--- title: "FileFormat" language: "en" type: "Entity" summary: "Commonly used computer file formats." canonical_url: "https://reference.wolfram.com/language/ref/entity/FileFormat.html" source: "Wolfram Language Documentation" related_guides: - title: "Entity Types" link: "https://reference.wolfram.com/language/guide/EntityTypes.en.md" --- # FileFormat Commonly used computer file formats. [Related Interpreter](https://reference.wolfram.com/language/ref/interpreter/FileFormat.en.md) Entity["FileFormat", name] or Entity[...] represents an entity of type "FileFormat". Entity[...][prop] gives the value of a specified property. Entity[...][{propi, …}] gives the value of a list of properties. EntityClass["FileFormat", {propi -> speci, …}] represents a class of entities with values of propi defined by speci. ## Sample Entities * Entity["FileFormat", "CDF-1"]Entity["FileFormat", "HTML-1"]Entity["FileFormat", "JPG-1"]Entity["FileFormat", "JSON-1"]Entity["FileFormat", "MP3-1"]Entity["FileFormat", "PDF-1"]Entity["FileFormat", "PLAYLIST-1"]Entity["FileFormat", "WEBM-1"]Entity["FileFormat", "WMA-1"]Entity["FileFormat", "XLS-1"]**…** ## Sample Entity Classes * EntityClass["FileFormat", "Audio"]EntityClass["FileFormat", "ComputableDocument"]EntityClass["FileFormat", "Database"]EntityClass["FileFormat", "DiskImage"]EntityClass["FileFormat", "Encoded"]EntityClass["FileFormat", "Executable"]EntityClass["FileFormat", "Game"]EntityClass["FileFormat", "Miscellaneous"]EntityClass["FileFormat", "RasterImage"]EntityClass["FileFormat", "Video"]**…** ## Properties | | | | -------------- | ---------------- | | Applications | applications | | Developer | developer | | EntityClasses | entity classes | | EntityTypeList | entity type list | | Extension | extension | | FileSignature | file signature | | MimeType | MIME | | Name | name | | Standard | file standard | | Type | type | | UniformType | UTI | | Year | release year | ## Details * ``"FileFormat"`` entities represent common formats used to store digital information. * Some properties are available for the ``"FileFormat"`` entity type as a whole and can be given using the form ``EntityValue["FileFormat", property]``. Such properties include: | | | | ----------------------------- | ------------------------------------------------------------------ | | "Properties" | the list of available properties | | "PropertyCanonicalNames" | the standard names of available properties | | "SampleEntities" | a sample list of available entities (typically of length 10) | | "SampleEntityClasses" | a sample list of available entity classes (typically of length 10) | | "EntityCount" | number of entities available | | "Entities" | the list of available entities | | "EntityCanonicalNames" | the standard names of available entities | | "EntityClasses" | the list of available entity classes | | "EntityClassCanonicalNames" | the standard names of available entity classes | | "PropertyClasses" | the list of available property classes | | "PropertyClassCanonicalNames" | the standard names of available property classes | | "PropertyCount" | number of properties available | * The following annotations can be used in the third argument of ``EntityValue["FileFormat", property, annotation]`` : | | | | --- | --- | | "Source" | source information for the property | | "Date" | the date associated with the entity-property value (if any) | | "EntityAssociation" | an association of entities and entity-property values | | "PropertyAssociation" | an association of properties and entity-property values | | "EntityPropertyAssociation" | an association in which the specified entities are keys, and values are a nested association of properties and entity-property values | | "PropertyEntityAssociation" | an association in which the specified properties are keys, and values are a nested association of entities and entity-property values | | "Dataset" | a dataset in which the specified entities are keys, and values are an association of property names and entity-property values | * The following annotations can be used in the second argument of ``EntityValue[property, annotation]`` : | | | | ------------------------ | --------------------------------------------------------------- | | "Qualifiers" | the list of possible qualifiers for the property | | "QualifierValues" | the list of possible values that can be given to each qualifier | | "DefaultQualifierValues" | the list of default values for the property's qualifiers | | "Description" | a brief textual description of the property | | "Definition" | a detailed textual definition of the property | | "PhysicalQuantity" | the physical quantity associated with the entity-property value | | "Unit" | the unit associated with the entity-property value | * A qualifier value of ``Automatic`` indicates that an applicable format of values can be used; e.g. for the ``"Date"`` qualifier, this includes a proper date or date span. --- ## Examples (4) ### Basic Examples (4) Use ctrl+= for entity discovery: ```wl In[1]:= \[FreeformPrompt]["pdf"] Out[1]= Entity["FileFormat", "PDF-1"] ``` --- Find a property value for an entity: ```wl In[1]:= Entity["FileFormat", "XLS-1"]["Extension"] Out[1]= {".dex", ".xl", ".xls"} ``` --- Retrieve a dataset of all available properties for an entity: ```wl In[1]:= Entity["FileFormat", "JPG-1"]["Dataset"] Out[1]= Dataset[Association[EntityProperty["FileFormat", "Applications"] -> {"Adobe Photoshop CS5", "Apple Preview", "Apple Safari", "GIMP", "Microsoft Internet Explorer", "Microsoft Paint", "Mozilla Firefox", "Windows Picture and Fax Viewer", "Wo ... -> Missing["NotAvailable"], EntityProperty["Thing", "EntityClasses"] -> {EntityClass["FileFormat", "RasterImage"]}, EntityProperty["Thing", "EntityTypeList"] -> {EntityType["FileFormat"]}, EntityProperty["Thing", "Name"] -> "JPEG Image"]] ``` --- Identify notable file types recognized by Microsoft Paint: ```wl In[1]:= EntityClass["FileFormat", "Applications" -> MemberQ["Microsoft Paint"]]//EntityList Out[1]= {Entity["FileFormat", "JBMP-1"], Entity["FileFormat", "JPG-1"], Entity["FileFormat", "KDI-1"], Entity["FileFormat", "MSP-2"], Entity["FileFormat", "PNG-1"], Entity["FileFormat", "THM-2"]} ``` ## See Also * [`DisplayFormat`](https://reference.wolfram.com/language/ref/entity/DisplayFormat.en.md) * [`NotableComputer`](https://reference.wolfram.com/language/ref/entity/NotableComputer.en.md) * [`FileFormat`](https://reference.wolfram.com/language/ref/interpreter/FileFormat.en.md) * [`ComputedFileFormat`](https://reference.wolfram.com/language/ref/interpreter/ComputedFileFormat.en.md) * [`FileFormat`](https://reference.wolfram.com/language/ref/textcontent/FileFormat.en.md) ## Related Guides * [Entity Types](https://reference.wolfram.com/language/guide/EntityTypes.en.md) ## History * [Introduced in 2019 (12.0)](https://reference.wolfram.com/language/guide/SummaryOfNewFeaturesIn120.en.md)