.FQ

FASTQ Sequence Format

Learn about .fq files - FASTQ Sequence Format. Find software to open, compatibility information, and alternatives.

Data 3 Searches File Extension Details
.FQ
FASTQ Sequence Format

What is a .fq file?

File Extension Details

The FQ file extension, commonly referred to as FASTQ, is a text-based file format widely used in bioinformatics for storing biological polymer sequences, typically DNA or RNA, along with their corresponding base quality scores. Developed originally by the Wellcome Trust Sanger Institute, it has become the de facto standard for storing high-throughput sequencing data from platforms like Illumina. A standard FQ file represents each sequence using four lines: a sequence identifier starting with the '@' character, the raw sequence letters (A, C, T, G, N), a separator line starting with '+', and a string of ASCII characters representing the Phred quality scores for each corresponding base. This format is essential for genomic workflows, enabling researchers to perform quality control, sequence alignment, and variant calling.

Software Compatibility

Programs that can open and work with .fq files

Windows

Compatible Applications

Geneious Prime Compatible
UGENE Compatible
CLC Genomics Workbench Compatible
Notepad++ Compatible

macOS

Compatible Applications

Geneious Prime Compatible
UGENE Compatible
MacVector Compatible
Sublime Text Compatible

Linux

Compatible Applications

FastQC Compatible
SeqKit Compatible
UGENE Compatible
Vim Compatible

Mobile

Mobile Applications

Textastic Compatible
QuickEdit Text Editor Compatible

Frequently Asked Questions

About .fq files

To open a .fq file, you need compatible software. Here are some options:

  • Geneious Prime
  • UGENE
  • FastQC
  • Textastic

To convert a .fq file to another format, you can:

  1. Use compatible software Many programs that open .fq files also allow you to save or export them to different formats.
  2. Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert allow you to convert files between different formats without installing software.
  3. Specialized conversion tools: Search for '.fq converter' to find tools specifically designed for this file type.

  1. Verify the file extension is correct:
  2. Update your software:
  3. Try alternative software:
  4. Check for file corruption:

Like any file type, .fq files can be safe or potentially risky depending on their source:

  • Always scan files with antivirus software before opening
  • Keep your operating system and applications updated.
  • Be especially cautious with executable file types

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