Compressed FASTQ files, (`*.gz`)

• Files ending in .gz are compressed (zipped) files.
  • The fastq.gz format is a compressed version of a fastq dataset.
  • The fastqsanger.gz format is a compressed version of the fastqsanger datatype, etc.
• Compression saves space (and therefore your quota).
• Tools can accept the compressed versions of input files
• Make sure the datatype (compressed or uncompressed) is correct for your files, or it may cause tool errors.

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{% snippet  faqs/galaxy/datatypes_fastq_compressed.md %}