Shrinkray vs iMovie on iPhone

This is a workflow comparison, not a head-to-head speed or picture-quality test. Neither app can promise that every video will fit a tiny budget and keep all its detail.

If you already use iMovie, it may be all you need. Add your clip to a Movie project, finish editing, then use Share → Save or Share Video → Options to choose a lower resolution. Save the copy and check its size before sending.

Apple’s instructions describe the latest workflow for iPhone 12 or later with iOS 26 or later. Earlier versions can also compress video, but steps and choices may differ.

A lower resolution can reduce detail. Resolution alone does not determine the final size: duration, motion, audio, and encoding also matter.

Start in Shrinkray or the Photos or Files share sheet. Compress the original, compare the sizes, preview the copy, and share it. One item at a time is free with the included settings.

With Pro, choose a custom size below the destination’s cap. Leave room for other attachments and check the result. A long video may need a lower quality setting, splitting, or a download link. Follow the target file size guide for that decision.

Shrinkray processes media on your iPhone and leaves your originals untouched. Sending a copy still uses your chosen messaging, email, or storage service.

1. Start each export from the same original, not a previously compressed copy.
2. Keep the full duration and check whether sound is present.
3. Record the file size and settings for each export.
4. Watch moving subjects and zoom in on text. Compare at the size your recipient will view it.

Choose the copy that fits and looks good enough for its purpose. For a transparent encoder example with downloadable files, see our compression measurements and method. Those examples do not measure iMovie or iPhone processing speed.