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Glossary
MP4 is a multimedia container that can hold video, audio, subtitles, and metadata. Learn what MP4 means, how it differs from MPEG-4, and why it’s the default for streaming, editing, and sharing.
Glossary
OGG is an open, patent-free audio container often paired with the Ogg Vorbis codec. Learn what it is, how it compares to MP3/FLAC, iPhone support, and how to convert it.
Glossary
Discover whats behind MP3 compression, its rise to a global standard, and how it compares to WAV and AAC for quality and efficiency.
Knowledge Base
FLAC and WAV both deliver lossless audio, but they’re built for very different workflows. Here’s what actually matters beyond the audiophile debates.
Glossary
Learn what a HEIC file is, why iPhones use the HEIC image format, how to open HEIC files on Windows or Mac, and how to convert HEIC to JPG or PNG.
Knowledge Base
The best e-reader for file-type flexibility depends on your library. Kindle supports Amazon’s AZW and PDF formats, while Kobo, PocketBook, and Onyx Boox handle open standards like EPUB, MOBI, and CBR. For the broadest compatibility, Kobo and PocketBook offer the greatest freedom.
Glossary
Learn what a ZIP file is, what .zip files are used for, and how to open, extract, and create ZIP archives on Windows, Mac, and mobile — including the easiest way to open ZIP files on iPhone.
Knowledge Base
Learn how to zip and unzip files on Windows, macOS, Android and iOS, when ZIP compression isn’t enough, and how Documents.io can shrink big PDFs, images and videos without installing extra software.
Knowledge Base
A practical guide to mobile file conversion: iPhone and Android workflows, the best file converter apps, offline options, supported formats, and safety tips for web converters.
