Image watermark & batch annotation

Add one visible text label to local image copies and download numbered PNGs in a ZIP.

Tool guide

How to use Image watermark & batch annotation

Add one visible text label to local image copies and download numbered PNGs in a ZIP.

  1. Choose local input and settings, or try the labelled synthetic sample. File selection does not read content; processing starts after the explicit action.
  2. 1–10 still images; 10 MiB/4 MP each; 40 MiB and 20 MP total; 120-code-point label; ZIP ≤32 MiB.
  3. Adds the same literal visible label to PNG copies; originals remain unchanged. Label must fit every image. Oriented dimensions/transparency remain, source metadata is discarded. System-font glyphs/appearance vary. Watermarks are removable; this is not redaction, copy protection or a certified signature.
  4. Review the preview and exported result. Cancel stops the disposable local worker; edit/Clear/leave discards old results and download links. Input files are not changed or uploaded; working data is not saved to an account. Downloaded files remain on your device.
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