All about SPEC Files

The SPEC file type is primarily associated with rpm-build.

SPEC	File extension: SPEC
	File type:	build specification

What is an SPEC file?

SPEC files mostly belong to rpm-build by rpm-build developers. A SPEC file contains the specification that rpmbuild uses to build a binary package that can be downloaded and/or installed using RPM package manager. Build specifications are usually stored as text, so they can be edited with a plain text editor. A SPEC file contains version/copyright information, package name, and references to program scripts. Python and other software development tools also use a SPEC file to store build specifications. Kivy mobile application development framework uses a SPEC file to store the build specification for compiling an Android or iOS application.

How to open an SPEC file

You need a suitable software like rpm-build to open an SPEC 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 SPEC file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SPEC file directly in the browser:. Just drag the file onto this browser window and drop it.

Online SPEC Text Viewer

Choose your .spec file to view

or drag and drop it here

Online File Viewer

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How to extract texts from SPEC files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

1. To do this, click the button "Choose your .spec file to view" on this page.
2. After your file is opened in browser,
3. click "Save as..." in the menu.
4. Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
5. Download the converted file.

SPEC file format details:

The file format determines how the data is stored in the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So you need a detailed analysis of a file to find out the format and the associated program. Our examination of the SPEC files comes to the following conclusion:

You will often come across the SPEC file type. This includes different formats for different programs. The two most popular formats are as follows:

• 65% of all SPEC files internally utilize the config file format. A configuration file is used by computer software to store settings. It consists of a text-based content with a structure and syntax comprising key–value pairs for properties, and sections that organize the properties. These files contain text and words, not binary data. The file size is in the range of 880 bytes to 1 KB. The file type is a fairly new file format. Certain words are almost always found in the files, such as Analysis, block_cipher = None, pathex, # -*- mode: python ; coding: utf-8 -*-, Users, binaries=[] and Desktop. The following filename is common: Main.spec. Files like these have the following tags: calculator, generator, client, software, login, code, data, interface, database, manager, program, utility, script, merge, clan, game and tool.
• 7% of all SPEC files start with the bytes 32 00 30 00 crucial for this file format. The content consists of readable text data, which can be read using a text editor. The file size is in the range of 37 KB to 65 KB. The following keywords are characteristic: ============, Wavelength, Counts, 340.92 and Serial Number: AMA01376. Such files sometimes refer to poly.

All other SPEC files (28%) have no uniform format, frequently e.g. JetDB, XML, CHECKSUM, Name and COMMENT. These files are often connected to spectrum, msttcorefonts, specification, setup or case. Just click the "Choose your .spec file to view" button on this page to find out what your SPEC file is.