WhatsOnTool directory

Logo Watermark

Overlay the second image as a proportional logo.

Open this tool

A logo overlay should be sized in relation to the base image, not pasted at an arbitrary pixel scale.

Upload the base and logo separately, then inspect placement and opacity.

Inputs and controls

Images in order

Source images

JPEG, PNG, WebP

Static images. Up to 4 MiB per file, 12 MiB total and 4 million pixels per image. At most six source images.

Logo image

Source images

JPEG, PNG, WebP

Logo width as percentage

Tool inputs

Allowed range: 1 to 80

Logo opacity

Tool inputs

Allowed range: 1 to 100

Logo placement

Tool inputs

Bottom right, Bottom left, Top left, Top right, Centre

Download format

Tool inputs

PNG, preserves alpha, JPEG, flattens alpha, WebP, server support needed

Quality

Tool inputs

Allowed range: 1 to 100

How to use

Why use this tool

Proportional sizing makes the logo treatment easier to repeat on differently sized pictures.

Before relying on the result

Compare the finished picture with its source. Use a suitable logo with alpha and review the final output format. JPEG flattening does not retain overall transparency.

Questions

Can transparent logo edges be preserved?

Use a suitable logo with alpha and review the final output format. JPEG flattening does not retain overall transparency.

What should I check before using Logo Watermark?

Prepare a supported source image and check Logo width as percentage, Logo opacity, Logo placement and Download format. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified: 2026-10-04T18:22:35+00:00. This profile describes the tool; use its page to run it.

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