File Corruptor

A professional file corruption tool that supports 6 corruption methods, custom corruption levels and target areas, and batch file processing for software testing.

Bug report

Browser execution mode: Your data is processed in your browser and is not uploaded to the server.

Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Instructions

Software Usage Instructions

Select files: Click the “Select or drag and drop files” area to choose the files for which you want to generate corrupted versions. Batch selection of files in any format is supported. The list will show the first 20 files, and the remaining files will be processed together.
Set the corruption method:
- Corruption level: Set a corruption ratio from 1% to 99% using the slider or number field. The higher the ratio, the more data in the output file will be affected.
- Corruption algorithm: Choose from random byte replacement, zero-byte filling, bit flipping, byte position shuffling, inserting random data, or deleting random bytes.
- Corruption mode: Supports scattered corruption, concentrated corruption, sequential corruption, and periodic corruption to simulate different types of data anomalies.
- Random seed: After entering a seed, the same file and the same parameters can generate consistent test results, making experiments easier to reproduce.
Set area rules:
- Target area: Choose the entire file, first 25%, middle 50%, last 25%, or a custom percentage range.
- Header and footer protection: Protect the first 512 bytes and last 512 bytes of the file, suitable for preserving some format identification information.
- File size limit: Choose a limit of 10MB, 50MB, 100MB, 250MB, or 500MB based on your device performance.
- File naming rules: Choose whether to append the “_corrupted” suffix; if duplicate names are encountered, numbers will be automatically appended to distinguish them.
Save settings: Click “Save settings” to keep the current parameters, which will be automatically loaded the next time you open the tool.
Start processing: Go to the “Process and download” page and click “Start corrupting files”. The tool will process all selected files using the current parameters.
Download results: After processing is complete, you can download result files individually, or click “Download results ZIP” to get all successfully processed files and the processing report.

FAQ

A: It is suitable for scenarios such as software exception handling tests, file reading fault-tolerance tests, upload validation tests, data recovery workflow verification, and file format compatibility tests. It is recommended for legal testing and research only.

A: Random byte replacement rewrites data at target positions; zero-byte filling sets target data to 0; bit flipping reverses the bits of bytes; byte shuffling swaps data positions; inserting random data makes the file larger; deleting random bytes makes the file smaller.

A: The header of many files contains format identifiers, while the footer may contain indexes, directories, or checksum information. Protecting these areas can simulate a situation where the “file is still recognizable but the content is abnormal,” making it easier to test repair and compatibility capabilities.

A: The random seed is used to reproduce test results. When the same parameters and the same seed are used on the same file, consistent corruption results can be generated, making regression testing, issue diagnosis, and algorithm comparison easier.

A: By default, the original file name is preserved as much as possible. If multiple output files have duplicate names, the tool appends numbers to the file names to distinguish them. You can also enable “Add file name suffix” to append “_corrupted” before the extension.

A: Large files use more memory and processing time. It is recommended to set the file size limit according to your device’s performance, process large batch tasks in batches, and keep copies of the original files before processing.

Answer: Whether recovery is possible depends on the type of corruption, the extent of the damage, and the file format structure. Minor corruption may still be partially repairable, while a high degree of damage is usually difficult to recover from. Please back up the original file before use.