This script allows you to download multiple files from URLs listed in a .txt file. It utilizes multithreading to perform downloads concurrently, enhancing performance. The script also includes functionality for retrying failed downloads and logging errors.

• Multithreaded Downloads: Accelerates the download process by downloading multiple files simultaneously.
• Randomized User-Agent Headers: Helps avoid being blocked by websites by using a variety of user-agent headers.
• Retry Mechanism: Automatically retries failed downloads up to 3 times.
• Progress Bar: Displays download progress using tqdm.
• Error Logging: Logs failed download attempts and errors to separate files.

Ensure you have the following Python packages installed:

• requests for handling HTTP requests.
• tqdm for displaying a progress bar.

You can install these packages using pip:

pip install requests tqdm

Prepare the URL List: Create a .txt file (e.g., 1.txt) containing the URLs of the files you want to download. Each URL should be on a new line.

Run the Script: Run the script using Python:

python download.py

The script will read the URLs from the .txt file, download the files, and save them to the specified output directory.

Create a file named 1.txt with the following content:

https://example.com/file1.zip
https://example.com/file2.zip

Run the script:

python bulk_file_downloader.py

The downloaded files will be saved to the downloads folder.

• txt_file: The name of the .txt file containing the list of URLs.
• output_dir: The directory where the downloaded files will be saved.

• failed.txt: Contains URLs that failed to download after all retry attempts.
• errors.txt: Contains errors that occurred during the download process, including the corresponding URLs.

• Retries: You can adjust the number of retry attempts for failed downloads by modifying the retries argument in the download_file function.
• **Headers: The headers_list can be customized to add or remove user-agent headers.

Ensure that the URLs in the .txt file are valid and accessible. The script automatically creates the output directory if it doesn't exist.

This project is free to use under the MIT License.