File formats: S
Every format whose extension starts with S.
Formats
| Format | Name | About | Main software | |
|---|---|---|---|---|
.S3M | Scream Tracker 3 module | DOS tracker song: up to 32 channels, parapointers to samples and packed patterns. | OpenMPT | DocumentedViewerEditorOpen |
.SAFETENSORS | LoRA adapter | Small low-rank A and B matrices that adjust a base model’s layers. | ComfyUI | DocumentedViewerEditorOpen |
.SAFETENSORS | Safetensors | Model weights after a JSON header, safe to load with no code. | Hugging Face Transformers | DocumentedViewerEditorOpen |
.SBV | YouTube SubViewer captions | YouTube’s plain text captions: a time range line, then the text. | YouTube Studio | DocumentedViewerEditorOpen |
.SCP | SuperCard Pro flux image | A floppy disk recorded as raw flux timings, copy protection and all. | Greaseweazle | DocumentedViewerEditorOpen |
.SER | Java serialised object | Java objects written by ObjectOutputStream, starting AC ED 00 05. | DocumentedViewerEditorOpen | |
.SF2 | SoundFont 2 | A bank of sampled instruments and presets for MIDI playback, in RIFF chunks. | Polyphone | DocumentedViewerEditorOpen |
.SF3 | SoundFont 3 | A SoundFont 2 bank with its samples compressed as Ogg Vorbis. | MuseScore | DocumentedViewerEditorOpen |
.SFC | SNES ROM image | Super Nintendo cartridge ROMs, sometimes behind a 512-byte copier header. | Snes9x | DocumentedViewerEditorOpen |
.SFZ | SFZ sampler instrument | A plain-text sampler instrument: regions mapping WAV or FLAC files to keys. | sforzando | DocumentedViewerEditorOpen |
.SHN | Shorten | Early lossless compression, once standard for trading live concert recordings. | VLC media player | DocumentedViewerEditorOpen |
.SHP | Esri shapefile | Esri’s vector map data: shapes in .shp, index in .shx, attributes in .dbf. | QGIS | DocumentedViewerEditorOpen |
.SID | Commodore 64 SID tune | C64 music as the original 6502 player code, behind a PSID or RSID header. | sidplayfp | DocumentedViewerEditorOpen |
.SIT | StuffIt archive | The classic Mac archive, keeping resource forks, types and creators. | The Unarchiver | DocumentedViewerEditorOpen |
.SKP | SketchUp model | SketchUp’s native model file, read by other programs through Trimble’s SDK. | SketchUp | DocumentedViewerEditorOpen |
.SL1 | Prusa resin print job | A ZIP of one PNG per layer and print settings, for Prusa resin printers. | PrusaSlicer | DocumentedViewerEditorOpen |
.SLDPRT | SolidWorks part | A SolidWorks solid part with the feature history that built it. | SolidWorks | DocumentedViewerEditorOpen |
.SLN | Visual Studio solution | The projects and build configurations of a Visual Studio solution, as text. | Visual Studio | DocumentedViewerEditorOpen |
.SMD | Valve StudioMDL Data | Valve’s text source for models and animations, compiled into studio models. | Blender Source Tools | DocumentedViewerEditorOpen |
.SNAP | Snap package | Linux apps for snapd: a read-only SquashFS image with meta/snap.yaml. | snapd | DocumentedViewerEditorOpen |
.SNOOP | Solaris snoop capture | Solaris packet captures: a 16-byte header, then timestamped packet records. | Wireshark | DocumentedViewerEditorOpen |
.SPV | SPIR-V shader module | Compiled shaders for Vulkan and OpenGL, as a stream of 32-bit words. | glslang | DocumentedViewerEditorOpen |
.SQL | SQL database dump | A database backup as SQL text: CREATE TABLE, then INSERT for every row. | mysqldump | DocumentedViewerEditorOpen |
.SQLITE | SQLite database file | Two SQLite database formats: SQLite 3, used today, and the older SQLite 2. | DocumentedViewerEditorOpen | |
.SQLITE | SQLite 2 database file | The older SQLite database file, from before 2004; SQLite 3 cannot open it. | DocumentedViewerEditorOpen | |
.SQLITE | SQLite 3 database file | A whole SQL database in one file, in pages of B-trees. | DB Browser for SQLite | DocumentedViewerEditorOpen |
.SREC | Motorola S-record | Firmware as lines of S-records, each with a type, address and checksum. | SRecord | DocumentedViewerEditorOpen |
.SRT | SubRip subtitles | Plain text subtitles: numbered cues, each with a time range and its text. | VLC media player | DocumentedViewerEditorOpen |
.STEP | STEP product model | The ISO 10303 standard for exact solid models, the neutral format between CAD systems. | FreeCAD | DocumentedViewerEditorOpen |
.STL | ASCII STL | The text form of STL: each triangle a facet of three vertex lines. | PrusaSlicer | DocumentedViewerEditorOpen |
.STL | Binary STL | The usual form of STL: a header, a count, then 50 bytes per triangle. | PrusaSlicer | DocumentedViewerEditorOpen |
.STL | Stereolithography | A surface of triangles and nothing else, the standard input for 3D printing. | PrusaSlicer | DocumentedViewerEditorOpen |
.SUB | MicroDVD subtitles | Text subtitles timed in frames: start frame, end frame and text on one line. | VLC media player | DocumentedViewerEditorOpen |
.SUP | Blu-ray PGS subtitles | Blu-ray subtitles as images: PG segments with palettes and bitmaps. | Subtitle Edit | DocumentedViewerEditorOpen |
.SVG | Scalable Vector Graphics | The web’s vector format: shapes, text and gradients written as XML. | Inkscape | DocumentedViewerEditorOpen |
.SYM | Breakpad symbol file | Google Breakpad’s text symbols for turning crash addresses into names. | Breakpad | DocumentedViewerEditorOpen |