The Wolfram Language supports many formats, with many subformats, variants, and options.

"3DS" — 3D Studio format (.3ds)

"7z" — 7z compression and archival format (.7z)

"ACO" — Adobe color palette format (.aco)

"Affymetrix" — Affymetrix microarray formats (.cel, .cdf, .chp, .gin, .psi)

"AgilentMicroarray" — Agilent microarray data format (.txt)

"AIFF" — AIFF Macintosh sound format (.aif, .aiff)

"ApacheLog" — Apache access log file format

"ArcGRID" — ESRI GIS format

"AU" — μ law encoding Unix Audio Format (.au)

"AVI" — Microsoft AVI format (.avi)

"Base64" — Base64 ASCII encoding

"BDF" — BDF physiological signal recordings format (.bdf)

"Binary" — sequence of binary data types

"Bit" — sequence of binary bits

"BMP" — Microsoft bitmap format (.bmp)

"BSON" — JSON-like binary format (.bson)

"Byte" — sequence of 8-bit unsigned integers

"BYU" — BYU 3D geometry format (.byu)

"BZIP2" — bzip2 compression format (.bz2)

"C" — C code generation (.c)

"CDED" — Canadian digital elevation data (.dem)

"CDF" — Wolfram Computable Document Format (.cdf)

"CDX" — ChemDraw Exchange format (.cdx)

"CDXML" — ChemDraw Exchange XML format (.cdxml)

"Character8" — sequence of 8-bit characters

"Character16" — sequence of 16-bit Unicode characters

"CIF" — CIF molecular model format (.cif)

"CML" — Chemical Markup Language (.cml)

"Complex64" — IEEE single-precision complex numbers

"Complex128" — IEEE double-precision complex numbers

"Complex256" — IEEE quad-precision complex numbers

"CSV" — comma-separated values (.csv)

"Cube" — Gaussian Cube file (.cub)

"CUR" — Windows cursor resource format (.cur)

"DAE" — COLLADA digital asset exchange format (.dae)

"DBF" — dBase database file (.dbf)

"DICOM" — DICOM medical image format (.dcm, .dic)

"DICOMDIR" — directory of DICOM files (DICOMDIR)

"DIF" — VisiCalc data interchange format (.dif)

"DIMACS" — DIMACS graph data format (.col, .col.b)

"Directory" — filesystem directory hierarchy

"DOCX" — Microsoft Word format import

"DOT" — DOT graph data format (.gv, .dot)

"DTA" — Stata database transport format (.dta)

"DXF" — AutoCAD 2D and 3D format (.dxf)

"EDF" — EDF physiological signal recordings format (.edf)

"EML" — mail message format

"EPS" — Encapsulated PostScript (.eps)

"ExpressionJSON" — JSON for representing expressions (.json)

"ExpressionML" — Wolfram Language expression XML format (.xml)

"FASTA" — bioinformatics sequence format (.fasta, .fa, .fsa, .mpfa)

"FASTQ" — FASTQ molecular biology format (.fastq, .fq)

"FCHK" — Formatted Checkpoint file (.fchk)

"FCS" — FCS molecular biology format (.fcs, .lmd)

"FITS" — FITS astronomical data and image format (.fit, .fits)

"FLAC" — FLAC lossless audio codec (.flac)

"FLV" — Adobe/Macromedia Flash video format (.flv)

"FMU" — FMI model and simulation exchange format (.fmu)

"GaussianLog" — Gaussian log file (.log)

"GenBank" — GenBank molecular biology format (.gb, .gbk)

"GeoJSON" — geographic data format based on JSON (.geojson)

"GeoTIFF" — annotated TIFF raster files (.tif)

"GIF" — static or animated GIF (.gif)

"GPX" — GPX global positioning data format (.gpx)

"Graph6" — dense graph format (.g6)

"Graphlet" — GML graph data (.gml)

"GraphML" — GraphML graph format (.graphml)

"GRIB" — GRIB scientific data format (.grb, .grib)

"GTOPO30" — USGS global topographic data (.dem)

"GXL" — GXL graph data (.gxl)

"GZIP" — Unix GZIP compression (.gz)

"HarwellBoeing" — Harwell–Boeing sparse matrix format

"HDF" — NCSA hierarchical data format (.hdf)

"HDF5" — NCSA HDF 5 hierarchical data format (.h5)

"HEIF" — High Efficiency Image Format (.heic, .heif)

"HIN" — HyperChen HIN data format (.hin)

"HTML" — HTML format (.htm, .html), including embedded GIFs, CSS, etc.

"HTMLFragment" — HTML fragment (.htm, .html)

"HTTPRequest" — HTTP request as transmitted to a web server

"HTTPResponse" — HTTP response as generated by a web server

"ICC" — ICC color profile format (.icc, .icm)

"ICO" — Windows icon resource format (.ico)

"ICS" — iCalendar format (.ics, .ical, .ifb)

"ICNS" — Macintosh icons format (.icns)

"Ini" — key-value configuration format (.ini)

"Integer8" — sequence of 8-bit signed integers

"Integer16" — sequence of 16-bit signed integers

"Integer24" — sequence of 24-bit signed integers

"Integer32" — sequence of 32-bit signed integers

"Integer64" — sequence of 64-bit signed integers

"Integer128" — sequence of 128-bit signed integers

"ISO" — ISO archival format (.iso)

"JavaProperties" — Java key-value format (.properties)

"JavaScriptExpression" — JSON with objects as associations (.json)

"JCAMP-DX" — chemical spectroscopy format (.jdx, .dx, .jcm)

"JPEG" — JPEG raster image format (.jpeg, .jpg)

"JPEG2000" — JPEG 2000/JP2 raster image format (.jp2, .j2k)

"JVX" — JavaView format (.jvx)

"JSON" — JSON web service description (.json)

"KML" — Google Earth GIS format (.kml, .kmz)

"LaTeX" — LaTeX format (.latex)

"LEDA" — LEDA graph data format (.gw, .lgr)

"List" — numbers or strings, one per line

"LWO" — LightWave 3D file format (.lwo)

"MAT" — MATLAB/Octave data format (.mat)

"MathML" — MathML math content format

"Matroska" — Matroska multimedia container format (.mkv)

"Maya" — Maya entity files (.ma)

"MBOX" — MBOX Unix mailbox format (.mbox)

"MCTT" — Modelica "CombiTimeTable" data format (.txt)

"MDB" — Microsoft Access database file (.mdb)

"MGF" — Wolfram Mathematica MGF bitmap format (.mgf)

"MIDI" — MIDI music format (.mid)

"MMCIF" — MMCIF 3D molecular model format (.cif)

"MO" — Modelica model format (.mo)

"MOBI" — Mobipocket ebook format import

"MOL" — MDL MOL molecular models and drawings format (.mol)

"MOL2" — Tripos MOL2 format (.mol2)

"MP3" — MP3 audio format (.mp3)

"MP4" — MPEG-4 Part 14 video format (.mp4)

"MPS" — MPS linear programming system format (.mps)

"MTP" — Minitab portable worksheet format (.mtp)

"MTX" — Matrix Market sparse matrix format (.mtx)

"MX" — Wolfram Language serialized package format (.mx)

"MXNet" — MXNet net representation format (.json, .params)

"NASACDF" — NASA common data format (.cdf)

"NB" — Wolfram Notebook format (.nb)

"NDK" — NDK seismographic data format (.ndk)

"NetCDF" — Unidata scientific data format

"NEXUS" — NEXUS phylogenetic format (.nex, .nxs)

"NOFF" — 3D object file format with normals (.noff, .cnoff)

"OBJ" — Wavefront OBJ format (.obj)

"ODS" — OpenDocument spreadsheet format (.ods)

"OFF" — 3D object file format (.off, .coff)

"Ogg" — Ogg multimedia container format (.ogg)

"OpenEXR" — OpenEXR raster image format (.exr)

"Pajek" — Pajek graph data format (.net)

"PBM" — ASCII portable bitmap format (.pbm)

"PCAP" — Network packet capture format (.pcap)

"PCX" — Windows Paintbrush format (.pcx)

"PDB" — Protein Data Bank format (.pdb)

"PDF" — Adobe Acrobat PDF format (.pdf)

"PGM" — ASCII portable graymap format (.pgm)

"PHPIni" — PHP-enabled configuration format (.ini)

"PLY" — PLY 3D geometry format (.ply)

"PNG" — PNG raster image format (.png)

"PNM" — ASCII portable raster format (.pnm)

"POV" — POV-Ray ray-tracing object description format (.pov)

"PPM" — ASCII portable color pixmap format (.ppm)

"PXR" — Pixar raster format (.pxr)

"PythonExpression" — Python data format (.py)

"QuickTime" — Apple QuickTime multimedia container format (.mov)

"RAR" — RAR compression and archival format (.rar)

"Raw" — raw image format

"RawBitmap" — pure binary bitmap data

"RawJSON" — JSON with objects as associations (.json)

"RData" — R data format family import

"RDS" — R data format family import

"Real32" — IEEE single-precision real numbers

"Real64" — IEEE double-precision real numbers

"Real128" — IEEE quad-precision real numbers

"RIB" — Renderman interchange format (.rib)

"RLE" — run-length encoding (.rle)

"RSS" — RSS feed format (.rss)

"RTF" — Microsoft Rich Text Format (.rtf)

"SAS7BDAT" — SAS database transport format (.sas7bdat)

"SAV" — SPSS database transport format (.sav, .zsav)

"SCT" — Scitex CT prepress format (.sct)

"SDF" — MDL SDF format (.sdf)

"SDTS" — SDTS DLG and DEM spatial data files

"SDTSDEM" — digital elevation files

"SFF" — SFF molecular biology format (.sff)

"SHP" — ESRI shape file format (.shp)

"SMA" — SystemModeler model archive format (.sma)

"SME" — SystemModeler experiment format (.sme)

"SMILES" — SMILES chemical format (.smi)

"SND" — SND file format (.snd)

"SP3" — geospatial data format (.sp3)

"Sparse6" — sparse graph format (.s6)

"STL" — stereolithography format (.stl)

"String" — arbitrary data as a Wolfram Language string

"SVG" — Scalable Vector Graphics format (.svg)

"SurferGrid" — geospatial data format (.grd)

"SXC" — OpenOffice 1.0 spreadsheet file (.sxc)

"Table" — arbitrary tabular data (.dat)

"TAR" — Unix TAR archive (.tar)

"TerminatedString" — null-terminated string

"TeX" — TeX document format (.tex)

"TeXFragment" — TeX fragment

"Text" — plain text (.txt)

"TGA" — TrueVision Targa format (.tga)

"TIGER" — TIGER/Line GIS format

"TLE" — TLE satellite data format (.tle, .tce)

"TGF" — TGF graph format (.tgf)

"TIFF" — TIFF raster image format (.tiff, .tif)

"TSV" — tab-separated values (.tsv)

"UBJSON" — Universal Binary JSON format (.ubj)

"UnsignedInteger8" — sequence of 8-bit unsigned integers

"UnsignedInteger16" — sequence of 16-bit unsigned integers

"UnsignedInteger24" — sequence of 24-bit unsigned integers

"UnsignedInteger32" — sequence of 32-bit unsigned integers

"UnsignedInteger64" — sequence of 64-bit unsigned integers

"UnsignedInteger128" — sequence of 128-bit unsigned integers

"USGSDEM" — USGS ASCII DEM digital elevation file (.dem)

"UUE" — Unix uuencode format (.uue, .enc)

"VCF" — vCard format (.vcf)

"VCS" — vCalendar format (.vcs)

"VideoFrames" — sequence of raster images

"VRML" — Virtual Reality Modeling Language format (.vrml)

"VTK" — Visualization Toolkit 3D format (.vtk)

"WARC" — Web ARChive format (.warc)

"WAV" — Microsoft WAV audio format (.wav)

"Wave64" — Sony Wave64 audio format (.w64)

"WDX" — Wolfram data exchange format (.wdx)

"WebP" — WebP raster image format (.webp)

"WL" — Wolfram Language package source (.wl)

"WMLF" — Wolfram machine learning format (.wmlf)

"WLNet" — Wolfram Language neural net format (.wlnet)

"WXF" — Wolfram exchange format (.wxf)

"X3D" — X3D XML geometry format (.x3d)

"XBM" — X bitmap format (.xbm)

"XHTML" — XML-syntax HTML (.xhtml)

"XHTMLMathML" — XHTML with embedded MathML

"XLS" — Excel spreadsheet format (.xls)

"XLSX" — Microsoft Excel 2007 format (.xlsx)

"XML" — arbitrary XML (.xml)

"XPORT" — SAS interchange format (.stx, .xpt)

"XYZ" — XYZ molecule geometry file (.xyz)

"ZIP" — Windows ZIP archive (.zip)

"ZPR" — Z Corp 3D printer format (.zpr)

"ZSTD" — Zstandard format (.zstd)