CONVERT PPTX → TXT (PPTX to TXT)
Fast, secure PPTX to TXT conversion. No registration required.
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Studio Panel
Ghostscript + QPDFHOW TO CONVERT PPTX → TXT
Provide the file
Drag and drop or select a PPTX 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 TXT that matches the source data exactly.
Retrieve the output
A download link appears as soon as the TXT is ready. For batch jobs, you get a single ZIP download.
A PPTX file is a ZIP archive containing XML documents, embedded media, theme data, slide layouts, and binary assets such as images and fonts. When you extract only the text from it, you are pulling the content of the drawing-layer XML nodes — specifically the `<a:t>` elements inside `<p:sp>` shape containers — and discarding everything else: transitions, animations, master slides, speaker notes (unless explicitly extracted), charts rendered as vector graphics, and any text embedded inside images or SmartArt paths. The output is a flat sequence of Unicode strings, one logical run per line, with no structure beyond what the extractor chooses to impose. Users convert PPTX to TXT when they need to feed slide content into a pipeline that cannot parse Open XML: indexing tools, grep-based search, diff workflows comparing deck versions, LLM context windows, accessibility audits, or corpus-building for NLP. The conversion also strips all proprietary formatting, making the text portable to any editor, terminal, or database without a Microsoft Office dependency.
Why convert PPTX to TXT
The dominant reason is content extraction without a rendering dependency. A PPTX file cannot be reliably read as plain text by standard Unix tooling, Python string operations, or database full-text indexers — the XML envelope and binary parts get in the way. Converting to TXT lets teams run keyword searches across hundreds of decks, compare slide text across versions with standard diff, feed content to translation memory tools (CAT tools that accept plain text), or ingest slide copy into a CMS. A secondary reason is reducing file size: a simple five-slide deck may weigh several megabytes because of embedded images and theme assets; the TXT equivalent is kilobytes.
PPTX vs TXT — Technical specifications
Side-by-side comparison of the technical details.
PPTX
- MIME type
- application/vnd.openxmlformats-officedocument.presentationml.presentation
- Container
- ZIP (Office Open XML)
- Standard
- ISO/IEC 29500, ECMA-376
- Released in
- Microsoft Office 2007
- Legacy predecessor
- .ppt (binary OLE, 1987-2007)
- MIME Type
- application/vnd.openxmlformats-officedocument.presentationml.presentation
- Extension
- .pptx
- Category
- Presentations
- Full Name
- PowerPoint Presentation
- Conversion Engine
- LIBREOFFICE
TXT
- MIME type
- text/plain
- MIME Type
- text/plain
- Extension
- .txt
- Category
- Documents & Text
- Full Name
- Plain Text
- Conversion Engine
- LIBREOFFICE
- 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 | PPTX | TXT |
|---|---|---|
| MIME type | application/vnd.openxmlformats-officedocument.presentationml.presentation | text/plain |
| Container | ZIP (Office Open XML) | — |
| Standard | ISO/IEC 29500, ECMA-376 | — |
| Released in | Microsoft Office 2007 | — |
| Legacy predecessor | .ppt (binary OLE, 1987-2007) | — |
| MIME Type | application/vnd.openxmlformats-officedocument.presentationml.presentation | text/plain |
| Extension | .pptx | .txt |
| Category | Presentations | Documents & Text |
| Full Name | PowerPoint Presentation | Plain Text |
| Conversion Engine | LIBREOFFICE | LIBREOFFICE |
| 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 |
PPTX vs TXT — Strengths and limitations
What each format does best, and where it falls short.
PPTX Strengths
- ~75% smaller than the legacy binary .ppt thanks to ZIP compression.
- Human-readable XML inside — easy to script, patch, or diff.
- Cross-compatible with Keynote, Google Slides, LibreOffice Impress (with minor drift).
- Preserves master slides, themes, animations, notes, and embedded media.
- ISO/IEC 29500 standardized — vendor-independent on paper.
Limitations
- Animations and transitions often render differently outside Microsoft PowerPoint.
- Embedded fonts and media balloon file sizes rapidly.
- Complex layouts drift subtly when round-tripped through non-Microsoft editors.
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.
Quality & Compatibility
Text preserved: all characters from text-run nodes in slide shapes, including Unicode, RTL scripts, and combining characters, provided the extractor handles XML encoding correctly. Text lost: any string embedded as a path inside a vector shape, text rendered inside chart labels that live in chartSpace XML rather than slide XML, and text inside linked (not embedded) objects. Speaker notes are in a separate XML part and may or may not be included depending on the tool. Formatting is entirely lost: bold, italic, font size, color, and paragraph alignment have no representation in plain TXT. Slide order is preserved only if the extractor iterates slide parts in presentation.xml slide-reference order; out-of-order extraction is a known bug in naive implementations. No alpha channel, color space, or bit-depth considerations apply — TXT carries only codepoints.
Tips for Best Results
- Verify that the extractor reads slide parts in the order defined by the relationship list in ppt/presentation.xml, not filesystem order inside the ZIP — ZIP entry order is not guaranteed to match slide sequence, so a naive glob of ppt/slides/slide*.xml can scramble your output.
- Speaker notes live in ppt/notesSlides/ as separate XML parts linked via .rels files; if you need them included in the TXT output, confirm the tool explicitly traverses those relationships rather than only processing slide shapes.
- Text inside grouped shapes (p:grpSp) is nested one level deeper in the XML tree; converters that only walk top-level sp elements will silently drop any text placed inside a group — check your output against a known slide that uses grouped objects.
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 PPTX and the TXT 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.
PowerPoint Presentation
Source formatPPTX is the modern Microsoft PowerPoint format based on Open XML. It is the standard for business and educational presentations, supporting slides, animations, transitions, and embedded media.
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.
Common Use Cases
Share across platforms
Send TXT files to anyone without worrying about whether they have the right software for PPTX.
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 PPTX 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.
PPTX vs TXT — Typical file sizes
Approximate file sizes for common scenarios.
- Simple 10-slide deck (text only) 50-200 KB
- Typical corporate deck with images (30 slides) 2-20 MB
- Deck with embedded 4K videos 100-500 MB
- Short note < 1 KB
- README file 2–20 KB
- Full novel (~90,000 words) 500 KB – 1 MB
Sensitive Documents, Scanned OCR, or 500+ Pages?
For legally sensitive archives that must never leave your local network, or multi-hundred page scanned PDFs needing optical character recognition, local document workstations ensure full compliance.
One-time payment with zero recurring commitment: convert files up to 1 GB, OCR, PDF/A, and .ZIP batches for 24 hours.
Full 7 days of unlimited conversions, up to 2 GB per file, 100% ad-free with zero subscription.
High-throughput enterprise pipeline for files up to 2,048 MB, 50-file batches, ISO PDF/A, and priority processing.
Offline conversion for multi-hundred page contracts, spreadsheets, and local optical extraction.
High-accuracy legal OCR, certified PDF/A archiving, and compliant document redaction.
Related comparisons
See these formats side by side to understand which fits your use case best.
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