Open ARROW files in your browser
The memory layout of modern data tools, saved to a file. Open one right here as a table. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your table opens at once, its header pinned to the top and its rows counted in the background.
- Every row a scroll away • Files of any size
- Sort and filter • Counts for every column
- Search • Every match counted
- Export • Save as CSV, Excel, JSON or Parquet
About ARROW
Apache Arrow, started in 2016, lays out a table in memory column by column, in a way pandas, Polars, DuckDB, Spark and R share without converting anything. Its IPC format writes that memory to a file or a stream as it is.
An Arrow file holds a schema and record batches of rows, with a footer that points at each batch, while a stream (.arrows) holds the same messages one after the other. Columns can be compressed with LZ4 or Zstandard, and repeated text is often kept once, in a dictionary.
Filepeek reads it with Flechette, a record batch at a time as you scroll, so big files open at once. Show details lists the schema and the metadata.
Apache Arrow IPC
.arrow • .arrows
Format
- MIME type
- application/vnd.apache.arrow.file
- Made by
- The Apache Software Foundation
- Released
- 2016
Inside the file
- Layout
- Columns in record batches
- Compression
- None, LZ4 or Zstandard
- Types
- Numbers, decimals, dates, text, lists and structs
- Kinds
- A file (.arrow) or a stream (.arrows)
Opens in every browser
No browser opens Arrow files by itself. Filepeek reads them in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I open an Arrow file?
Drop it on this page or choose Peek an ARROW. Its rows open as a table, each column with its type, with nothing to install.
What is the difference between .arrow and .arrows?
An .arrow file has a footer that points at every record batch, so any part of it is quick to reach. An .arrows stream holds the same batches one after the other, the way Arrow sends data over a network. Filepeek opens both.
Is Arrow the same as Feather?
Feather 2 is an Arrow IPC file under another name, and opens the same way. The first Feather, from before 2020, is a format of its own that Filepeek doesn't read.
Can I save it as Parquet or CSV?
Yes. Choose Export, then Save as Parquet, CSV, Excel, JSON or JSON Lines, with every row or only the rows you sorted and filtered.
Is my file uploaded?
No. The file is read inside your browser and never leaves your device.