This update focuses heavily on stability, scalability and real-world forum support after a large amount of backend work and testing.

New in 5.2.1

• Low-priority scalable background scans
• Cloudflare R2 / external storage aware scanning
• Chunked scan processing for very large forums
• Resumable scan state system
• Safe duplicate attachment cleanup workflow
• Duplicate cleanup dry-run mode
• Duplicate cleanup audit logging
• Improved repair queue handling
• Better ACP scan management
• Enhanced attachment verification checks
• Improved button/action wiring validation
• Storage probe and adapter detection
• Additional reporting and analytics improvements

Duplicate cleanup safety

Duplicate cleanup has been intentionally designed to avoid dangerous automatic deletions.

The addon now:

• detects duplicate attachment data
• builds a cleanup queue
• performs dry-run validation first
• only deletes duplicate data rows with zero active attachment references

Referenced attachments are automatically held for manual review rather than being blindly deleted.

Large forum improvements

The scalable scan engine is designed for forums with very large attachment libraries and external object storage.

Supports:

• local filesystem storage
• Cloudflare R2
• S3-compatible storage
• XenForo filesystem abstraction

Remote-aware scans avoid downloading full attachment objects where possible.

Additional notes

This release also includes:

• template cleanup
• controller/action verification
• PHP lint validation
• XML validation
• improved internal wiring checks

As always:

• please back up your forum before running repair/cleanup tools
• staging/testing is recommended before production deployment on very large forums

Small maintenance/stability update.

Changes in 5.2.2

• Improved export handling
• Added explicit CSV export support/validation
• Improved admin permission handling
• Additional ACP button/action validation
• Additional service/job wiring checks
• Additional XML validation cleanup
• Internal release-readiness checks and cleanup
• General backend stability improvements

This update was mainly focused on tightening things up and improving overall reliability before wider public use.

Attachment Integrity 5.4.5 Released

This update focuses mainly on stability, scan accuracy and improving support for larger forums using external storage providers such as S3 and Cloudflare R2.

Updated in 5.4.5:

• Added proper "hashes.json" support for XenForo file health checks
• Fixed scalable/background scan failures on stricter MySQL setups
• Improved remote storage detection for S3/R2 environments
• Removed misleading local disk free-space reporting on external storage
• Duplicate attachment analytics now only show confirmed scan results
• Missing thumbnail analytics now only show confirmed scan results
• Disabled unsupported local thumbnail sampling/benchmark checks for remote storage
• Improved ACP navigation phrase handling
• Additional backend stability improvements and cleanup across scan handling and analytics

Thanks to everyone testing this on larger production forums and reporting edge cases — it’s helped massively with tightening up the addon for real-world usage.

I’ve pushed another update that clears the compiled phrase row and refreshes the ACP nav phrase on upgrade

Updated in 5.4.6 :

Done a fair bit of work on this update after some proper testing on larger forums and external storage setups.

Main fixes in this version:

• Fixed S3/R2 scans incorrectly flagging attachments as missing
• Files are now only marked missing if the addon can actually verify they’re gone
• Improved external storage handling and remote object checks
• Standard scans now use the storage adapter properly instead of local-only checks
• Fixed ACP navigation phrase issues
• Added proper hashes.json support for XenForo file health checks
• General cleanup and stability improvements across the scan system

Also spent time going through the package properly before uploading:

• XML validation
• PHP syntax checks
• ACP route/button checks
• permission checks
• hashes verification
• scalable/background scan checks

Appreciate everyone that’s been testing this and posting issues/feedback. It’s helped a lot with catching edge cases that you just don’t see on a basic local install.

Updated in 5.4.7 :
I’ve pushed another update that clears the compiled phrase row and refreshes the ACP nav phrase on upgrade

Attachment Integrity v5.5.0 Update

• Scheduled automatic integrity scans
• Email notifications for critical issues
• Attachment repair queue system
• Advanced thumbnail verification
• Storage usage analytics
• Duplicate attachment detection
• Attachment age reporting
• Per-user attachment statistics
• CLI scan and repair commands for large forums
• Improved repair automation (one-click repair, guided maintenance)
• Additional export formats (CSV, JSON, TSV, HTML)
• Storage benchmarking
• ACP dashboard widget
• Archived scan history
• Enhanced filtering and search (per-forum scans, severity filtering)

5.5.2 What's new :

• Bulk delete attachments by filename pattern with dry-run preview before committing
• Background scans now start properly instead of silently completing with no results
• Stale scans stuck running for 2+ hours are automatically marked as failed
• Email alerts for critical issues now report the correct issue count
• Fixed file health check showing false "missing" results due to incorrect hash format
• All XML data files updated to XF 2.3 format for clean installs on any site

What's fixed in v5.5.3:

1. New "Bulk actions" sectionadded to the ACP page with:
   • Filename pattern search field (searches ALL attachments, not just scan results)
   • Dry run checkbox (on by default) — previews what would be deleted
   • Confirmation checkbox required for live deletion
   • "Search and process" button
2. Clarifying note added to the Results filter: "Filters below search scan results only. Run a scan first to populate this table. To search all attachments by filename, use the Bulk actions section."