Publishing in high index journals for free without any article processing charges (APCs) can be challenging, as most reputable journals charge a fee for publishing an article. However, here are some tips that can help you publish in high index journals for free:

1. Identify journals with no APC: Some journals don't charge APC, and you can find them by searching for "no APC journals" or "free journals" online. Be sure to check the journal's reputation before submitting your paper to ensure that it is a reputable journal.

1. Check if your institution has an agreement with the publisher: Some publishers have agreements with institutions that allow researchers to publish their articles in specific journals for free. Check with your institution's library to see if such an agreement exists and which journals are included.

1. Look for grant-funded journals: Some journals receive funding from grants or other sources that cover the publishing costs. These journals may not charge APC, but they may have specific criteria or requirements for authors, such as focusing on specific topics or having particular affiliations.

1. Consider preprint servers: Preprint servers, such as arXiv or bioRxiv, allow you to upload your research papers for free, and they are often used as a pre-publication platform before submitting to a journal. Some high index journals also accept papers that have been previously published as preprints.

1. Write a high-quality paper: A well-written and well-researched paper has a higher chance of being accepted by a high index journal, even if it charges APC. Therefore, it is important to ensure that your paper is of high quality and meets the journal's requirements.

Tips for free Scopus international journal without APC

1. Choose the right journal: Select a journal that has a fast review and publication process. You can search for journals that provide fast publication times and that fit your research topic.
2. Follow the submission guidelines: Make sure you follow the submission guidelines precisely. This includes formatting, word count, and referencing style. If you don't adhere to the guidelines, your paper may be returned or delayed.
3. Write a clear and concise paper: Make sure your paper is clear and concise, and avoid unnecessary jargon. This will make it easier for the reviewers to read and understand your work.
4. Get feedback from colleagues or mentors: Have others review your work before submission. They may catch errors or suggest improvements that can help you get published more quickly.
5. Respond promptly to reviewer comments: Once you receive feedback from the reviewers, respond as quickly as possible. Address their comments and make the necessary changes. This can speed up the review process and increase your chances of acceptance.
6. Use preprint servers: As mentioned in the previous answer, you can use preprint servers to upload your research papers for free, and they are often used as a pre-publication platform before submitting to a journal. This can help to get your research out to the public faster.

Choosing the right journal, following submission guidelines, writing a clear and concise paper, getting feedback, responding promptly to reviewer comments, and using preprint servers can all help to speed up the publication process. In summary, publishing in high index journals for free without APCs can be challenging, but there are ways to achieve it. You can consider journals that don't charge APCs, check if your institution has agreements with publishers, look for grant-funded journals, consider preprint servers, and ensure that your paper is of high quality.

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