All about ESP Files

The ESP file type is primarily associated with ACD/Spectrus Processor.

ESP	File extension: ESP
	File type:	spectral data file

What is an ESP file

ESP files mostly belong to ACD/Spectrus Processor by Advanced Chemistry Development. The Elder Scroll Plugin, ESP file is primarily associated with the video game series called The Elder Scrolls, a first-person Role-playing game (RPG) game series developed by Bethesda. The plugin files associated with this game use ESP extension file.

Developers use plugin features to customize the experience of the game. These plugins are referenced and added via the ESP file to add new features like:
- Graphics
- Locations
- Weapons
- Ways of Interaction
- Assets
Main Usage: The plugin files or ESP files interact with ESM files and overwrite the default or previous settings to bring in new custom alterations. Other Programs that use ESP files: Fallout, a post-apocalyptic role play game series developed by Bethesda, uses ESP file extension for its plugin files.
Associations:
- Data files generated by Advanced Chemistry Development (ACD) analysis software uses ESP extension. These dataset files help in storing and organizing research related data.
- The screen saver project file created by Active Media Eclipse uses ESP extension.
- The ESP extension is also associated with Email Sentinel Pro, an email antivirus protection suite. These files store the protected attachments sent or received via emails.

How do you open ESP files?

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

Online ESP Text Viewer

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Programs that open and convert ESP files:

ACD/Spectrus Processor by Advanced Chemistry Development
See the previous paragraphs to learn more about the main application. ESP files are often referred to as ACD/Spectrus Processor data files because this type of file is primarily created or used by this software.
Appweb (ESP web page) by EmbedThis
Appweb is an embedded web server that hosts web applications for the Internet of Things. ESP is a framework for the C language that is included with Appweb. An ESP web page has the ESP extension. This file format is classified as Web (source). Related links: ESP Product Page, Appweb Overview, ESP Documentation, Introduction to ESP Web Pages, Appweb and ESP Article Mentioning ESP Files
Easy Setup Program (configuration file) by Omron
Easy Setup Program, also known as ESP, is a software for setting up barcode scanners and imagers manufactured by Omron. Both the hardware and software were previously developed by Microscan. The ESP file stores configuration settings for Easy Setup Program. This file format is classified as Settings. Related links: QuickStart Guide for ESP (Download Link), Configuring MINI Imager Using ESP, ESP Brochure
Eclipse (screensaver file) by Active Media
Eclipse is a screensaver design toolkit from Active Media. An ESP file is associated with a screensaver created using Eclipse. This file format is classified as Misc. Related links: Eclipse FAQs, Sample Screensavers, Eclipse on CNET, Eclipse Mentioned in Web Cams for Dummies
Edskes Software Pakket by Hillbrand Edskes
Edskes Software Pakket is a suite of free computer programs and games from the programmer Hillbrand Edskes. The ESP file format may be used by this suite of programs. Related links: Dutch Page for Edskes Software Pakket
Email Sentinel Pro (protected email attachment) by DS Development
Email Sentinel Pro is an anti-virus software for emails that also provides pasword protection. An email attachment protected using Email Sentinel Pro has the ESP extension. This file format is classified as Misc. Related links: How Email Sentinel Pro Works, Email Sentinel Pro FAQs, Password Protecting Attachments Using Email Sentinel Pro, Email Sentinel Pro on CNET, Press Release About Email Sentinel Pro
ESPlanner by Economic Security Planning
ESPlanner is a financial planning software from Economic Security Planning. ESP is a file format associated with ESPlanner. Related links: ESPlanner FAQs, ESPlanner User Manual
Ethos System by Taknosys
Ethos System is a software that provides an algorithm to the user for ethical decision making. ESP is a file format associated with Ethos System. Related links: Ethos System FAQs, Ethos System Mentioned in Engineering Ethics Book, Ethos System Mentioned in Dissertation
Fallout (game plugin file) by Bethesda Softworks
Fallout is an action role-playing video game. The third game in the series, Fallout 3, has been developed by Bethesda Softworks. The ESP file format stores a plugin used by Fallout 3. The file is used along with ESM master files. This file format is classified as Game. Related links: Fallout 3 on Wikipedia, ESP File Description on Fallout 3 Fandom, Fallout 3 Gameplay
Personal Paint (Spanish language localization file) by Cloanto
Personal Paint is a paint program that was developed by Cloanto for the Amiga family of personal computers introduced in the 1980s. The ESP extension is used by a user interface localization file for the Spanish language. The file is named UITEXT.ESP. Related links: Personal Paint on Amiga Forever, User Interface Localization in Personal Paint, Personal Paint FAQs, Personal Paint Review, Personal Paint Review Video
The Elder Scrolls (game plugin file) by Bethesda Softworks
The Elder Scrolls is a series of action role-playing video games from Bethesda Softworks. The ESP file format stores a plugin used by several games in the series. The file is used along with ESM master files. This file format is classified as Game. Related links: The Elder Scrolls on Wikipedia, Tutorial About ESP and ESM Files, ESP File Format Description, ESP File Description on Elder Scrolls Fandom, Elder Scrolls: Morrowind Gameplay

ESP file format:

To view or edit ESP files you need to know the file format, because it determines how the data in this file is stored. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). If the file extension or signature does not match the file format, errors will occur when opening or editing the file. If there are problems opening a file, you must first determine the file format used. Our evaluation of the ESP files looks like this:

ESP is not a commonly used file extension and mainly uses a special format. But the following two file formats are common:

80% of all ESP files are TESIV:Oblivion Plug-in files. These are binary files, so they do not contain words or text. ESP files can be up to 17 MB in size, but are often around 1 KB - 1 MB. The file type was developed 20 years ago and is still in use today. The files contain the following words: HEDR, CNAM, MAST, DATA, Skyrim.esm, TES4, INTV, GRUP, DEFAULT, EDID and Update.esm. Such files sometimes refer to skyrim, patch, armor, unofficial and project.
5% of all ESP files are based on the popular JSON file format. JSON (JavaScript Object Notation) is a lightweight data−interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. The content consists of readable text data, which can be read using a text editor. The file size is in the range of 2 KB to 9 KB. The files contain the following words: dimensions, duration, frameRate, height, modelVersion, name, scenes, settings, timeFormat, width, animationModel and frames.

The remaining 15% of all ESP files are files with no common format, frequently e.g. Morrowind plugin. Just click the "Choose your .esp file to analyze" button on this page to find out what your ESP file is.

Technical Data for ESP File Extension

File classification:

Data

Related files:

eps, esm, pex, nif, bsa, 7z, ba2, png, zip, esb, ck, esl, psc, json, esf, ai, rar, osp, jpg, dmp

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: TES3.Plugin, FileType: Morrowind Plugin Data File, AppName: TES Construction Set
EXEFile: TES Construction Set.exe

ProgramID: TesCsFile
EXEFile: %ProgramFiles%\Bethesda Softworks\Morrowind\\TES3 Construction

ProgramID: TesCsFile
EXEFile: %ProgramFiles%\Bethesda Softworks\Morrowind\\TES3 Construction Set.exe

an esp spectral data file is a special file format by Advanced Chemistry Development and should only be edited and saved with the appropriate software.

How to solve problems with ESP files

Associate the ESP file extension with the correct application.
Update your software that should actually open spectral data files. Because only the current version supports the latest ESP file format. Search, therefore, e.g. on the Advanced Chemistry Development manufacturer website after an available ACD/Spectrus Processor update.
To make sure that your ESP file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .ESP file online - secure, fast, and no downloads needed.