Extract text from Genomic annotation files (GFF3)
To convert GFF3 Annotations to another format, you need IGV or other Data software.
To convert other file formats to the "Bioinformatics Data Format" file type, you need software like IGV or a similar tool.
The .GFF3 (Generic Feature Format version 3) file is a standard, tab-delimited text file used in bioinformatics to describe genes and other genomic features. Maintained by the Sequence Ontology Project, researchers use it to annotate biological sequences and share genomic data across genome browsers and pipelines. You can view these files using specialized tools like the Integrative Genomics Viewer (IGV) or parse them programmatically via libraries like Biopython.
Despite being standard, .GFF3 files present serious everyday challenges. They are heavily structured and often massive in size, frequently exceeding several gigabytes. Because they rely on strict nine-column formatting with complex key-value attribute tags, opening a large .GFF3 file in a standard spreadsheet processor like Microsoft Excel usually crashes the software or truncates the data. Furthermore, these files are often distributed in compressed form (relying on GZIP formatting internally) to save bandwidth, making them completely unreadable without extraction first.
Users often need to convert .GFF3 files into lighter, more flexible formats like CSV, JSON, or BED. Converting to BED simplifies the data for specific genome tracks but permanently discards complex attribute metadata. Exporting to CSV allows for easier filtering in data science tools like Pandas.
Standard online converters frequently fail to process .GFF3 files because of their extreme size or unexpected internal compression. Even if the file uses complex custom tags inside the attribute column, our system can analyze the raw text to extract usable information.
Convert.Guru analyzes your GFF3 file, detects the exact format, and lets you read the text inside.
Users also converted GFF, GBFF, TXT, ANN, ANNOT, BED, GENBANK, FASTA, GBK and CSV files.
If you want to convert GFF3 file to BED, GENBANK, FASTA, GBK or CSV, you can use IGV or similar software from the "Genomic feature annotation data" category. In the File menu, look for Save As… or Export….
To convert files to GFF3, try IGV or another comparable tool in the "Genomic feature annotation data" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GFF3 converter.