Convert your .pptx files to .html format online for free. No software to install. Fast, secure, and easy.
Free — 3 conversions per day
Drag and drop your .pptx file or click to browse.
Select HTML as your output format.
Click Convert and download your .html file.
Converting from PPTX (Office Open XML Presentation) to HTML (HyperText Markup Language) helps you publish content for the web. PPTX and HTML serve different purposes, and converting between them bridges the gap.
PPTX (Office Open XML Presentation, introduced in 2007) uses ZIP (containing XML slides, media, and relationships) compression. HTML (HyperText Markup Language, introduced in 1993) uses None (text-based; gzip-compressible in transit) compression. PPTX browser support: None (requires office application or online viewer). HTML browser support: Universal.
The quality impact depends on the specific settings used during conversion. HTML uses compression that may affect quality depending on the chosen settings.
Typical PPTX file size: A 30-slide deck with images: ~5-30 MB. Typical HTML file size: A single web page: ~20-100 KB (excluding external assets).
For the best conversion results, always start from the highest quality source file available. Converting from a previously compressed file compounds any existing compression artifacts. When in doubt, use higher quality settings — you can always re-convert at lower quality later, but you cannot recover quality that has been lost.
Convert PPTX to HTML with 3 free conversions per day. No hidden fees.
Create a free account in 10 seconds and start converting immediately. No credit card required.
Files are encrypted during transfer, processed on secure servers, and deleted immediately after conversion.
Convert files from any device — desktop, tablet, or phone. No software to install, works in any modern browser.
SquishConvert supports over 358 file conversion combinations across images, documents, audio, and video.
Your converted .html file maintains the best possible quality. No unnecessary compression or quality loss.
You get 3 free conversions per day. Upgrade to Pro for unlimited conversions.
Most files convert in under 10 seconds. Larger files may take a bit longer depending on size.
Yes. Files are encrypted during transfer, processed on secure servers, and deleted immediately after conversion. We never store your files.
Currently, SquishConvert converts one file at a time. Batch conversion is coming soon — stay tuned!
Free users can convert files up to 10 MB. Pro users can convert files up to 500 MB.