CONVERT
HTM → TXT
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Fast, secure HTM to TXT conversion. No registration required.
Here is the short version — HTM is a legacy 8.3-filename variant of HTML, identical to .html in content. Hence the need for TXT. Converting HTM to TXT keeps the document's content but changes how it is distributed. HTML Document (short) may be the right editing format; Plain Text may be the right delivery format (or vice-versa). KaijuConverter renders the document through a LibreOffice + pandoc pipeline so headings, paragraphs, lists, tables, images and hyperlinks survive the round-trip intact. Background. HTM is a legacy 8.3-filename variant of HTML, identical to .html in content. Destination side, TXT is the plain-text format — just characters and line breaks, no formatting.
HTML Document (short)
Source formatHTM is an alternative extension for HTML files, functionally identical to .html. Common on older Windows systems.
Plain Text
Target formatTXT files contain unformatted plain text with no styling, images, or layout information. They are universally readable by any device and operating system, making them the simplest document format.
Why convert HTM to TXT
HTM and TXT both describe paginated text, but they target different parts of the document life cycle. HTM is usually editable; TXT is usually final. Converting is about moving from editing to distribution (or the other way round) without losing headings, styles, tables or embedded images along the way.
HOW TO CONVERT
HTM → TXT
Upload your HTM
Drop the document onto the uploader. We transfer over HTTPS and keep the file in an isolated processing container.
Render with LibreOffice
LibreOffice opens the HTM headlessly and writes it as TXT with styles, tables and images mapped across.
Download the TXT
The TXT is ready to download; typography, pagination and embedded assets match what you saw in the source.
Common Use Cases
Share across platforms
Send TXT files to anyone without worrying about whether they have the right software for HTM.
Embed in documents
Drop TXT output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
TXT often produces smaller files than HTM for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
HTM vs TXT — Strengths and limitations
What each format does best, and where it falls short.
HTM Strengths
- Identical content to .html in every respect.
- Universally supported by every browser and server.
- 8.3 compatibility for antique DOS/Windows shares.
Limitations
- No real reason to use .htm over .html in 2026.
- Inconsistent with modern naming conventions.
- Mixed extensions within one site confuse static-site generators.
TXT Strengths
- Universally readable — every operating system, every editor, every programming language.
- Zero metadata overhead: the file size equals the character count (for ASCII).
- Safe to diff, grep, version-control, and pipe through command-line tools.
- Immune to format obsolescence: a text file from 1970 still opens today.
- Tiny footprint for structured data like logs or configuration.
Limitations
- No styling, images, or embedded structure — just characters.
- Character encoding ambiguity (ISO-8859-1 vs UTF-8 vs Windows-1252) causes "mojibake".
- Line-ending differences between OSes still cause subtle bugs today.
HTM vs TXT — Technical specifications
Side-by-side comparison of the technical details.
HTM
- MIME type
- text/html
- Extension
- .htm
- Standard
- HTML Living Standard (WHATWG)
- Alias of
- .html
- Origin
- DOS 8.3 filename limit
TXT
- MIME type
- text/plain
- Common encodings
- UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252
- Line endings
- LF (Unix), CRLF (Windows), CR (classic Mac)
- Max file size
- Limited only by filesystem (no format-level limit)
- Structure
- None — flat sequence of characters
| Specification | HTM | TXT |
|---|---|---|
| MIME type | text/html | text/plain |
| Extension | .htm | — |
| Standard | HTML Living Standard (WHATWG) | — |
| Alias of | .html | — |
| Origin | DOS 8.3 filename limit | — |
| Common encodings | — | UTF-8, UTF-16, ASCII, ISO-8859-1, Windows-1252 |
| Line endings | — | LF (Unix), CRLF (Windows), CR (classic Mac) |
| Max file size | — | Limited only by filesystem (no format-level limit) |
| Structure | — | None — flat sequence of characters |
HTM vs TXT — Typical file sizes
Approximate file sizes for common scenarios.
HTM
- Legacy landing page 5-50 KB
TXT
- Short note < 1 KB
- README file 2–20 KB
- Full novel (~90,000 words) 500 KB – 1 MB
- Server log file (daily) 10 MB – 1 GB
Quality & Compatibility
LibreOffice handles the heavy lifting and maps the overwhelming majority of HTM features to their TXT equivalents. Standard system fonts (Arial, Calibri, Times, Helvetica) transfer exactly; corporate or custom fonts are substituted with the closest available match, which can shift line breaks by a character or two. Inline images embed at original resolution.
Tips for Best Results
- Embed fonts in the HTM before uploading if you use non-system fonts — it guarantees the TXT renders identically on any viewer.
- Check tables, figure captions and page headers after conversion; complex layouts occasionally need a minor nudge in the target application.
- For documents with a table of contents, refresh the TOC field after opening the TXT so page numbers reflect the new pagination.
Frequently Asked Questions
Yes, as long as the fonts are standard (system fonts or common office fonts like Arial, Calibri, Times, Helvetica). Custom corporate fonts survive if they are embedded in the source document; otherwise the conversion substitutes the closest available match, which can shift line breaks by a character or two.
Yes. Inline images are embedded into the TXT at full resolution, editable tables become native TXT tables, and hyperlinks keep their URLs. Complex features unique to HTM — macros, form fields, track-changes — are mapped where an equivalent exists in TXT and flattened into static content otherwise.
All uploads go over TLS, files are processed in isolated containers and both the source and the output are deleted within two hours. No account is required, file contents are never indexed or used for training, and the paid plan adds a signable data-processing agreement for regulated workflows.
Related comparisons
See these formats side by side to understand which fits your use case best.
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.