Choose one static image
Type, signature, animation, bytes, decoded dimensions and pixel area are checked before editing.
Visible text · local Canvas
Add a text watermark without uploading
WatermarkLocal validates one static image, draws one bounded Unicode text line at a deterministic anchor and exports the complete frame inside an isolated no-network capsule.
No account · no upload · nine positions · same Blob preview/download
Three explicit steps
From a local image to one marked file
Compose one text line
Enter up to 120 Unicode characters and choose one of nine anchors with exact source-pixel size, margin, opacity and rotation.
Generate and download one Blob
Choose PNG, JPEG or WebP. Preview and download reference the same exact local result.
Ordinary digital publishing
Useful when a visible label should travel with an image
- Add a creator name to a portfolio preview before publishing.
- Place an event label on ordinary recap photos.
- Mark a design preview as a draft during routine collaboration.
JPEG, PNG and WebP · no upload
Add one visible text mark locally
Choose one image, write the mark, set its position, size, opacity, angle and colour, then download the exact local Blob.