Currently Gigasheet supports the following files with up to 1B+ rows and up to 5,000 columns:

  • CSV
  • JSON
  • LOG (Zeek, Squid, Apache, Cisco Firewalls, AWS CloudTrail, etc)
  • PCAP (selected fields)
  • TSV
  • XLSX / XLSM / XLTM / XLTX
  • ZIP, GZIP, or TAR of any of the above


Gigasheet supports the following encodings:


UTF-8, UTF-16, ASCII, IBM852, ISO-8859-1, ISO-8859-2, ISO-8859-6, ISO-8859-7, ISO-8859-9, ISO-8859-16, WINDOWS-1250, WINDOWS-1252, WINDOWS-1258


  • Save time: zip or gzip of any single file above to speed your uploads!
  • Looking for another file format? Let us know!
  • Looking for supported column data types? Check out this article