FB2 to MHT Converter
Processing entirely on your device — large files may take a moment.
FictionBook 2 and MHTML Web Archive exist for different jobs: FB2 (FictionBook 2) is the e-book format of the Russian-speaking world and many indie e-reader apps: a single XML file with strict semantic markup — sections, titles, epigraphs, poems. Readers like FBReader and older PocketBooks prefer it. Convert MHT archives to PDF for clean printing, or extract the readable document from a saved page.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How FB2 compares to MHT
| FB2 | MHT | |
|---|---|---|
| Layout | Reflowable, semantic | Flowing, CSS-controlled |
| Editability | Any text editor (XML) | Plain-text editable |
| Structure | Strict FictionBook schema | Tag semantics |
| Best for | Russian-language & indie e-readers | Web pages and shareable documents |
How to convert FB2 to MHT
- 1
Select your files
Drag & drop your FB2 files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to MHT". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted MHT file individually, or grab everything at once as a ZIP archive.
About the FB2 format
FB2 (FictionBook 2) stores a whole book as one strictly-structured XML file: <section> for chapters, <title>, <epigraph>, <poem>, even <table>. That semantic rigour — not just styled text — is why FBReader, AlReader and older PocketBook devices favour it, and why conversions out of FB2 preserve the chapter tree cleanly.
Its weakness is reach: mainstream ecosystems (Kindle, Kobo, Apple Books, Google Play Books) do not accept it. Converting to EPUB moves the book into every modern reader; TXT/HTML covers plain reading, note-taking and long-term archiving.
+ Strengths
- ✓Strict semantic markup — chapters, poems, epigraphs
- ✓Single XML file, easy to validate and archive
- ✓Native to FBReader and many indie e-readers
! Limitations
- −Rejected by mainstream e-book ecosystems
- −Verbose XML makes files larger than EPUB
- −Metadata and cover support vary across apps
About the MHT format
HTML is the markup language of the web itself. A document is plain text decorated with tags that describe structure — headings, paragraphs, lists, links, tables, images — and browsers turn that structure into a rendered, styled page. It is both a format and a program target: CSS styles it and JavaScript makes it interactive.
As a document format, HTML's strength is universality: any device with a browser displays it, text stays selectable and searchable, and links make it navigable. Its weakness is that rendering depends on the surrounding CSS and viewport, so it is a flowing document, not a fixed-layout one — printing or archiving an HTML page is inherently an approximation.
+ Strengths
- ✓Displays on every device with a browser
- ✓Semantic structure: headings, links, tables, media
- ✓Text remains selectable, searchable and accessible
! Limitations
- −Final look depends on CSS and viewport
- −Not a fixed-layout or print format
- −Untrusted HTML must be sanitized before display
Why convert FB2 to MHT?
Think of it as moving your file to the container that fits the job. Rejected by mainstream e-book ecosystems MHT works differently: Displays on every device with a browser If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this FB2 to MHT converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for FB2 to MHT?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Is it legal to convert my FB2 ebook?
Converting ebooks you legitimately own for personal use is generally fine. Removing DRM protection is a separate legal question that varies by country — this tool does not and will not break copy protection.
Will chapters and the table of contents survive?
Chapter structure and internal links are carried over wherever MHT has a place for them. The converter follows the book's own structure rather than flattening it into one stream.