Does converting lose my features?

No. Features, their locations including join and complement, and their qualifiers are carried through, and multi-segment CDS features stay multi-segment.

Can I open a GFF3 with no sequence in it?

Yes. A feature-only file opens on an unknown-base sequence spanning its features, so the annotations can be inspected and re-exported.

Record

File Format Converter

Read a file in one format and write it in another without a round trip through a server. Join and complement locations, qualifiers and multi-segment features survive the conversion, because the parsers were ported and tested against real files rather than written to a summary of the spec.

Open Export Image Open the Feature files sample

Nine real annotation files: GFF3 · GTF · BED · EMBL across three divisions and three molecule types, the 5′-UTR introns most parsers have never met, and the JBEI registry’s own XML

What it does

01Read GenBank, FASTA, FASTQ, EMBL, GFF3, GTF, BED, SnapGene .dna and JSON
02Write GenBank, FASTA, EMBL, GFF3, GTF, BED, JSON, and the two binary formats the tools that own them will not export to each other: SnapGene .dna and Serial Cloner .xdna
03Join and complement locations preserved, including multi-segment CDS features
04Feature-only files (GFF3, GTF, BED) opened on an unknown-base sequence spanning their features
05BED12 block columns expanded into multi-segment locations
06Qualifiers preserved on round trip
07What each target would drop stated before you download it, and a target the record cannot produce disabled with the reason
08Converted in the browser tab, with no upload and no project to create first

What it runs on

The parsers are ports of CGParse and the Teselagen bio-parsers, tested against the upstream corpora. The panel runs on @ports/protein.

Everything runs client-side. Files are parsed in the browser and projects are saved on this machine, so an unpublished sequence is never uploaded.

Questions

Does converting lose my features?: No. Features, their locations including join and complement, and their qualifiers are carried through, and multi-segment CDS features stay multi-segment.
Can I open a GFF3 with no sequence in it?: Yes. A feature-only file opens on an unknown-base sequence spanning its features, so the annotations can be inspected and re-exported.

Also searched as

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