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FB2 at a glance
FB2
FB2 became especially visible in Eastern European ebook ecosystems, where community standards and open library habits shaped ebook distribution differently from Kindle or EPUB-first markets.
SRF at a glance
SRF
Before ARW became the better-known Sony raw family, Sony's raw ecosystem already included older variants that modern tools still need to decode correctly.
Format comparison
| Feature | FB2 | SRF |
|---|---|---|
| File type | Ebook | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2004 | 2003 |
| Inventor | Russian eBook community | Sony |
| Status | active | proprietary |
| Primary use cases |
|
|
When to use each format
When to use FB2
- Your source file is already in FB2.
- Preserve source expectations before exporting to SRF.
- FB2 is commonly used in ebook workflows.
When to use SRF
- Your target workflow expects SRF.
- Improve delivery compatibility with SRF.
- SRF is commonly used in image workflows.
FAQs
Why convert FB2 to SRF?
Convert to SRF when preserving older Sony originals or keeping a legacy Sony raw library intact.
It is useful for archive recovery and compatibility workflows.
What changes when converting FB2 to SRF?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting FB2 to SRF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.