CONVERT
TEX → EPUB
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Fast, secure TEX to EPUB conversion. No registration required.
Opening note — TEX is a LaTeX source document, a programmable typesetting format for mathematical and technical writing. The EPUB you want is two clicks away. A TEX to EPUB conversion lets you reuse the file in a different workflow. EPUB eBook is easier to share or edit than LaTeX Document for most destinations, and the round trip preserves the important content. Upload above to start; advanced options cover resolution, quality and metadata. In practice TEX is a LaTeX source document, a programmable typesetting format for mathematical and technical writing. On the other end, EPUB is the open IDPF ebook standard, a ZIP of HTML and CSS supported by every modern e-reader.
LaTeX Document
Source formatLaTeX is a document preparation system for high-quality typesetting of scientific papers.
EPUB eBook
Target formatEPUB is the open standard for reflowable digital books. It adapts text to any screen size and is supported by most e-readers except Kindle. EPUB 3 adds support for multimedia and interactivity.
Why convert TEX to EPUB
Sending TEX to someone who expects EPUB regularly leads to errors or quality loss as the receiving software performs its own silent re-encode. Converting upstream lets you control the quality trade-offs rather than leaving them to an external tool.
HOW TO CONVERT
TEX → EPUB
Provide the file
Drag and drop or select a TEX file up to 25 MB. No account required on the free tier.
Run the conversion
We pick the right backend for this pair automatically and produce a EPUB that matches the source data exactly.
Retrieve the output
A download link appears as soon as the EPUB is ready. For batch jobs, you get a single ZIP download.
Common Use Cases
Share across platforms
Send EPUB files to anyone without worrying about whether they have the right software for TEX.
Embed in documents
Drop EPUB output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
EPUB often produces smaller files than TEX 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.
TEX vs EPUB — Strengths and limitations
What each format does best, and where it falls short.
TEX Strengths
- Unmatched mathematical typesetting — LaTeX equations look publication-quality.
- Separates content from formatting — update the style template, the document reflows.
- Reliable output — same .tex produces the same PDF anywhere.
- Mature ecosystem with thousands of packages (beamer, tikz, biblatex, hyperref).
- Free and open-source under Knuth's license.
Limitations
- Steep learning curve.
- Error messages are notoriously cryptic.
- Complex figures and tables require manual tweaking.
EPUB Strengths
- Open standard — no vendor lock-in, no DRM required.
- Reflowable text — adapts to any screen size, font size, or orientation.
- Rich typography via CSS, embedded fonts, and SVG.
- Accessibility-first: native support for screen readers, adjustable text, and alt-text.
- Universal across every non-Kindle ebook reader and library app.
Limitations
- Kindle does not support EPUB natively (Amazon wants you to convert to AZW3).
- Fixed-layout EPUBs (for children's books, comics) are awkward to author.
- Rendering quality varies between apps — some CSS works everywhere, some does not.
TEX vs EPUB — Technical specifications
Side-by-side comparison of the technical details.
TEX
- MIME type
- application/x-tex
- Extensions
- .tex, .ltx, .cls, .sty
- Engines
- pdfTeX, XeTeX, LuaTeX, ConTeXt
- Macro layer
- LaTeX, Plain TeX, ConTeXt
- Output
- DVI, PostScript, PDF
EPUB
- MIME type
- application/epub+zip
- Extension
- .epub
- Container
- ZIP archive
- Markup
- XHTML 1.1 (EPUB 2); HTML5 (EPUB 3)
- Standards
- IDPF/W3C EPUB 2.0.1, 3.0, 3.2, 3.3
| Specification | TEX | EPUB |
|---|---|---|
| MIME type | application/x-tex | application/epub+zip |
| Extensions | .tex, .ltx, .cls, .sty | — |
| Engines | pdfTeX, XeTeX, LuaTeX, ConTeXt | — |
| Macro layer | LaTeX, Plain TeX, ConTeXt | — |
| Output | DVI, PostScript, PDF | — |
| Extension | — | .epub |
| Container | — | ZIP archive |
| Markup | — | XHTML 1.1 (EPUB 2); HTML5 (EPUB 3) |
| Standards | — | IDPF/W3C EPUB 2.0.1, 3.0, 3.2, 3.3 |
TEX vs EPUB — Typical file sizes
Approximate file sizes for common scenarios.
TEX
- Short paper source 10-100 KB
- Thesis source with figures 500 KB - 10 MB
- Book source (multi-file) 5-50 MB
EPUB
- Novel (300 pages, text only) 200-800 KB
- Illustrated reference book 5-30 MB
- Fixed-layout children's book 30-100 MB
Quality & Compatibility
Fidelity depends on how close the two formats sit conceptually. Same-family conversions (document↔document, audio↔audio) keep the essentials intact. Cross-family jobs (image→video, text→PDF) reinterpret the source into a genuinely different artefact, so expect the EPUB to emphasise different attributes than the TEX.
Tips for Best Results
- If the TEX contains sensitive data, strip metadata in the EPUB export (toggle under Advanced) before sharing publicly.
- Conversion settings that look obscure (bitrate, colour profile, compression level) matter mostly for archival and professional workflows — defaults are fine for everyday use.
- Batch conversions share settings across every file in the job; set them once, apply to many.
Frequently Asked Questions
Yes. The free tier accepts files up to 25 MB without registration, email capture or watermarks; paid plans go up to 2 GB. Paid plans raise the size cap, enable batch conversions and provide a REST API for automation, but nothing on the free tier is quality-limited — the output is exactly the same as on any paid plan.
Uploads run over HTTPS, files are processed in isolated containers, and both the source TEX and the EPUB output are auto-deleted within two hours. No account is required, file contents are never logged, and KaijuConverter does not use uploads for AI training. The paid plan adds a signable data-processing agreement for regulated workflows.
Most files finish in well under a minute. Small images and documents are typically ready in a few seconds; large video or audio files scale roughly with duration. Upload speed from your network is usually the dominant factor, not server time.
Related comparisons
See these formats side by side to understand which fits your use case best.
Related Guides
EPUB E-Book Format: The Complete Technical Guide
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Read guideODT OpenDocument Text: The Complete Format Guide
Complete guide to ODT: OpenDocument package structure, ODF XML schema, styles vs direct formatting, compatibility with Word/LibreOffice/Google Docs, and converting ODT files.
Read guideRTF Rich Text Format: The Complete Technical Guide
Everything about RTF: file structure, control words, groups, character and paragraph formatting, compatibility across Word/LibreOffice/Google Docs, and how to convert RTF files.
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.