Upload your EPUB file using the picker above and the converter detects the source type and runs the EPUB → FB2 pipeline. The result downloads automatically when conversion completes; no account needed for one-off conversions.
EPUB 到 FB2 转换器免费吗?
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Yes — basic EPUB → FB2 conversion is free with no registration. Premium adds higher per-file size limits, more parallel batch workers, and removes ads.