HKT's WhatsApp Chat Reader and PDF Convertor is a web-tool aimed to help users view their WhatsApp back-up chats in a familiar user-interface.
You can select the text file of your chat with media files all together to the "Choose Files" and it will process and render user in the chat. Select user and view chat.
The tool is completely secure to use. It does not upload any of your files, chat or pdf to website. It work offline as well. If you have loaded the webpage once, then you can turn you internet off. and you can use this offline to ensure your privacy.
You can upload your WhatsApp Text file which is of format .txt that you get from the Export Chat option in your WhatsApp app.