In the free online editor Pixlr, use the tool: Pixlr Express or Pixlr Editor.
(1) Create a new project.
(1) Choose the right format: recommended 1600x900px.
(2) Click "Create".
Create and edit your text individually.
Save your file as png with transparent background!
If you have any questions contact us or get directly to the support page of pixlr.
Further links: