Opening an SPEF File

The SPEF file type is primarily associated with SP Text Encoder.

SPEF	File extension: SPEF
	File type:	Encoded Text File

What is an SPEF file

SPEF files mostly belong to SP Text Encoder by SP Programs. If you want your text files safe from prying eyes, just copy and paste your text into the encoder, click Save. You then set a 16 character password for extra safety, and it's encoded.

How to open SPEF files

You need a suitable software like SP Text Encoder to open an SPEF file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your SPEF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SPEF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online SPEF Text Viewer

Choose your .spef file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert SPEF files:

SP Text Encoder by SP Programs
See the previous paragraphs to learn more about the main application.
Standard Parasitic Extraction Format
SPEF files are generated by parasitic extractors like CALIBRE. An XRC.SPEF file is fed to the STA tool to do post layout Static Timing Analysis.

Technical Data for SPEF File Extension

Related files:

prr, ez, hdf5

Related links:

SP Text Encoder Download

an spef Encoded Text File is a special file format by SP Programs and should only be edited and saved with the appropriate software.

How to solve problems with SPEF files

Associate the SPEF file extension with the correct application.
Update your software that should actually open encoded text files. Because only the current version supports the latest SPEF file format. Search, therefore, e.g. on the SP Programs manufacturer website after an available SP Text Encoder update.
To make sure that your SPEF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .SPEF file online - secure, fast, and no downloads needed.