The 'Article Rewriter Tool' is designed to transform, or 'rewrite', text by using advanced algorithms to ensure the original meaning is maintained. The tool contains five different modes for various text alteration purposes.

The 'Word Changer' mode is crafted to target individual words in the input text and replace them with suitable synonyms. On the other hand, 'Sentence Rewriter' mode is created to reconstruct the sentences without changing the meaning.

For eliminating plagiarism, 'Plagiarism Remover' mode can rewrite the content to become unique and original, while the 'AI Rewriter' mode utilizes AI algorithms to understand the text's context, hence making substantial changes without distorting the original sense.

Lastly, the 'Paragraph Rewriter', which is also AI-powered, rewrites the content at the paragraph level, introducing smart alterations. The tool also incorporates features for checking grammar and improving readability, thus outputting content free of grammatical errors and spelling mistakes.

Users can use this tool seamlessly, either by pasting the text directly or uploading the file, and the result is quickly returned. Suitable for a wide range of content such as blog posts, academic texts, and marketing content.