The File Merger Too Provided by SEOTools Wizard.com when used helps to reduce the time spent copying and pasting and merging multiple .csv files or .txt files. This tool lets merge multiple .csv files or .txt files into one downloadable file. All you have to do is to just select multiple files to upload, then choose the output filetype, and press the button.
Use txt and csv files only. Large and/or many files may take more time to process.