Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Easily convert your PPTX presentation files into MOBI format for seamless reading on Kindle devices. This tool is perfect for users who want to review slide-based educational materials or corporate reports as e-books.
PPTX is a sophisticated slide-deck format developed by Microsoft, designed for visual presentations with complex layouts, images, and animations. In contrast, MOBI is a streamlined e-book format optimized for reflowable text and digital reading devices. When you convert PPTX to MOBI, our engine extracts the textual content and relevant structure from the slides, reorganizing them into a linear format compatible with e-readers, while preserving the integrity of the data.
The conversion process ensures that the content remains lossless, maintaining the full textual quality of your original presentation slides.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
