Digital Imaging Technicians
Card in, pick destination, start. You end up with a complete handover package of MHL, PDF report and metadata export – no hunting around, no manual logging.
Mobile data backup for the set
Back up camera cards.
Back up camera cards.
Verified. No laptop.
Offloadr copies your footage from camera card or photo library to SSD and NAS – as fast as your hardware allows. Every file is hashed and verified individually: "SAFE TO FORMAT" only appears once everything truly checks out. Right on your iPhone and iPad.
ASC MHL v2 – compatible with
YoYotta
Hedge / OffShoot
Silverstack Lab
Pomfort
What is Offloadr
The offload workflow that fits on an iPad
On set, every minute counts. When the card is full, the footage has to be secured – fast, fully documented and with no anxious moments before formatting. Professional DIT software used to be expensive, desktop-bound or too cumbersome for daily set use. Offloadr puts the complete offload workflow on the device already in your bag – with no compromise on safety or functionality.
Who it's for
Built for everyone who can't afford to lose footage
Camera operators & solo filmmakers
No laptop setup required: one iPad, one SSD over USB-C – that's your entire mobile backup workflow. On set, in the van, in the hotel room.
Photographers with large RAW volumes
Back up DNG, HEIC and JPEG straight from your photo library to NAS or SSD – verified, with metadata export. The notebook stays home.
What makes Offloadr different
Honest verification. Real speed. Zero admin.
Honesty
"SAFE TO FORMAT" only appears when every single file on every destination has been verified. No sugar-coating, no silently carrying on after errors.
Speed
Direct C-level I/O with double buffering reads your SSD at its limit – over 1 GB/s on NVMe drives. Hashing runs in parallel with copying, adding no extra time.
Zero admin
After every offload, Offloadr automatically creates everything for a professional handover: MHL in the ASC standard, PDF report, metadata CSV and a full log – without lifting a finger.
In four steps
How an offload works
01
Pick source
Camera card, USB drive, individual files or straight from the Photos app.
02
Pick destination
External SSD, NAS, SMB network share – optionally a second destination for redundant backup.
03
Start offload
Offloadr copies, hashes and verifies fully automatically. In parallel, with no waiting.
04
Handover
Safe-to-Format confirmation, MHL, PDF report and metadata export land in the destination folder.
Highlights
The core of Offloadr – and what it's built for
Copy engine
Superfast transfers
Files keep getting bigger, cards and readers faster – the bottleneck must never be the software. Offloadr uses direct POSIX I/O with F_NOCACHE, bypassing the system's RAM cache. Every byte lands straight on the destination.
- Double buffering: reading, writing and hashing run in parallel
- Over 1 GB/s on NVMe SSDs via USB-C – considerably more with Thunderbolt on iPad Pro. Your hardware sets the limit, not the app
- xxHash-64 hashes at 15–20 GB/s on Apple Silicon – faster than any drive can deliver
Read speed compared
Verification, everywhere
"SAFE TO FORMAT" really means safe
After copying, Offloadr re-verifies every single file: the destination file is read back fresh from the destination medium, its checksum computed and matched against the source – no trusting write caches, no shortcuts. With two destinations, both checks run at the same time, saving up to 50% verification time.
- If a checksum doesn't match, the file is flagged as failed
- Even a single error keeps "Safe to Format" off – guaranteed
- Dual backup to two destinations, each verified independently
Verification · A001_0712
# source → dest A (SSD) + dest B (NAS)
A001_C012.mxf xxh64 match ✓
A001_C013.mxf xxh64 match ✓
A001_C014.mxf xxh64 match ✓
A001_C015.mxf xxh64 match ✓
# 128 / 128 verified · 0 errors
→ SAFE TO FORMAT
A001_C012.mxf xxh64 match ✓
A001_C013.mxf xxh64 match ✓
A001_C014.mxf xxh64 match ✓
A001_C015.mxf xxh64 match ✓
# 128 / 128 verified · 0 errors
→ SAFE TO FORMAT
Handover package
MHL, PDF report & metadata – automatic
There's no time for admin on set – so Offloadr does it for you. After every offload, everything for a clean handover sits in the destination folder. The MHL follows the ASC MHL v2 industry standard and can be re-verified with YoYotta, Hedge and Silverstack Lab.
- ASC MHL v2 with path, size and checksum per file
- PDF report with your logo for clients & post
- Metadata CSV (UTF-8 BOM) – opens directly in Excel & Numbers
Destination folder after offload
A001_0712.mhlASC MHL v2
Report_A001.pdfPDF
Metadata_A001.csvCSV · UTF-8
offload.logLOG
Technical details
For everyone who wants the specifics
Copy engine
Direct POSIX I/O (open/read/write) with F_NOCACHE. Double buffering: chunk A is written, chunk B read, hash for A computed in parallel.
Hash algorithms
xxHash-64 as the MHL v2 standard, up to 15–20 GB/s. SHA-256 hardware-accelerated for cryptographic checksums.
Verification
The destination file is re-read from the medium and compared to the source. Two destinations are checked simultaneously – up to 50% faster.
Live Activity
ActivityKit shows project name, progress, data volume and time remaining on the lock screen and in the Dynamic Island – live during the offload.
Network (SMB/NAS)
Any SMB share mounted via the Files app: Synology, QNAP, TrueNAS, Windows. Connection drops are detected instantly and logged.
Photos integration
Apple's PHPicker – privacy-friendly, without full library access. iCloud photos are downloaded automatically when needed.
| Category | Supported formats |
|---|---|
| Video | MOV, MP4, MXF, M4V, AVI, MKV – via AVFoundation |
| RAW video | R3D, ARRIRAW (.ari), Blackmagic RAW (.braw) – backed up & hashed |
| Photo / RAW | DNG, CR2, CR3, NEF, ARW, RAF, RW2, HEIC, JPEG, TIFF |
| Other | All file types are copied & hashed |
Privacy
No data, no cloud, no surprises
Offloadr was built from day one on a clear principle: what's shot on set stays on your devices. No account, no login, no tracking.
No data transfer to external servers. Offloadr runs completely offline.
No tracking, no ads, no user profiles, no analysis of your behaviour.
No account, no registration, no login. Just install and go.
Only necessary permissions via Apple's Security-Scoped Resources and PHPicker. Full Privacy Manifest.
FAQ
Frequently asked questions
Does Offloadr work without an internet connection?
Completely. Offloadr runs offline and never needs an internet connection – except when you want to download photos from iCloud or use a NAS destination over your local network.
Which camera cards can Offloadr read?
Any card the iPad recognises as a file system – CFexpress, SD (via adapter), USB-C card readers and more. Offloadr sees the content as a folder structure. You can also pick individual folders or files.
Can I write to two destinations at once?
Yes. Offloadr supports dual backup: a mandatory destination A and an optional destination B. Both are written simultaneously and then verified independently. Only when both match does the Safe-to-Format confirmation appear.
What does "Safe to Format" mean?
The green "Safe to Format" screen appears only once every single file has been copied successfully, its checksum computed on the destination and matched against the source checksum with no deviation. Only then can the source card be safely formatted. A single error keeps the confirmation off.
Does Offloadr support R3D or ARRIRAW files?
Offloadr copies and hashes all file types – including R3D, ARRIRAW (.ari) and Blackmagic RAW (.braw). They are fully backed up and verified. Technical metadata (codec, frame rate, camera model) can't be read for these formats, as that requires vendor-specific SDKs.
Can I use Offloadr for photos from my iPhone?
Yes. The built-in Photos integration lets you pick straight from your library – photos, videos, DNG RAWs, ProRes. Offloadr backs up the original files (not compressed previews) to your destination. iCloud photos are downloaded automatically on export.
Which NAS systems are supported?
Any NAS or network share that can be mounted as an SMB share via Apple's Files app: Synology, QNAP, TrueNAS, Windows shares and many more. Connect once in the Files app – then the drive is permanently available in Offloadr.
Can Offloadr run in the background?
Yes. Offloadr registers a background task so the offload keeps running with the iPad locked or in the background. The Live Activity keeps you posted. For very long offloads, keeping the device charged is recommended.