Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.SREC
File Type
Motorola S-Record
Category
Programming
Best first step
Use compatible software
Quick Summary
A practical overview of the .srec file format
The Motorola S-Record file format, often shortened to SREC or S19, is a text-based file format used to represent binary data, primarily for programming microcontrollers, EPROMs, and other embedded systems. It's a human-readable format, making it relatively easy to inspect and debug. Each line in an…
File extension
.SREC
File type
Motorola S-Record
Category
Programming
Recommended action
Open with a trusted compatible app
How to open a .srec file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .srec.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .srec file?
File extension details and usage information
The Motorola S-Record file format, often shortened to SREC or S19, is a text-based file format used to represent binary data, primarily for programming microcontrollers, EPROMs, and other embedded systems. It's a human-readable format, making it relatively easy to inspect and debug. Each line in an SREC file represents a record, starting with the character 'S' followed by a type code (S0, S1, S2, S3, S5, S7, S8, S9), a byte count, an address, the data bytes, and a checksum. The type code indicates the record's purpose: S0 for header information, S1/S2/S3 for data records with varying address sizes (16-bit, 24-bit, and 32-bit respectively), S5 for a count record (deprecated), and S7/S8/S9 for termination records with corresponding address sizes. The data bytes contain the actual binary data to be programmed into the target device. The checksum ensures data integrity during transmission or storage. SREC files are widely supported by various programming tools, compilers, and debuggers used in embedded systems development. The format's simplicity and widespread adoption have made it a standard for transferring binary data to embedded devices.
Software Compatibility
Programs that may open or work with .srec files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .srec files be converted?
Options for saving or exporting this file to another format
In many cases, a .srec file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .srec file.
Why can't I open a .srec file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .srec format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .srec files
To open a .srec file, use software that supports this file format.
- Motorola SRecord Tools
- Hex Workshop
- UltraEdit
- Notepad++ (with plugins)
- Visual Studio Code (with extensions)
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .srec file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.