Tool Introduction
This tool is an efficient and convenient online batch file type detection tool, capable of quickly and accurately identifying the true type and format of various files. It does not rely on file extensions but rather provides reliable file type identification results by deeply analyzing internal features such as Magic Numbers. Whether you need to batch manage unknown files, categorize files, perform security reviews, or use it as a preprocessing step before data analysis, this tool can significantly improve your work efficiency and data accuracy. It supports the detection of hundreds of common file types, including images, documents, archives, videos, audio, and more, making it a powerful assistant for your file processing needs.
How to Use
- Upload Files: You can upload one or more files by clicking the “Select Files” button on the page, or by directly dragging them to the designated area. This tool supports batch uploads, allowing you to upload multiple different types of files for detection at once.
- Start Detection: After files are uploaded, click the “Start Detection” button on the page. The system will automatically perform in-depth analysis and type identification for each uploaded file.
- View Results: Once detection is complete, the page will display detailed detection results for each file in a clear list or table format, including the original filename, the detected true file MIME type (e.g.,
image/jpeg, application/pdf), recommended file extension (e.g., .jpg, .pdf), and a brief description of the file type.
- Export Results (Optional): Some advanced features may support downloading the detection report as a CSV or Excel file, facilitating subsequent data organization and analysis.
Frequently Asked Questions
- Q: How does this tool primarily identify file types?
- A: This tool primarily identifies the true type of a file by analyzing its “Magic Number”, file header information, and specific file structure, rather than solely relying on the file extension, thereby providing more accurate identification results.
- Q: Why is the extension of my uploaded file inconsistent with the detection result?
- A: This is the core value of this tool. File extensions can be arbitrarily changed, but the actual content of the file is key to determining its true type. This tool aims to correct such misleading information and reveal the true nature of your files. For example, if a file named
image.txt contains JPEG image data, the tool will correctly identify it as image/jpeg.
- Q: What types of files are supported for detection?
- A: We support the identification of most common file types on the market, including but not limited to images (JPG, PNG, GIF, BMP, etc.), documents (PDF, DOCX, XLSX, PPTX, etc.), archives (ZIP, RAR, 7Z, etc.), videos, audio, executable files, and hundreds of other formats. Supported types will continuously increase with technological updates.
- Q: Are there limits on the number or size of files for batch detection?
- A: To ensure service stability and responsiveness, we may set certain limits on the number of files or total file size for a single upload. Specific limits will be dynamically adjusted based on server load and resource conditions; please refer to the prompts on the page.
- Q: Will my files be uploaded to the server and stored? Is it secure?
- A: Files need to be uploaded to the server for file type analysis. However, we promise that your files will not be stored after analysis, and SSL/TLS encryption measures will be used to protect data security during transmission. We highly value user privacy.
Notes
- Network Environment: File upload and detection require a certain amount of network bandwidth and time, especially for large or batch files. Please ensure your network connection is stable and wait patiently for the processing results.
- Results for Reference: Although this tool strives for accurate identification, file type recognition is a complex process. In extreme cases (such as severely corrupted, deeply encrypted, or unusually formatted files), identification deviations may occur, and detection results are for reference only.
- File Size and Quantity: Avoid uploading excessively large or too many files at once, as this may lead to upload failure, detection timeout, or slow service response. It is recommended to process files in batches according to page prompts for the best user experience.
- Privacy and Security: While we promise that your files will not be stored after analysis and that transmission is encrypted, if you are handling extremely sensitive or confidential files, please assess the risks of online tools yourself, or consider using offline file analysis tools.
- Malicious Files: This tool is primarily for file type identification and does not have antivirus or security scanning capabilities. Please do not upload files of unknown origin or those that may contain malicious code, to avoid potential risks to your device or system.
