ByteCutter

ByteCutter splits large files into smaller parts you can send anywhere, and puts them back together on any iPhone, iPad or Mac. Email, chat apps and USB drives all have size limits. With ByteCutter you split a video, an archive or a backup into parts of the right size, send them however you like, and the recipient rebuilds the original file with a tap. SPLIT AND MERGE • Split any file by part size or by number of parts, with a simple step-by-step wizard • One-tap destinations: Email, Discord, WhatsApp, FAT32 drives, CD and DVD • Merge the parts back into the original file, verified piece by piece • Received parts open straight in ByteCutter from Files, Mail or Finder, even one at a time • Missing a part? ByteCutter finds it in a folder and adds it for you RELIABLE BY DESIGN • Every part carries a checksum: damaged or tampered parts are detected, never merged into a broken file • Constant memory use, even with files of many gigabytes • Free-space check before every operation BYTECUTTER PRO One-time purchase, no subscription. Works on iPhone, iPad and Mac and can be shared with Family Sharing. • Files of any size (the free version splits files up to 2 GB) • Password protection with AES-256 encryption • Split whole folders or several files at once • "Split File" action for Shortcuts, Siri and Spotlight MERGING IS ALWAYS FREE Whoever receives your parts can rebuild the file with the free version of ByteCutter. No account, no limits. Password-protected parts just need the password. PRIVATE BY DEFAULT Everything happens on your device. ByteCutter has no server and collects no data. Designed for iOS and macOS 26 with the new Liquid Glass look, and fully compatible with earlier versions.