
Arrow files store a table in the same column-wise layout the Arrow library uses in memory, so a program can read the data without parsing it. It is written for speed rather than size. The streaming variant uses the .arrows extension. Feather version 2 is the same file format.
Opens in pandas, Polars, DuckDB, R's arrow package and other analytics tools; not Excel
ARROW converterJSON 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| ARROWApache Arrow table | JSONJSON data | |
|---|---|---|
| Stands for | Apache Arrow IPC file | JavaScript Object Notation |
| Type | Columnar data file | Structured data (text) |
| Compression | None by default (LZ4 or Zstandard optional) | None |
| Introduced | 2016, by the Apache Software Foundation | 2001, by Douglas Crockford |
| Opens in | pandas, Polars, DuckDB, R's arrow package and other analytics tools; not Excel | Any text editor, every programming language, browser developer tools |
| Best for | Passing tables between data tools without conversion cost | APIs and data exchanged between programs |
| File extension | .arrow, .arrows | .json |
No. The ARROW to JSON conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
The values are kept. Anything JSON has no way to express, such as formatting, formulas or nesting, is simplified or left out.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
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 ARROW file, press Convert and save the JSON. There is nothing to install.
Yes. Binary data files up to 150 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.