⚡ Quick Answer: What is PHPhotosErrorDomain Error 3302 & How Do You Fix It?
PHPhotosErrorDomain Error 3302 is an Apple PhotoKit framework exception officially mapped to invalidResource = 3302. It occurs when an app (like Pinterest, WhatsApp, Send Anywhere, or a custom app) tries to write a photo or video to your Photos library or Camera Roll, but Apple’s strict asset validation rejects the file payload.
- Core Technical Cause: Unsupported media codecs (such as animated AVIF, VP9, or unindexed audio streams in MP4 containers) or invalid local URI file references.
- Fast User Fix: Open Settings > [Affected App] > Photos and switch permissions from “None” or “Limited” to Full Access.
- Media Conversion Fix: Save the problematic file to the iOS Files app first, open it in an image converter, convert to standard JPEG or H.264/AAC MP4, then save to Camera Roll.
- Shared Album Bug: If failing inside shared albums on macOS/iOS, toggle iCloud Photos Sync off and on, or run the macOS Photos Library Repair Tool (hold Option + Cmd on launch).
- Storage Note: Error 3302 is not an out-of-space issue; insufficient disk space produces error 3305.
What Does PHPhotosErrorDomain Error 3302 Actually Mean?
In Apple’s development architecture, PHPhotosErrorDomain manages interactions between client applications and the local or cloud-tethered photo library via the PhotoKit API.
When an app issues an asset creation request via PHAssetChangeRequest.creationRequestForAssetFromImage(atFileURL:) or equivalent native bridges (e.g., @react-native-camera-roll), PhotoKit runs an immediate pre-flight integrity check. If the underlying media container fails validation, the operating system interrupts the pipeline and logs:
This validation failure specifically signifies that the binary data presented to the Photos daemon does not conform to the system’s accepted codec standards, metadata structure, or sandboxed file-path requirements.
The 4 Main Triggers Behind Error 3302
Extensive testing across iOS and macOS reveals four distinct root causes responsible for this error:
- 1. Incompatible Image/Video Codecs (AVIF, WebP, Non-AAC Audio): Many modern platforms (including Pinterest, Discord, and web scrapers) compress images using newer
.avifor specific extended.webpprofiles. While iOS browsers can render them on-screen, the PhotoKit system library often flags them as non-compliant asset resources upon export. Similarly, an MP4 containing an unsupported audio codec (such as AC3 or Opus) will instantly trigger 3302. - 2. Sandbox Permission Mismatches: Following Apple’s privacy hardening in recent iOS releases, apps granted “Add Photos Only” or “Limited Access” may fail silently during asset creation. Instead of displaying an informative permission prompt, the underlying framework surfaces error 3302.
- 3. Passing Remote URLs Instead of Cached Local Files (Developer Bug): In cross-platform applications (Flutter, React Native), developers often pass remote web URIs directly into
saveAsset()rather than writing the binary stream to a temporary local cache on disk first. PhotoKit cannot perform remote validation, throwing 3302 immediately. - 4. Stalled iCloud Shared Stream Handshake: When uploading to or downloading from an iCloud Shared Album, stale authorization tokens or corrupt synchronization locks can cause PhotoKit to lose file integrity, rejecting the asset stream.
How to Fix Error 3302 on iPhone, iPad & Mac
Method 1: Upgrade Photo Permissions to “Full Access”
If error 3302 appears while saving photos from apps like Pinterest, Instagram, or file-transfer tools, your privacy profile is likely restricting asset creation:
- Open the Settings app on your iPhone or iPad.
- Scroll down and tap the specific app generating the error (e.g., Pinterest or Send Anywhere).
- Select Photos.
- Change the setting to Full Access (or at minimum confirm Add Photos Only is actively toggled).
- Force-close the app and retry the download.
Method 2: Use the “Save to Files” Intermediary Route
When a file format is rejected by the Photos library, the native iOS filesystem usually handles it without issue:
- In the source application or AirDrop prompt, choose Save to Files instead of direct saving to Camera Roll.
- Open the native Files app and locate your item.
- Tap the file, hit the Share button, and tap Save Image. If it still throws error 3302, use the built-in Quick Action: tap the 3 dots > Convert Image > select JPEG, then save.
Method 3: Transcode Video Containers & Audio Tracks
If you are attempting to import an MP4, MKV, or WebM video file and PhotoKit triggers 3302, the audio track is often encoded in AC3, Opus, or uncompressed PCM.
- On Mac: Use HandBrake (free, open-source) to re-encode the file using the Fast 1080p30 preset, ensuring the audio track is set to AAC stereo.
- On iPhone: Use a mobile transcoding utility like Media Converter to convert the video to H.264 / AAC before saving to Photos.
Method 4: Fix Stuck iCloud Shared Albums & Mac Photo Libraries
When the issue occurs while organizing shared albums:
- On iPhone: Go to Settings > [Your Apple ID] > iCloud > Photos, toggle Shared Albums off, wait 30 seconds, and turn it back on.
- On macOS: Quit the Photos app completely. Hold down Option + Command while clicking the Photos app icon, then click Repair to rebuild the internal library database.
PhotoKit Error Codes: Diagnostic Reference Table
| Error Code | Symbolic Constant | Technical Meaning | Definitive Resolution |
|---|---|---|---|
| Error 3302 | invalidResource | Asset validation failed; incompatible codec or unreadable file | Convert to standard JPEG/MP4 or grant Full Access permissions |
| Error 3300 | internalError | Unexpected internal PhotoKit runtime exception | Restart device and force-relaunch the host application |
| Error 3305 | insufficientStorage | Device ran out of disk space during temporary write buffer | Free up internal flash storage (at least 2x the file size) |
| Error 3301 | userCancelled | User dismissed the modal save or share picker | Retry operation without tapping outside the modal window |
For Developers: Preventing Error 3302 in Swift & React Native
If you are building an iOS application and your users report PHPhotosErrorDomain 3302 during file saving, apply these defensive engineering practices:
- Always cache before saving: Download remote images to
FileManager.default.temporaryDirectoryfirst. Never pass remote web addresses directly tocreationRequestForAssetFromImage(atFileURL:). - Transcode on-the-fly: If handling modern web formats (AVIF, WebP), decode the data into a
UIImageand save usingUIImageJPEGRepresentationor standard PNG bytes before calling PhotoKit. - Explicitly verify Info.plist strings: Ensure both
NSPhotoLibraryUsageDescriptionandNSPhotoLibraryAddUsageDescriptionare defined with explicit user-facing intent strings.
Frequently Asked Questions
Why does Pinterest trigger error 3302 on iPhone?
Pinterest serves images in lightweight web formats such as AVIF and WebP to improve page load times. When you tap “Download Image”, the app attempts to pass that file straight to PhotoKit, which rejects it as an invalid resource if the local profile lacks proper decoding. Granting “Full Access” in Settings or taking a screenshot provides an immediate fix.
Does Error 3302 mean my photo library is corrupt?
No. Error 3302 pertains directly to the individual file being imported or modified, not the health of your existing photos. Your stored photos and iCloud backup are completely safe.
Can low storage trigger error code 3302?
No. Insufficient internal storage triggers PHPhotosErrorDomain Code=3305. If you receive 3302, your available disk space is not the bottleneck; file formatting or permissions are the sole root causes.
