All about BIGWIG Files

The BIGWIG file type is primarily associated with IGV.

BIGWIG	File extension: BIGWIG
	File type:	indexed genomic signal

What is a BIGWIG file?

BIGWIG files mostly belong to IGV. A bigWig file is a compressed, indexed, binary format for genome browser track files. It is designed for display of dense, continuous data such as genome-wide signal data. It is optimized for rapid display at various zoom levels. The bigWig format provides efficient access to data values at arbitrary genomic locations, allowing for smooth visualization and exploration of genomic signals.

How to open BIGWIG files

You need a suitable software like IGV to open a BIGWIG file. You need a suitable software like IGV to open a BIGWIG file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your BIGWIG file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a BIGWIG file directly in the browser:. Just drag the file onto this browser window and drop it.

Online BIGWIG Text Viewer

Choose your .bigwig file to analyze

or drag and drop it here

Online File Viewer

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Unable to Open a .BIGWIG File? Quick Solutions:

BIGWIG files can originate from various genomics programs and aren't universally openable by standard apps.

Identify the Source: If received from a bioinformatician or DNA sequencing workflow, it is likely an indexed genomic signal file for genome browser tracks.
Check the Header: Inspecting the file in a hex viewer reveals its binary nature:
- Magic bytes 26 FC 8F 88 confirm a standard BigWig file.
- Readable text like <?xml or {" suggests an incorrectly renamed text file.
Use the Original Software: Viewing these tracks usually requires the original software, such as IGV (Integrative Genomics Viewer), UCSC Genome Browser, or JBrowse. If unsure, ask the sender.
Use this Webpage: Drag and drop your file onto this webpage to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for BIGWIG File Extension

File classification:

genome browser track file

Related files:

bw, tdf

Mime type:

application/octet-stream

a bigwig indexed genomic signal is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with BIGWIG files

Associate the BIGWIG file extension with the correct application.
Update your software that should actually open indexed genomic signals. Because only the current version supports the latest BIGWIG file format. Search, therefore, e.g. on the manufacturer website after an available IGV update.
To make sure that your BIGWIG file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .BIGWIG file online - secure, fast, and no downloads needed.