All about ASD Files

The ASD file type is primarily associated with Word.

ASD	File extension: ASD
	File type:	document backup

What is an ASD file?

ASD files mostly belong to Word by Microsoft. ASD is the filename of extension of backup documents created by the AutoSave (also called AutoRecover) component of Word document processor. An ASD file contains the latest snapshot of a (DOC or DOCX) document which is currently being edited in Word. These ASD documents are created at intervals and used to recover the latest changes in a document in case Word crashes or you accidentally close the document without saving it. ASD is also the filename extension of audio sample analysis data used by Live music composition and live performance software. Such ASD files are created when an audio sample is recorded or importing for the first time. Metadata stored in this file are used for waveform display, beat-matching etc. Alphacam woodworking CAD/CAM software saves stone drawings in an ASD file.

How do you open ASD files?

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

Online ASD Text Viewer

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Programs that open and convert ASD files:

Word by Microsoft
See the previous paragraphs to learn more about the main application. ASD files are often referred to as Word backups because this type of file is primarily created or used by this software.
Alphacam (stone drawing) by Hexagon
Alphacam is a computer-aided design and manufacturing software used in the woodworking industry. It saves stone drawings in ASD files. This file format is classified as CAD.
ASD Archiver (compressed archive) by Tobias Svensson
ASD Archiver is a discontinued archive file compression utility. Archives compressed with this tool were saved in ASD files. This file format is classified as Compressed.
Live (audio analysis) by Ableton
Live is a music authoring software used for professional music production and live performance. It uses ASD files to store audio sample analysis when you import or record a sample for the first time. These files contain data gathered by Live optimize stretching quality, waveform display etc. This file format is classified as Audio.
Lotus 1-2-3 (screen driver) by IBM
Lotus 1-2-3 is an obsolete spreadsheet application for OS/2 and Windows platforms. Its screen driver was saved in an ASD file. This file format is classified as System.
Media Encoder (description) by Microsoft
Media Encoder was a program for converting, compressing, and playing Windows Media formats. It can play audio files saved in Advanced Streaming Format (ASF). Descriptions (metadata) used by these ASF files are saved in ASD files. Windows Media Encoder no longer supports ASD files. This file format is classified as Data.
Origins (embroidery design) by Origins
Origins is a discontinued embroidery-stitch design software for Widnows. When you generate stitches from an image, Origins creates outlines from the image which become the basis for the stitches. These outlines are stored in an ASD working file. This file format is classified as Data.
WebMotion (presentation) by Astound
WebMotion was a streaming and multimedia presentation software for Windows. ASD was its default presentation file format. This file format is classified as Data.

ASD file format:

If you can determine the file format, the associated program can also be determined. 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. File extension, signature and file format must match; otherwise errors will occur when the file is opened. So you need a detailed analysis of a file to find out the format and the associated program. In the following you will find our evaluation of the ASD files:

You will often come across the ASD file type. This is mainly used by one program with a specific format. However, the following two file formats are common:

75% of all ASD files use the Microsoft Compound File format, which is also known as Compound File Binary File format (CFBF or CFB) or OLE2 Compound Document format. Compound document files work similarly to real file systems. They contain a number of independent data streams (like files in a file system) which are organized in a hierarchy of containers (like sub-directories in a file system). Compound files begin always with signature bytes D0 CF 11 E0 A1 B1 1A E1 (ÐÏà¡±á). The app name of an ASD file is Microsoft Office Word or Microsoft Macintosh Word. There is also a CLSID, a globally-unique identifier of a COM (Component Object Model) object: f4754c9b-64f5-4b40-8af4-679732ac0607. The data in this file is stored in streams whose names are WordDocument, 1Table, SummaryInformation, DocumentSummaryInformation, CompObj and Data. The file size is in the range of 27 KB to 1 MB. It is a modern file type. Some examples of file names are Rescue.asd or AutoRecovery save of Document1.asd. Such files are related to auto, recovery, save, unsaved, document, wiederherstellen, speicherung and autosaved.
5% of all ASD files start with the magic bytes 47 44 01 01, which are always the first bytes of this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. A typical file size is 780 KB. An example of a file name is 01.asd or 02.asd. Files like these have the following tags: escalayer, reboot and achievement.

All the rest of the ASD files (20%) have different formats, often e.g. Ableton Warp Analysis. Often described as autorecovered, dokument, autorrecuperaci, word, recoverysaveof, kurtarma, otomatik, draft or kayd. If you want to find out which format your ASD file belongs to, just click on the button "Choose your .asd file to analyze".

Technical Data for ASD File Extension

File classification:

Backup

Related files:

ads, doc, vsf, docx, qnt, acd, tmp, wbk, asb, amd, check, aso, asv, and, asg, lnk, usd, fsd, afa, online, dic

Mime type:

text/x-common-lisp, application/octet-stream

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: Asf.RealTimeEncoder, FileType: ASF Stream Description File, AppName: Microsoft NetShow Rex
EXEFile: NSREX.EXE

ProgramID: Asf.RealTimeEncoder, FileType: ASF Stream Description File, AppName: Windows Media Encoder
EXEFile: NSREX.EXE

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MI1933~1\Office10\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~1\Office10\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~1\Office\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~2\Office10\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~2\Office\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~3\Office10\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~3\Office\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~4\Office10\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\NETSHO~1\Tools\nsrex.exe %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\WINDOW~4\Tools\nsrex.exe %1

ProgramID: Asf.RealTimeEncoder
EXEFile: D:\MICROS~1\Office10\NSREX.EXE %1

ProgramID: ZipZag.asd
EXEFile: %ProgramFiles%\ZipZag\zipzag.exe %1

ProgramID: Asf.CodificadorTiempoReal
EXEFile: %ProgramFiles%\MICROS~2\Office\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~2\OFFICE11\NSREX.EXE %1

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\MICROS~4\Office\NSREX.EXE

ProgramID: Asf.RealTimeEncoder
EXEFile: %ProgramFiles%\WI15DA~1\Tools\nsrex.exe

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an asd document backup is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with ASD files

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