Format
OPML File
Summary
- Name
- OPML File
- Version
- 1.*
- Identifiers
- PUID: fmt/1882
- Format type
- Text (Mark-up)
- Description
- OPML (Outline Processor Markup Language) files are an XML format developed to enable exchange of lists of internet web feeds (e.g. RSS feeds) between between different web feed aggregators, regardless of their operating system. OPML files have <opml version="x"> near the start, then contents mainly divided into <head> and <body> sections. It was developed in the early 2000s, and is still commonly used for backing up or sharing RSS feeds.
- Note
- Specification: https://web.archive.org/web/20160304125338/http://dev.opml.org/spec1.htm
- File extensions
-
opml - Source
- Digital Preservation Department / The National Archives
- Developed by
- opml.org / opml.org
- Supported by
- opml.org / opml.org
Relationships
- Has priority over
Internal signatures
OPML File v.1.*
- Note
- Absolute from BOF, magic bytes: <?xml version="1.0" encoding="UTF-8"?><opml version="1.{1}"><head><title>{0-300}</title></head><body> EOF, offset 0-4:</body>(0-4)</opml>
Byte sequences
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 4
- Byte Sequence
3C2F626F64793E{0-4}3C2F6F706D6C3E- Endianness
- None
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
3C3F786D6C2076657273696F6E3D22312E302220656E636F64696E673D225554462D38223F3E3C6F706D6C2076657273696F6E3D22312E{1}223E3C686561643E3C7469746C653E{0-300}3C2F7469746C653E3C2F686561643E3C626F64793E- Endianness
- None
Changelog
-
Added in V114
- Release date
- 22 August 2023
OPML File 1.*: Signature researched and samples provided by Digital Preservation Department, The National Archives (UK).
OPML File 1.*: Full entry added. Submitted by Digital Preservation Department, The National Archives (UK).