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.
Convert your RTF documents into MOBI format to seamlessly read your files on Amazon Kindle devices. This tool is essential for authors and students who need to adapt text-based manuscripts for e-ink readers.
RTF (Rich Text Format) is a versatile document standard designed for cross-platform text exchange, maintaining basic formatting, fonts, and styles. MOBI is a proprietary ebook format optimized for Kindle reading devices, focusing on reflowable text and metadata support. When you convert RTF to MOBI, our engine translates the structural elements of your document into the Kindle-compatible markup, ensuring your text remains readable and correctly indexed for your device's library.
The conversion process is lossless, meaning all your original text, paragraph structures, and formatting are preserved exactly as they appeared in the source RTF file.
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
