Anki Pro supports adding cards from CSV files and Quizlet. Here's how you can do it:
In order to import such cards, you need to:
Open Anki Pro on the web.
Create a new deck.
Click "Import cards."
You'll see a text field where you can input information that will be converted into flashcards. Use the settings field to make necessary adjustments for the flashcards to appear correctly in the preview below.
Import from Spreadsheets
To import cards from spreadsheets (Google Sheets, Excel, CSV), simply copy the content and paste it into the text field in Anki Pro.
Import from Quizlet
To import cards from Quizlet, follow these instructions:
Open the export tab in Quizlet.
You'll notice a field with text containing your flashcards. Adjust the settings to match Anki Pro's text settings.
Click "copy" text in Quizlet and paste it into the text field in Anki Pro.