Supported Data Types by File Extension
Tip · You can search ( ⌘/Ctrl + F) or scan the tables below. A quick one-line description accompanies every extension so you know what program or standard created it.
📄 Documents & Presentations
| Extension | Format / App | Brief description |
|---|---|---|
| Portable Document Format | Universal read-only documents with embedded fonts & layout fidelity | |
| 602 | T602 | Legacy Czech/Slovak text-processor files (T602) |
| abw | AbiWord | Open-source word-processor document |
| cgm | Computer Graphics Metafile | Vector/bitmap hybrid for technical illustrations |
| cwk | ClarisWorks / AppleWorks | Legacy ClarisWorks word-processing file |
| doc | Microsoft Word 97-2003 | Binary Word document |
| docx | Microsoft Word | Modern OOXML Word document |
| docm | Word (macro-enabled) | Word document with embedded VBA macros |
| dot | Word Template 97-2003 | Reusable document template |
| dotm | Word Template (macro-enabled) | Template with VBA macros |
| hwp | Hangul Word Processor | Popular word-processor in Korea |
| key | Apple Keynote | macOS/iOS presentation deck |
| lwp | Lotus Word Pro | IBM Lotus office suite document |
| mw | MacWrite | Classic Mac OS word-processing file |
| mcw | Microsoft Works | Obsolete Works word-processor file |
| pages | Apple Pages | macOS/iOS page-layout & word-processing file |
| pbd | Apple Works/Plan (Print Shop Deluxe) | Legacy page layout or photo book file |
| ppt | Microsoft PowerPoint 97-2003 | Binary slide deck |
| pptm | PowerPoint (macro-enabled) | Slide deck with VBA macros |
| pptx | Microsoft PowerPoint | Modern OOXML slide deck |
| pot | PowerPoint Template 97-2003 | Reusable presentation template |
| potm | PowerPoint Template (macro-enabled) | Template with macros |
| potx | PowerPoint Template | Modern template |
| rtf | Rich Text Format | Universal formatted text interchange |
| sda / sdd / sdp / sxi / sti | StarOffice / OpenOffice Impress | Legacy StarOffice & early OpenDocument presentations |
| sdw / sxw / stw / sxg / sgl | StarOffice / OpenOffice Writer | Legacy StarOffice & early OpenDocument text documents |
| txt | Plain Text | Unformatted text (UTF-8, ASCII, etc.) |
| uof / uop / uot | Unified Office Format (China) | XML-based open-source office suite standard |
| vor | StarOffice Template | Template file for StarOffice apps |
| wpd | WordPerfect Document | Corel WordPerfect file |
| wps | Microsoft Works Word Processor | Obsolete Works document |
| xml | eXtensible Markup Language | Markup for structured data – may encode documents |
| zabw | Zipped AbiWord | Compressed AbiWord document |
| epub | EPUB eBook | Reflowable digital book (XHTML + META) |
🖼️ Images & Web Graphics
| Extension | Format | Brief description |
|---|---|---|
| jpg / jpeg | JPEG | Lossy compressed photograph |
| png | Portable Network Graphics | Lossless raster with alpha transparency |
| gif | Graphics Interchange Format | Indexed-color & simple animation support |
| bmp | Windows Bitmap | Uncompressed raster image |
| svg | Scalable Vector Graphics | XML-based resolution-independent graphics |
| tiff | Tagged Image File Format | High-quality raster; supports layers & CMYK |
| webp | WebP | Modern web-optimized lossy/lossless raster |
| web | Web configuration / generic | Some cameras/web tools save .web as raw or preview JPEG; treat as image |
| htm / html | HTML Document | Web page that may embed images and markup |
📊 Spreadsheets & Data Tables
| Extension | Format / App | Brief description |
|---|---|---|
| xlsx | Excel Workbook (OOXML) | Modern spreadsheet with functions & charts |
| xls | Excel 97-2003 Workbook | Binary spreadsheet |
| xlsm | Excel Macro-enabled Workbook | VBA-enabled XLSX |
| xlsb | Excel Binary Workbook | Efficient binary XLSX variant |
| xlw | Excel Workspace | Layout of multiple workbooks |
| csv | Comma-Separated Values | Plain-text tabular data |
| tsv | Tab-Separated Values | Plain-text tabular (tab-delimited) |
| dif | Data Interchange Format | Early text-based spreadsheet exchange |
| sylk / slk | Symbolic Link Format | Legacy spreadsheet interchange |
| prn | Space-/fixed-width text | Print-formatted table export |
| numbers | Apple Numbers | macOS/iOS spreadsheet |
| et / eth | WPS Office Spreadsheets | Kingsoft ET format |
| ods / fods | OpenDocument Spreadsheet | OASIS ODF spreadsheet (flat <fods> is single XML) |
| uos1 / uos2 | Uniform Office Spreadsheet | China UOF 1.x / 2.x spreadsheet |
| dbf | dBASE Database File | Flat-file DB used by spreadsheets/GIS |
| wk1 / wk2 / wk3 / wk4 / wks | Lotus 1-2-3 | Classic Lotus spreadsheets |
| 123 | Lotus 1-2-3 | Another Lotus extension |
| wq1 / wq2 / wb1 / wb2 / wb3 | Quattro Pro | Corel Quattro Pro spreadsheet files |
| qpw | Quattro Pro Workbook | Modern Quattro Pro |
| xlr | Microsoft Works Spreadsheet | Obsolete Works sheet |
🎧 Audio
| Extension | Format | Brief description |
|---|---|---|
| mp3 | MPEG-1/2 Audio Layer III | Ubiquitous lossy audio |
| mp4 / mpeg / mpga | MPEG-4 / MPEG-1 Audio | MPEG container audio tracks |
| m4a | MPEG-4 Audio | iTunes AAC/ALAC audio |
| wav | Waveform Audio File | Uncompressed PCM audio |
| webm | WebM | Opus/Vorbis audio in Matroska |
Why so many legacy formats?
Modified at 2025-05-08 07:44:27