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FictionBook FB2 to HTML Converter

FictionBook FB2 XML is parsed by fb2-ir and exported as HTML for fb2-to-html.

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Free without signing in: 10 server conversions per day, 10 MB each. Browser-only conversions stay on this device and do not count against server limits.

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Supported formats

.fb2 → .html, .htm

Conversion engine

fb2-ir

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Pair-specific

Features & use cases

Features

  • FictionBook FB2 XML is parsed by fb2-ir and exported as HTML for fb2-to-html.
  • Book title and paragraph text are extracted from the FictionBook tree in reading order.
  • FB2 metadata, binaries, cover images, annotations, poems, and rich inline styling are simplified by the lightweight IR.
  • HTML output contains readable prose rather than a full ebook package.

Use cases

  • Prepare FB2 files for tools that expect HTML.
  • Create reviewable samples for support tickets, tests, and data handoffs.
  • Batch recurring file chores while keeping warnings attached to each output.
  • Normalize partner or archive files without installing desktop conversion software.

See real results

Original

Orders.xlsx

Orders
Order IDCustomerTotalPaidShip date
1001Northwind Ops1294.50TRUE2026-09-03
1002Atlas Finance488.75FALSE2026-09-04
1003Studio Blue73.10TRUE2026-09-05
Sheet tab: Orders

Converted

Pretty preview

Order ID,Customer,Total,Paid,Ship date
1001,Northwind Ops,1294.5,true,2026-09-03
1002,Atlas Finance,488.75,false,2026-09-04
1003,Studio Blue,73.1,true,2026-09-05
3 rows
values only
0.4 s
in-browser
Try this conversion

What actually changes

FictionBook FB2 XML is parsed by fb2-ir and exported as HTML for fb2-to-html.
Book title and paragraph text are extracted from the FictionBook tree in reading order.
FB2 metadata, binaries, cover images, annotations, poems, and rich inline styling are simplified by the lightweight IR.
HTML output contains readable prose rather than a full ebook package.
The converter does not use Calibre for these lightweight FB2 extraction routes.

Example

input
<FictionBook><description><title-info><book-title>Dune Notes</book-title></title-info></description><body><section><p>Fear is the mind-killer.</p></section></body></FictionBook>
output
<h1>Dune Notes</h1><p>Fear is the mind-killer.</p>

Do it in code

cli
python -m ftc_fb2 input.fb2 output.html

FAQ

Does FB2 to XML change my file?

This route extracts readable content rather than preserving the full XML file.

Are cover images exported?

No. The fb2-ir extractor focuses on title and paragraph text, not embedded binary cover images.

Is this a full ebook conversion?

No. Use Calibre-backed ebook pairs when you need EPUB, MOBI, AZW3, or DOCX-style ebook conversion.

Will poetry and notes be exact?

Special FB2 structures may be flattened to paragraphs, so review output for literary formatting.

Does this run in the browser?

No. FB2 extraction runs in the server conversion pipeline for consistent XML parsing.

Related conversions

CSV to HTMLTSV to HTMLTXT to HTMLJSON to HTMLJSONL to HTMLYAML to HTMLXML to HTMLXLSX to HTMLXLS to HTML

Everything you need

Browser-first privacy

CSV, JSON, XML, YAML, XLSX, and table conversions run locally when the source and target formats support it.

Warnings, not surprises

Formula drops, flattened arrays, sheet selection, and layout changes are surfaced as conversion warnings.

Batch and zip

Queue multiple files, download individual results, or package them into a zip for handoff.

API, CLI, MCP

Convert from browsers, scripts, automations, and AI assistants with the same warnings and outputs.

Team workspaces

Shared history, API keys, limits, and retention settings keep production conversions controlled.

Retention you control

Browser files never upload; server inputs auto-delete within 24 hours and outputs follow workspace retention.

Comparison

Why teams switch

Decision point
FileTypeConverters
Upload-only converters
Where data files are processed
CSV, JSON, YAML, XML, and spreadsheet files can convert in your browser.
Most tools upload every file to their servers first.
What you learn about fidelity
Warnings call out flattened arrays, dropped formulas, selected sheets, and layout changes.
Downloaded files often arrive with no explanation of what changed.
Batch + zip
Batch files and download individual results or one zip.
Batching is often paid-only or missing.
API, CLI, and MCP
Use the web app, automation, or an AI assistant with the same conversion behavior.
Many converters are web-form only.
Retention control
Browser files never upload; server inputs are deleted within 24 hours.
Retention is usually unclear or not configurable.
Price
Start with free browser conversion and clear paid limits.
Limits are often hidden behind upload steps or subscriptions.

Where data files are processed

FileTypeConverters: CSV, JSON, YAML, XML, and spreadsheet files can convert in your browser.

Upload-only converters: Most tools upload every file to their servers first.

What you learn about fidelity

FileTypeConverters: Warnings call out flattened arrays, dropped formulas, selected sheets, and layout changes.

Upload-only converters: Downloaded files often arrive with no explanation of what changed.

Batch + zip

FileTypeConverters: Batch files and download individual results or one zip.

Upload-only converters: Batching is often paid-only or missing.

API, CLI, and MCP

FileTypeConverters: Use the web app, automation, or an AI assistant with the same conversion behavior.

Upload-only converters: Many converters are web-form only.

Retention control

FileTypeConverters: Browser files never upload; server inputs are deleted within 24 hours.

Upload-only converters: Retention is usually unclear or not configurable.

Price

FileTypeConverters: Start with free browser conversion and clear paid limits.

Upload-only converters: Limits are often hidden behind upload steps or subscriptions.

Choose your plan

Free

$0/mo

50 conversions/month

  • 50 conversions/mo
  • 25 MB max file
  • No signup required
Get started

Starter

POPULAR

$8.99/mo

For regular conversion work

2-day trial for paid plans

  • 500 conversions/mo
  • 100 MB max file
  • API + MCP
Start free trial

Pro

$29.99/mo

For heavy teams

  • 5,000 conversions/mo
  • 1 GB max file
  • API + MCP
Start free trial