What is the ABM file format?
.abm is a binary file format developed by ArcSoft, Inc. as the native album container for ArcSoft PhotoStudio. It is a proprietary format for storing various image data - in the form of references to actual image files - along with collections, metadata, and thumbnails. An .abm album file works much like a playlist for photos: it groups a set of pictures into one browsable package without necessarily copying the source images. .abm album files can be used to create multimedia presentations or to organize and share edited images.
The .abm format is not standardized. .abm files created with one application may not be compatible with other applications that also use .abm files. Files can differ widely regarding size and supported features depending on the PhotoStudio version that produced them. Crucially, .abm files do not store any actual image data by default - they hold references to JPEG or PNG files on disk. Moving or deleting the referenced photos will break the album.
- Member photos are referenced by file path; thumbnails are typically embedded and JPEG-compressed.
- The format uses little-endian binary encoding with no publicly documented magic number.
- ArcSoft PhotoStudio is a largely legacy application; the
.abmformat has no active standardized successor.
Security & safety
RISK: LOWAn ArcSoft .abm is a passive album/data file - it holds image references, thumbnails and metadata, no executable code, so it is safe to handle. The practical risks are data-loss ones, not malware: if the album only REFERENCES your photos, deleting or moving the originals loses the pictures (the .abm keeps only small thumbnails), so back up the source images. As always, be cautious with unexpected files from untrusted sources, and make sure you've correctly identified the .abm type (photo album vs the unrelated music/database uses) before assuming what's inside.
Format details
in a nutshell- Music album / playlist file (.abm) - Some media applications use .abm for a music album or playlist definition - the name 'Music album file' in older databases; a different, audio-oriented use of the extension.
- iView MediaPro / Microsoft Expression Media album (.abm) - Older Mac/Windows media-cataloging apps used .abm-style album catalogs (legacy, now Phase One Media Pro lineage).
- Alpha Five database (.abm) - Used by the Alpha Five rapid-application/database tool for a database component (unrelated to photos).
Programs that open ABM files
Windows2 apps
ArcSoft PhotoStudio
Paid Open the .abm in the ArcSoft PhotoStudio that created it; browse the album, then File > Export / Save As to write the member photos out as JPG/PNG. The primary opener.
Serif PhotoPlus (legacy)
Paid If the album came from Serif PhotoPlus, open it there. PhotoPlus is discontinued (succeeded by Affinity Photo, which does NOT read .abm), so use an existing PhotoPlus install. 
macOS1 app
ArcSoft PhotoStudio (older Mac builds)
Paid Older Mac versions of ArcSoft PhotoStudio open the album; export the photos to standard formats. Modern macOS may not run the legacy build. Technical details
deep spec| Developer | ArcSoft, Inc. |
| Encoding | Binary, little-endian |
| MIME type | application/octet-stream |
| Container type | Proprietary photo-album database grouping image references and cached thumbnails into one package |
| Image storage model | Source images are referenced by file path rather than embedded; only thumbnails are stored inside the .abm file itself |
| Thumbnail encoding | JPEG-compressed, typically at 24-bit color depth |
| File signature | No publicly documented magic number; identified by file extension and association with ArcSoft software |
| Metadata stored | Photo file paths, album title, thumbnail cache, and basic per-image metadata |
| Supported software | ArcSoft PhotoStudio (Windows, macOS); Serif PhotoPlus legacy builds (Windows) |
| Operating systems | Windows (primary platform); macOS supported in older ArcSoft builds |
| Typical file size | Tens of KB to several MB, depending on album size and embedded thumbnail data |
| Cross-version compatibility | Files produced by different PhotoStudio versions may be mutually incompatible |
| Source image formats | Designed to reference JPEG, PNG, BMP, and TIFF files stored separately on disk |
| Dependency risk | Relocating or deleting referenced source images renders those album entries inaccessible |
| Released | Late 1990s / early 2000s (ArcSoft PhotoStudio and related photo software) |
| Latest version | Tied to ArcSoft PhotoStudio versions (legacy; PhotoStudio 6 era) |
| Specification | www.arcsoft.com |
ABM conversions
Community Q&A
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