TXT → EPUB reads the text as lightweight Markdown, so blank lines make paragraphs and dash or bullet lines make lists, but the book has no title unless you give it one.
From real runs
| Element | Result | What happens |
|---|---|---|
| Paragraphs | Changed | Lines separated by a blank line became paragraphs; consecutive single lines were joined, so ARR, $4.1M and $4.9M ran together into one sentence. |
| Lists | Kept | Two lines starting with a bullet character became an unordered list and the lines starting 1. and 2. became an ordered list in the chapter XHTML. |
| Headings | Changed | A line followed by a row of dashes was read as a level-2 heading, which turned the words Metric, Q2 and Q3 into a chapter entry named Metric Q2 Q3 in the table of contents. |
| Book title | Lost | The first line of the text is not promoted to a title; the EPUB has no dc:title and readers show the file name or UNTITLED. |
| Metadata | Changed | Language is set to en-US and the modification date to 1970-01-01; there is no author, cover or identifier beyond a generated UUID. |
| Structure | Kept | The output is a valid EPUB 3.0 package with a navigation document, a title page and one chapter file, 5,350 bytes for 440 bytes of text. |
| Encoding | Kept | UTF-8 text including the em dash and the middle dot survived; files in other encodings should be converted to UTF-8 first. |
Lines separated by a blank line became paragraphs; consecutive single lines were joined, so ARR, $4.1M and $4.9M ran together into one sentence.
Two lines starting with a bullet character became an unordered list and the lines starting 1. and 2. became an ordered list in the chapter XHTML.
A line followed by a row of dashes was read as a level-2 heading, which turned the words Metric, Q2 and Q3 into a chapter entry named Metric Q2 Q3 in the table of contents.
The first line of the text is not promoted to a title; the EPUB has no dc:title and readers show the file name or UNTITLED.
Language is set to en-US and the modification date to 1970-01-01; there is no author, cover or identifier beyond a generated UUID.
The output is a valid EPUB 3.0 package with a navigation document, a title page and one chapter file, 5,350 bytes for 440 bytes of text.
UTF-8 text including the em dash and the middle dot survived; files in other encodings should be converted to UTF-8 first.
We converted our Plain text sample (440 B) with Document engine on 2026-09-11. It took 99 ms and produced a 5 KB EPUB file, 12× larger than the input. The engine raised no warnings.
Input · sample.txt · 440 B
13 non-empty lines, 71 words
Output · sample.epub · 5 KB
EPUB 3.0: 3 content documents, 0 images, EPUB 3 nav, no cover
Pandoc
pandoc in.txt -f markdown -t epub3 --metadata title="My Book" --metadata author="Name" -o out.epubPass title and author explicitly; plain text carries no metadata and readers file untitled books badly.
Calibre
ebook-convert in.txt out.epub --title "My Book" --authors "Name" --chapter-mark noneCalibre's txt input has its own heuristics for paragraphs and may insert page breaks on blank lines.
The HTTP API and the MCP server run the exact engine this page uses (Document engine); the response carries the same warnings the web converter shows. Check support first with GET /api/v1/pairs?from=txt&to=epub.
curl -X POST https://filetypeconverters.com/api/v1/convert \
-H "Authorization: Bearer $FTC_API_KEY" \
-F "file=@input.txt" -F "from=txt" -F "to=epub" \
--output output.epubPlain text has no metadata field, and the first line is treated as an ordinary paragraph. Add a line starting with % Title at the top, or set the title in a reader app after import.
Single line breaks are treated as soft wraps and joined, as in Markdown. Leave an empty line between blocks that should stay separate.
Start chapter titles with # or underline them with a row of dashes or equals signs. Each level-1 heading becomes its own chapter file and a table-of-contents entry.
Yes. Lines starting with a bullet character, a dash or an asterisk become an unordered list, and lines starting with 1. become an ordered list.