Are you going to do something bad?

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Across
  1. 4. puzzle online
  2. 5. Large marsupial
  3. 6. and free to use
  4. 7. SVG for full customization
  5. 8. Man's best friend
Down
  1. 1. crossword
  2. 2. marsupial
  3. 3. URL
  4. 9. tablets and phones