BrowserTools

Image Watermark Tool

Add text watermarks with position & opacity

By Guga — BrowserTools maintainer, Tbilisi, Georgia Updated 2026-08-30
Free Private No uploads
What is Image Watermark Tool?

A watermark that is a layer on top of a page can be cropped out. One that lives in the pixels cannot. This draws your text directly into the image and hands you a new PNG, so the mark travels with the file through screenshots, re-uploads, and reposts. Four things are adjustable: the text itself, the colour, the size expressed as a percentage of the image's width so it scales sensibly across a thumbnail and a full-resolution export, and the opacity. Position is one of five anchors — four corners plus centre. A soft drop shadow is applied automatically, which is what keeps light text readable over a bright sky without you having to pick a colour that fights the picture. This is a visible deterrent, not encryption; treat it as a mark of ownership, not a lock.

Add text watermarks to images with control over position, size, color and opacity. Protect your photos before publishing — everything renders locally.

Private Image Watermark Tool In Your Browser

Image Watermark Tool is processed locally with client-side JavaScript. Your files never touch a server, and there is no queue to wait in.

Step-by-Step

How to use Image Watermark Tool

1

Add your file to the Drop an image to watermark target, which accepts any image format.

2

Type your mark into Watermark text and pick a colour with the colour input.

3

Set Font size as a percentage of the image width and Opacity, then choose one of the five position buttons.

4

Press Apply watermark and download the PNG, with the text permanently composited into the pixels.

Key Capabilities
  • Text, colour, size, and opacity are all adjustable before you apply the mark
  • Font size is expressed as a percentage of image width, so it scales proportionally across different images
  • Five anchor positions are available: the four corners and the centre
  • A soft drop shadow is applied automatically so light text stays legible on bright backgrounds
Common Use Cases
  • A photographer sending proofs to a client so the preview images cannot be reused without a credit.
  • A stock artist stamping her name across a set of sample images before listing them.
  • A blogger preparing images for a portfolio post so they survive being saved and re-shared.
Clear Answers

Frequently Asked Questions

Can someone remove the watermark?
It can be covered up, inpainted, or cropped out by someone determined — no burned-in text is unremovable. What it does reliably is mark ownership and make casual reuse awkward. If you need actual protection, watermark at a lower opacity and across the centre, where cropping is least attractive.
Why is the size a percentage rather than pixels?
Because you will apply the same mark to images of different dimensions. A percentage of the width keeps the text the same visual weight whether the image is a 400-pixel thumbnail or a 6000-pixel export.
Can I rotate the text diagonally?
No. The mark is drawn horizontally at one of the five anchor points, and the only styling available is the automatic shadow. Diagonal watermarking would need a different tool.
Is the original image modified?
No. The source file stays exactly as it is on disk. Applying the watermark creates a separate PNG that you download.