The chat history exporter in Skype for Windows desktop lets you export your conversation history in CSV format so that you can keep it outside of Skype.
Remember, the last 30 days of your conversation history are stored in the cloud, so won't be exported. Only the history saved on your hard drive, according to your 'keep history for' setting, is exported.
To export your chat history:
- Select Tools > Options.
- On the left, select Privacy.
- Select the Export Chat History button.
- Choose a location to save the file to, then select Save.
You can use the CSV file with any spreadsheet program, such as Microsoft Excel. Be aware that some content, for example media files, is not exported; shared URLs and similar content is exported within XML tags; some messages may be split into separate rows due to formatting issues.