SEQ File

What are SEQ files and how to open them

Are you having problems opening a SEQ file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a SEQ file?

SEQ files have multiple uses, and DNA Sequence is one of them. Read more about the other uses further down the page.

DNA Sequence File

These files are editable text files that contain a DNA sequence. Editable, in this case, means that users can manipulate the data, and that results can sometimes be derived from it. Character possibilities are often projected based on the desired DNA Sequence set up, and the files can also be saved in other formats to be used in different chromatogram software.

SEQ files are created by processing an AB1 file (another file that can be derived using chromatogram software).

When you cut .ab1 into pieces, .seq files will be created. Therefore, SEQ files are shorter than AB1 files. Trimming of AB1 files into SEQ files is done to further analyze the data in a DNA Sequence in a thorough but manageable way.

You can use many DNA sequencing programs to view and edit .seq files.

How to open SEQ files

We have identified four SEQ openers that are compatible with this specific type of SEQ file.

Programs that open DNA Sequence files

Last updated: June 29, 2022

More file formats using the SEQ extension

Through our research of SEQ files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Accent DemoMaker Sequence
  • CinemaScope Sequence
  • Cyber Paint Sequence
  • GEOS Convert Archive
  • Hadoop SequenceFile Format
  • Music-X Sequence
  • PlayStation Sequence Data Format
  • Sequence/Show
  • Sequencer Sequence
  • VideoFX2 Sequence
  • Vizastar Spreadsheet

Various apps that use files with this extension

These apps are known to open certain types of SEQ files. Remember, different programs may use SEQ files for different purposes, so you may need to try out a few of them to be able to open your specific file.

ZaraRadioZaraRadioUser submitted
SmartSound Sonicfire ProSmartSound Sonicfire ProUser submitted
Roll O' PictRoll O' PictUser submitted
EditSeqEditSeqUser submitted
Sakura Editor (Japanese)Sakura Editor (Japanese)User submitted
SeqBuilderSeqBuilderUser submitted
SnapGene ViewerSnapGene ViewerUser submitted
XnViewXnViewUser submitted
iTunesiTunesUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about SEQ file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.