How to Convert FB2 to LRF — Quick & Free
Fast, instant FB2 to LRF conversion. No signup required. Just drop your .fb2 file and get .lrf in seconds.
Batch Settings
FB2形式の電子書籍を、かつて多くの電子リーダーで親しまれたLRF形式へ変換するサービスへようこそ。大切な蔵書を、思い出深いデバイスで再び楽しみたい、あるいは特定の環境でしか開けないファイルを互換性のある形式にしたい、とお考えの方もいらっしゃるでしょう。この変換ツールは、そうした皆様のニーズに応えるために開発されました。複雑な設定は一切不要。お手持ちのFB2ファイルをアップロードするだけで、瞬時にLRF形式へと変換されます。忙しいビジネスシーンでの資料整理から、趣味の読書まで、幅広い用途でご活用いただけます。ぜひ一度、その手軽さと確実性をお試しください。
- 古いSony Readerでの読書
- 同人誌のフォーマット変換
- ビジネス文書のアーカイブ
LRF形式は、特にソニーの電子書籍リーダーが普及していた時期に日本でも広く利用されました。そのため、過去のコンテンツ資産を現代の環境で再活用する際に、この変換が役立つことがあります。
About FB2 to LRF Conversion
Short answer: yes, you can convert FB2 to LRF online for free, and quality is well preserved with the right settings. Just upload your .fb2 file to CocoConvert, pick LRF as the output, and click Convert. The whole process takes seconds.
Now for the details. FB2 (FictionBook) is an XML-based e-book format popular in Russia and Eastern Europe. LRF is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your FB2 file is decoded and re-encoded as LRF. Converting FB2 to LRF maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert FB2 to LRF
- 1
1. Upload FB2
Drop your .fb2 file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select LRF
Choose .lrf from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .lrf file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert FB2 to LRF
Your FB2 file is decoded and re-encoded as LRF.
Your FB2 file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in LRF format
The converted file is ready for download
Format Comparison
FB2
.fb2 file
| Extension | .fb2 |
| MIME Type | application/x-fictionbook+xml |
| Category | eBook |
LRF
.lrf file
| Extension | .lrf |
| MIME Type | application/x-sony-bbeb |
| Category | eBook |
Should You Convert FB2 to LRF?
When to Convert
- ✓When you need a LRF file
Frequently Asked Questions
Is FB2 to LRF conversion free?
Yes. CocoConvert offers free FB2 to LRF conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is FB2 to LRF conversion?
Most files convert in 2–10 seconds depending on size. Large ebook files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded FB2 file and the converted LRF file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting FB2 to LRF lose quality?
Converting FB2 to LRF maintains high quality with CocoConvert's optimised encoder settings.
Can I convert LRF back to FB2?
Yes, CocoConvert supports LRF to FB2 conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.