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 plain text files into the EPUB format for comfortable reading on e-readers and mobile devices. This tool is essential for authors and readers who need to transform raw notes or manuscripts into standardized digital books.
TXT files are simple, unformatted text documents that lack structure, fonts, or images. In contrast, EPUB is a versatile, reflowable document format designed for e-books. When converting from TXT to EPUB, our tool wraps your raw text into the EPUB container structure, enabling features like adjustable font sizes, table of contents creation, and dynamic layout adjustments that are impossible in a raw text document.
The conversion is lossless, meaning your text content remains perfectly intact during the process. Since TXT files contain no complex styling, the transition to EPUB preserves 100% of your information without degradation.
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
