Watermark Options

BatchWatermark Image supports two watermark types — image and text — that can be used independently or together.

Image watermark

An image watermark overlays a logo, stamp, or signature graphic on top of each photo.

Best formats for your watermark file:

  • PNG with transparency — the most common choice; the transparent areas are preserved so only the logo shows
  • JPG — works, but has no transparency; the watermark will have a rectangular background
  • WebP — supported, with or without transparency

Opacity

Controls how transparent the watermark appears over the image.

  • 0% — fully invisible
  • 50% — semi-transparent (default)
  • 100% — fully opaque, no bleed-through from the base image

For a subtle watermark that doesn’t distract from the subject, 30–50% is a common range.

Scale

Controls how wide the watermark is, expressed as a percentage of the base image’s width.

  • 10% — small logo in a corner
  • 20% — moderate size (default)
  • 50% — dominant watermark
  • 100% — watermark as wide as the entire image

Scale is proportional — the watermark’s aspect ratio is preserved. A 10% scale on a 4000px image produces a 400px-wide watermark.

Text watermark

A text watermark stamps any text string onto the image using a font installed on your Windows system.

Font

Any font installed on Windows is available in the font dropdown. The font is rendered server-side using the same font name — what you see in the preview is what you get in the output.

Size

Font size in points, from 8 to 600. For a typical 3000px-wide photo:

  • 72 pt (default) — subtle one-line text
  • 150–200 pt — clearly visible signature or copyright
  • 400+ pt — large statement watermark

Color

Pick any color using the color swatch. White (#ffffff) with some transparency is a classic choice for photos. Dark colors work better on light backgrounds.

Opacity

Same behavior as image watermark opacity — 0% invisible to 100% fully opaque.

Using both at once

Enable both the Image and Text toggles to composite them in a single pass. Both watermarks share the same position, margin, and rotation settings. They are layered on top of each other — image first, then text — so the text appears above the image watermark if they overlap.

Positioning

9-position grid

The grid places your watermark at one of nine anchor points on the image:

↖  ↑  ↗
←  ⊙  →
↙  ↓  ↘

The Margin value controls the distance in pixels between the watermark and the nearest edge. A margin of 20px keeps a small gap between the logo and the image border.

When Repeat / Tile is enabled, the position grid is disabled — the watermark tiles across the entire image instead.

Repeat / Tile

Tiles the watermark continuously across the full image area. Useful for:

  • Full-coverage copyright protection
  • Diagonal pattern watermarks (combine with rotation)
  • Preventing cropping out a corner watermark

The tile spacing is determined by the Margin value — larger margin means more space between tiles.

Rotation

Rotates the watermark from -180° to 180°.

  • 0° (default) — no rotation
  • -30° to -45° — a popular diagonal angle for tiled watermarks
  • 180° — upside down

Rotation applies to both image and text watermarks.

Live preview

The Preview panel on the right of the app shows a reduced-resolution preview of your watermark settings applied to a sample image from your folder.

  • Watermarked — the output with the watermark applied
  • Original — the unmodified source image
  • Split — both side by side for direct comparison

Use Previous and Next to cycle through different images in your folder. The preview refreshes automatically as you change settings (with a short debounce delay).

The preview uses a maximum width of 1200px for performance — it is a visual proof for placement and opacity, not a pixel-accurate rendering of the final output.