Autocad Import Shx

Posted By admin On 20.04.21

AutoCAD is arguably the most prevalent CAD software on the market—it’s used by professionals and hobbyists alike. If you work with CAD, you’re likely to already be familiar with some of AutoCAD’s most common file formats, such as DWG and DXF. However, these aren’t the only file extensions and formats used with AutoCAD. In fact, you’ve probably come across many file extensions in AutoCAD that you’re not entirely familiar with. (If you’re truly lost, you may even need a little help figuring out what a file extension actually is.)

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If that’s the case, you’re in luck. Scan2CAD has all of the answers for you. This handy guide will explain what file extensions are, AutoCAD’s most common extensions, and a list of the other possible file extensions that you might come across.

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Before we look at AutoCAD’s file extensions, let’s start firstly with what file extensions actually are. A file extension is a group of characters after a file name, e.g. ‘article.docx‘. The file extension ‘.docx‘ lets Windows know which program on your computer the file can be opened with. In this case, Windows knows that the ‘.docx‘ extension should be opened with Microsoft Word.

So what’s the difference between file extensions and file types?

SHX Font Conversion Rules for AutoCAD Drawings. If SHX fonts are found on a local machine, the following conversion rules are applied: If all the characters found in SHX font, use specified SHX font and vectorize to polylines. If there are missing characters in local SHX font, use the following rules. Shape file (SHX) is missing. Shapes in an AutoCAD DWG drawing refer to external SHX shape definition files. If this file is missing, the Open drawing command is interrupted with a prompt to enter a different SHX file. Get complete files from the author of the drawing (incl. The missing SHX file - drawings should be transferred with eTransmit).

Typically, file extensions are used to determine the file type. For example, if you had an extension ‘.pdf‘, you would be dealing with either a ‘Portable Document Format’ or a ‘Printer Description File’. Of course, the former is far more frequently used, so, in the vast majority of cases, ‘.pdf’ would be referring to this file type. More often than not, an extension will only be associated with one file type, or a more ‘popular’ file type. For this reason, the two terms are often used interchangeably.

Let’s start off with AutoCAD’s most well-known file extensions: DWG and DXF.

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DWG

DWG (an abbreviation for ‘Drawing‘) is a proprietary vector file format created by Autodesk in 1982. Developers need a license to be able to use this format in their software. DWGs boast of the broadest range of features of any vector file type, supporting a selection of vector entities, including AutoCAD-specific elements such as dynamic blocks. They’re smaller than DXF files due to their binary makeup. Although they’re designed to be used in AutoCAD, users can view and edit DWG files with other programs—including Scan2CAD.

DXF

DXF (Drawing Exchange Format) is a vector file format used in CAD. It was created by Autodesk as an exchange medium between different types of CAD software. It is an open standard, so it’s supported by practically every CAD program on the market. You can also view DXF files using a range of programs including Adobe Illustrator and Scan2CAD. This full support is what makes this ubiquitous format the perfect choice for collaboration. While DXFs are smaller than their raster counterparts, they’re typically larger than DWGs—this is because DXFs are made up of ASCII text, whereas DWGs are binary.

This list includes the many file extensions that are developed for or associated with AutoCAD, that you will most likely come across while using the software.

DIM — Exported Dimension Style file (Express Tools — DIMEX/DIMIM commands). When you want to import or export your dimension style settings with DIMEX or DIMIM, you will be using an ASCII text file with a .dim extension.

LAS — Exported Layer State file (LAYERSTATE command). These files contain layer state information exported from a drawing in AutoCAD.

LIN — Linetype file (LINETYPE command). LIN files contain linetype definitions of 3D objects in a text format. AutoCAD linetypes consist of a series of dots and dashes, and can contain embedded text and shape objects. You can even print this file to understand how to construct linetypes.

MLN — Multiline Style file (MLINE command). Multiline styles control the number of line elements in a multiline, and the color, linetype and lineweight from the multiline origin of each element. A modified multiline style retains the changes permanently.

NFL — Custom Filters file (FILTER command). This file typically stores a multi-line filter.

PAT — Hatch Pattern file (HATCH command). Hatch patterns are used for texturing objects in a drawing. AutoCAD has a large selection of patterns, but it’s also possible to create your own.

Tool Palette-Related

ATC — Tool Palette Catalog file. This catalog contains definitions for all of the tools within a user interface palette. They can store tool configurations, and they can be used to customize a user’s workspace.

XTP — Exported Tool Palette file (CUSTOMIZE command). This file stores the definitions of tools in the user interface palette. It can export individual palettes that can be imported by another AutoCAD installation. A similar file is XPG, which exports tool palette groups.

CUIx — Customization file (CUI command). These files, created by the Custom User Interface Editor, store toolbar and menu configurations, alongside windows and palette settings. They’re used to load partial, or full custom workspace layouts. This format replaced CUI, MNU and MNS files in AutoCAD 2010.

DBX — ObjectDBX file. Essentially, this file is a software library that can allow third-party developers to access, read and edit DWG files and intelligent object databases.

Library-Related

CBL — Content Browser Library file. This contains tool catalogs and tool palettes. It can be shared, imported and exported between users and systems.

DLL — Menu Resource Library or .NET Assembly. This is a compiled library that stores procedures that are referenced and executed by AutoCAD. It lets multiple programs access shared functions through common libraries. These files shouldn’t be opened or edited—as it can cause errors.

SLB — Slide Library file. This library is created by the “slidelib” utility, and contains a collection of SLD slides—which will display slideshows of CAD designs. To create an SLB, you have to specify a corresponding text file e.g. slidelist.txt, with the names of the SLD files you want included in the library, then run the command: slidelib library < slidelist.txt

SLD — Slide file (MSLIDE command). These slide files contain image captures taken during the current view of a drawing. They can be used for presentation materials during design reviews.

AutoLISP-Related

FAS — Fast-load AutoLISP file. These files store compiled script written in AutoLISP, a variation of the LISP programming language. It’s used for creating macros that can automate processes in AutoCAD.

LSP — AutoLISP Source file. AutoLISP is a ‘dialect’ of the LISP programming language built for use in Autodesk products. LSP files contain source code information for AutoLISP.

MNL — Menu LISP files. This extension is used for files that contain saved menu LISP scripts.

VLX — Compile AutoLISP project file (VLIDE command). This file stores macro applications written in AutoLISP. It’s similar to FAS, only it contains multiple AutoLISP routines.

DCL — Dialog Control Language file. This can give AutoLISP files a dialog box that can be integrated into their routines, making them easier to use.

DCE — Dialog Error Log file. This file is generated in the working directory by AutoCAD when a DCL file with one or more semantic errors is encountered. The DCE file then provides information concerning the error found in the DCL file.

Shape-Related

SHP — Source Shape file (SHAPE command). These shape files are ASCII files that use code to define specific shapes. Compiling a shape definition file (SHP) then generates a compiled shape file: SHX.

SHX — Compiled Shape file (COMPILE command). This contains compiled shape data like building blocks, and font definitions for displaying custom text. The SHX can be inserted into a drawing, where the user can then specify the location, rotation and scale of the imported shape.

Various

ACTM — Action Macro file (ACTRECORD command). This is a macro file that contains a sequence of actions recorded using Action Recorder. It can store recorded command line entries, and selections from menus. ACTM files can also be used to automate repetitive tasks.

ARX — ObjectARX file. This contains a runtime extension, a form of the C++ programming language. These files can contain code or particular commands for the customization or extending of AutoCAD based products. Similar extension: RX.

BMP — Bitmap file (BMPOUT command). It is possible to save a rendering or object to a raster image BMP file format with the BMPOUT command.

DVB — VBA Project file (VBAIDE command). This is used for files that contain VBA source codes.

PGP — Program Parameters. This contains the various parameters used by AutoCAD. It contains external command definitions. It also allows users to create their own custom commands and keyboard shortcuts by modifying the acad.pgp file located in the support directory.

SCR — Script file (SCRIPT command). This is a generic executable script. When it’s opened, it runs a series of commands in the order they’re listed. The format is stored in plain text, so it can be edited in a basic text editor.

DST —Drawing Sheet Set file (SHEETSET command). These files contain drawing sheet data that has been extracted from multiple drawing files. It’s commonly used as the deliverable format for drafted or completed designs. You can create sheet set files by selecting View > Palettes > Sheet Set Manager.

DS$ —Autosave. Each time a sheet data file is opened, a current set data is copied to a backup file with the extension .ds$. To restore, rename the backup file extension to .dst. Similarly, SV$, $AC, and AC$ are also autosave files.

DWF —Drawing Web file. This is a secure file format developed by Autodesk for the distribution of design files that are easy to view and print. They’re compressed, small and fast to transmit. A similar file is DWFx which is formatted using Microsoft’s XML Paper Specification (XPS).

DWS — Drawing Standards file. This is used to define drawing standards for elements such as dimension styles, linetypes and layer properties. It can also be used for detecting ‘violations‘ to these standards.

CHX — Batch Standards Checker file. This is a verification file that checks drawings against standards defined in DWS files. It’s used for auditing drawings and reporting violations. It’s useful for when multiple parties have modification privileges—if one party creates changes that don’t fit with the standards, then the violations can be identified.

DWT — Drawing Template file. These files store templates or prototypes, containing all the setup parameters for new drawings, e.g. unit types, title blocks, layer names and so on.

DXB —Drawing Interchange Binary file. It’s a binary version of the DXF format which is text based. DXBs are faster and smaller than DXFs, but they’re not as compatible with other programs.

DSD —Publish Set file (PUBLISH command). It’s a properties file, containing the settings for publishing a drawing to a plotter format. They can save reusable publishing settings.

PC3 —Plot Configuration files. It’s a master control file for plotter configurations, containing properties like print quality. They commonly have corresponding PMP (Plotter Model Parameters) files which provide custom information for a PC3 file. This includes plotter calibration data and calibration settings for use in multiple PC3 files.

PLT —Plot file. This is a standard file for almost all plotters. Associated with HPGL (a printer control language), it’s used by many programs when exporting vectors for plotters. It can be printed using a plotter, which prints images using lines instead of dots.

PSS —Plot Stamp Settings file (PLOTSTAMP command). This contains plot stamp information, like the plot scale and paper size. Using these files, multiple users can access the same file and stamp their own plots—using different settings.

PTW —Publish to Web Template file (PUBLISHTOWEB command). This settings file stores properties for a drawing that has been published to a web format. It allows the Publish to Web Wizard to track what’s been published.