Click the "Select File" button above, and choose your SNM file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert SNM to another file type
To convert your SNM file to another format, you need Samsung Notes or other Data software.
Convert a file to SNM
To convert other file formats to the "Mobile Note Archive" file type, you need software like Samsung Notes or a similar tool.
About SNM files
The .snm extension represents two distinct file types that create very different challenges for users.
1. Samsung S Note File (Mobile Memo)
Often found in backups from older Samsung Galaxy Note devices, these files contain handwritten memos, sketches, and audio recordings created with the S Note app.
The Problem: The format is highly proprietary. Unless you have a functioning legacy Samsung device, these files are effectively "digital bricks." Standard desktop software cannot render the vector strokes or embedded audio, making it difficult to recover old ideas or sketches.
The Solution: For archiving and viewing, the best approach is converting these to PDF. This flattens the vector strokes into a universally viewable document. For using the sketches in other creative software, converting to JPG or PNG is recommended.
2. Netscape Mail Index (Legacy)
Historically, this is the most common use of the extension, originating from Netscape Communicator (specifically Netscape Messenger).
The Problem: Users often discover these in old hard drive archives and assume they contain their lost emails. They do not. The .snm file is merely a binary index (a map) that speeds up the loading of the actual mailbox. It contains headers and pointers, but not the message bodies.
The Reality: Converting a Netscape index file usually results in gibberish. If you are trying to recover old emails, look for the accompanying file with no extension (or a mbx extension) in the same folder. That file contains the text, which can then be converted to EML or PDF/A for modern archiving.
Convert.Guru analyzes your SNM file, detects the exact format, and lets you read the text inside.
If you want to convert SNM file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use Samsung Notes or similar software from the "Mail Index / Digital Note" 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 SNM, try Samsung Notes or another comparable tool in the "Mail Index / Digital Note" category.
The SNM Converter Story
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 SNM converter.