Anyfile
Open file
.csvTypical support level 5

Open CSV Data Online

CSV stores rows as delimited text, but quoting, encodings and inferred types still need parsing. Anyfile registers the selected file with DuckDB-Wasm and returns bounded Arrow batches to the table viewer.

Choose a .csv file

Your file stays on this device

Anyfile reads only the local file you select. Parsing, decoding and rendering happen in this browser tab; the file is not uploaded to Anyfile servers.

What Anyfile can show

  • Inferred columns and data types
  • Paged rows from plain, gzip or Zstandard CSV

Limits and conditions

  • Delimiter and type inference can misread irregular files
  • CSV does not preserve formulas or workbook formatting

IMPLEMENTATION

Viewers responsible for this format

Excel viewer
Read-only workbook parsing and virtualized sheet browsing.
See implementation and open-source credits
Code and text viewer
Read-only syntax-aware viewing for source and text files.
See implementation and open-source credits
DuckDB data viewer
Paged local querying for structured files and DuckDB databases.
See implementation and open-source credits

Common question

Can Anyfile open a very large CSV?

It avoids rendering every row at once, but parsing and queries still use this device’s memory.