Extract text from Waveform log files (WLF)
To convert WLF Waveform logs to another format, you need ModelSim or other Data software.
To convert other file formats to the "Waveform Log File" file type, you need software like ModelSim or a similar tool.
The .WLF (Waveform Log File) format is primarily used in Electronic Design Automation (EDA) by Mentor Graphics ModelSim and QuestaSim to store digital logic simulation results. Hardware engineers rely on these files to visualize signal states and timing over the course of a simulation run. Secondarily, the .WLF extension is used for barcode label designs in software like Wasp Labeler, WinLabel, and Labeljoy, as well as live wallpaper project archives in the Wonderland Live Wallpaper app.
The main disadvantage of .WLF waveform files is their strict vendor lock-in. They are proprietary binary files that require an expensive, specialized ModelSim license to open. Furthermore, EDA simulation files can quickly exceed 100MB or even several Gigabytes, making them cumbersome to share with external teams or archive efficiently. Label design .WLF files face similar software dependencies, meaning they cannot be edited in standard vector graphic tools.
To overcome these limitations, you must convert the file. For hardware debugging and cross-platform sharing, convert your simulation .WLF to the industry-standard VCD (Value Change Dump) format, which can be viewed in open-source tools like GTKWave. For documentation, exporting waveform screenshots or label designs to PDF or PNG is the most practical choice. If you are handling a live wallpaper .WLF, it is actually a compressed archive - convert or rename it to ZIP to access the raw images and scripts. Drop your file here to view and convert it securely right in your browser.
Convert.Guru analyzes your WLF file, detects the exact format, and lets you read the text inside.
Users also converted WRF, JSON, KDT, PTM, SLC and VCD files.
If you want to convert WLF file to VCD, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use ModelSim or similar software from the "Simulation Waveform Data Storage" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to WLF, try ModelSim or another comparable tool in the "Simulation Waveform Data Storage" 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 WLF converter.