Adobe's open camera-RAW format — the one RAW variant that isn't tied to a single camera brand.
DNG (Digital Negative) is a camera RAW format Adobe published in 2004 as an open, documented alternative to the dozens of proprietary RAW variants each camera maker maintains — CR2, NEF, ARW, and the rest. Like any RAW file, a DNG holds close to unprocessed data straight from a camera's image sensor, preserving more shadow and highlight detail than a JPEG shot at the same time, but because Adobe published the specification, any software can add DNG support without reverse-engineering it, unlike brand-specific formats. iPhone's ProRAW photos are saved as DNG, and several camera makers (Leica and Pentax among them) ship DNG as their native RAW format rather than inventing their own. Photographers also use free tools to convert other brands' RAW files into DNG specifically so the file stays readable by future software without depending on a manufacturer that might drop support. Whatever its origin, a DNG file is still a working file meant for editing, not for sharing, so it eventually gets converted into JPEG or another common format once the edit is finished.
iPhone and iPad open DNG natively in Photos, including ProRAW files captured on Pro models. Mac Preview and professional tools like Lightroom read it directly. Most Android photo apps, many web browsers, and most upload forms cannot open a DNG file at all.
A DNG file, ProRAW or otherwise, will not open in most photo apps, upload forms, or messaging tools the way a JPEG does. Converting on-device turns an editing-stage RAW file into something that is ready to send, post, or print.
Filemorph can convert DNG to JPG on-device — the standard next step once editing on a RAW or ProRAW file is done and it needs to be shared.
Filemorph converts .dng files entirely on-device on iPhone, iPad and Mac — no upload, no account, and it works in Airplane Mode.
Relevant operations in Filemorph:
ProRAW is Apple's name for the RAW photos an iPhone Pro camera can capture, and those photos are saved in the DNG format. Every ProRAW file is a DNG, though not every DNG comes from an iPhone — Leica and Pentax, for instance, use DNG as their native camera format.
Editing tools handle DNG for adjusting exposure and color, but sharing, printing, or uploading a DNG file directly rarely works since most apps outside dedicated photo editors do not open RAW formats. Converting to JPEG or another common format afterward makes the finished photo shareable.
No. Filemorph converts DNG files, ProRAW included, entirely on the iPhone or iPad — the original sensor data never leaves the device, and the conversion works the same in Airplane Mode.