Extract text from SPK files
To convert your SPK file to another format, you need Synology DiskStation Manager or other Compressed software.
To convert other file formats to the "NAS Installation Package" file type, you need software like Synology DiskStation Manager or a similar tool.
The .SPK file extension is primarily associated with Synology application packages, acting as the standard installation container for software on Synology DiskStation Manager (DSM). Under the hood, these files are simply TAR archives that bundle the software payload (often inside a nested package.tgz), installation scripts, and metadata like the INFO file. A distinct but significant secondary use is for SilverBullet configuration files, which store settings for automated web testing suites.
The main challenge users face with .SPK files is the proprietary extension. While a Synology NAS handles them seamlessly, standard operating systems like Windows or macOS do not recognize them as archives by default. This creates friction for developers or curious users who wish to inspect the code, verify the INFO file, or modify assets without deploying the package to a live server. Similarly, SilverBullet configs are unreadable outside their specific environment.
To overcome these limitations, the best workflow is to convert (or technically, rename and extract) Synology .SPK files to TAR or ZIP. This allows immediate access to the internal folder structure using common tools like 7-Zip or WinRAR. For SilverBullet users, converting the configuration file to a plain TXT or JSON format allows for human-readable editing and backup.
Convert.Guru analyzes your SPK file, detects the exact format, and lets you read the text inside.
Users also converted SKP, SPKLAB, ESPK, OPK, ZIP, SKB, STL, PDF, EXE, DAT and DLM files.
If you want to convert SPK file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use Synology DiskStation Manager or similar software from the "Synology Package Archive" category. In the File menu, look for Save As… or Export….
To convert DEVICE, CACHE, SOCK, SYMLINK, PID, MOUNT, FIFO, LOG, PIPE, TMP, JUNCTION or TEMP files to SPK, try Synology DiskStation Manager or another comparable tool in the "Synology Package Archive" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our SPK converter.