Extract text from UF2 files
To convert your UF2 file to another format, you need Microsoft MakeCode or other Developer software.
To convert other file formats to the "Firmware Image" file type, you need software like Microsoft MakeCode or a similar tool.
The .uf2 (USB Flashing Format) is a container format developed by Microsoft for flashing microcontrollers over the USB Mass Storage Class (MSC) protocol. It allows boards like the Raspberry Pi Pico, Adafruit Feather, and BBC micro:bit to appear as flash drives (e.g., RPI-RP2) when connected to a PC. Unlike a raw BIN file, UF2 consists of independent 512-byte blocks with embedded addressing and magic numbers (UF2\n), which makes it robust against operating systems that write blocks out of order or add metadata (like macOS Indexing).
The biggest obstacle for users is that a .uf2 file is a compiled binary executable, not a source code file. You cannot open it in a text editor like VS Code to modify the script. If you have lost the original TS (TypeScript), PY (Python), or CPP source, the file effectively becomes a 'black box.' However, .uf2 files generated by Microsoft MakeCode often contain the source code compressed within a specific data block. For editing or reverse engineering, the best workflow is to convert the file to BIN or HEX for use with hardware programmers (like esptool), or use specialized extraction tools to recover the embedded source code.
Convert.Guru analyzes your UF2 file, detects the exact format, and lets you read the text inside.
Users also converted HEX, BIN, NES, ELF, ZIP, DSK, TXT, XAPK, INO, IDML, BTW, SPV and TSX files.
If you want to convert UF2 file to BIN, HEX, ELF, SYS, DLL, EXE, DRV, VXD, 386, COM, BAT or CMD, you can use Microsoft MakeCode or similar software from the "Microcontroller Firmware Flashing" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to UF2, try Microsoft MakeCode or another comparable tool in the "Microcontroller Firmware Flashing" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our UF2 converter.