| File Type | Extension |
| AHDL Include File | .inc |
| ATOM Netlist File | .atm |
| Block Design File | .bdf |
| Block Symbol File | .bsf |
| BSDL file | .bsd |
| Chain Description File | .cdf |
| Comma-Separated Value File | .csv |
| Component Declaration File | .cmp |
| Compressed Vector Waveform File | .cvwf |
| Conversion Setup File | .cof |
| Cross-Reference File | .xrf |
| database files | .cdb, .hdb, .rdb, .tdb |
| DSP Block Region File | .macr |
| EDIF Input File | .edf, .edif, .edn |
| Global Clock File | .gclk |
| Graphic Design File | .gdf |
| HardCopy files | .datasheet, .sdo, .tcl, .vo |
| Hexadecimal (Intel-Format) File | .hex |
| Hexadecimal (Intel-Format) Output File | .hexout |
| HSPICE Simulation Deck File | .sp |
| HTML-Format Report File | .htm |
| I/O Pin State File | .ips |
| IBIS Output File | .ibs |
| In System Configuration File | .isc |
| Jam Byte Code File | .jbc |
| Jam File | .jam |
| JTAG Indirect Configuration File | .jic |
| Library Mapping File | .lmf |
| License File | license.dat |
| Logic Analyzer Interface File | .lai |
| Memory Initialization File | .mif |
| Memory Map File | .map |
| PartMiner edaXML-Format File | .xml |
| Pin-Out File | .pin |
| placement constraints file | .apc |
| Programmer Object File | .pof |
| programming files | .cdf, .cof |
| QMSG File | .qmsg |
| Quartus II Archive File | .qar |
| Quartus II Archive Log File | .qarlog |
| Quartus User-Defined Device File | .qud |
| Quartus II Default Settings File | .qdf |
| Quartus II Exported Partition File | .qxp |
| Quartus II Project File | .qpf |
| Quartus II Settings File | .qsf |
| Quartus II Workspace File | .qws |
| RAM Initialization File | .rif |
| Raw Binary File | .rbf |
| Raw Programming Data File | .rpd |
| Routing Constraints File | .rcf |
| Signal Activity File | .saf |
| SignalTap II File | .stp |
| Simulator Channel File | .scf |
| SRAM Object File | .sof |
| Standard Delay Format Output File | .sdo |
| Symbol File | .sym |
| Synopsys Design Constraints File | .sdc |
| Tab-Separated Value File | .txt |
| Tabular Text File | .ttf |
| Tcl Script File | .tcl |
| Text Design File | .tdf |
| Text-Format Report File | .rpt |
| Text-Format Timing Summary File | .tan.summary |
| Timing Analysis Output File | .tao |
| Token File | ted.tok |
| Vector File | .vec |
| Vector Table Output File | .tbl |
| vector source files | .tbl, .vwf, .vec |
| Vector Waveform File | .vwf |
| Verilog Design File | .v, .vh, .verilog, .vlg |
| Verilog Output File | .vo |
| Verilog Quartus Mapping File | .vqm |
| Verilog Test Bench File | .vt |
| Value Change Dump File | .vcd |
| version-compatible database files | .atm, .hdbx, .rcf, .xml |
| VHDL Design File | .vhd, .vhdl |
| VHDL Output File | .vho |
| VHDL Test Bench File | .vht |
| XML files | .cof, .stp, .xml |
| waveform files | .scf, .stp, .tbl, .vec, .vwf |