Toolminex
Image Tools

Image Watermark

Add a custom text watermark to any image. Control position, font size, color, and opacity. Private, nothing leaves your browser.

Preview

Drop an image here

or click to browse: JPG, PNG, WebP

Settings

#FFFFFF

How to add a text watermark to an image

Type your text, set its size, colour, opacity and position, and download the watermarked image.

  1. 01

    Load the image and type your text

    The text starts as "© My Brand". Replace it with your name, site or a short notice such as "Sample" or "Draft".

  2. 02

    Set size, colour, opacity and padding

    Font size runs from 12 to 120 px, opacity from 10 to 100%, and padding from the edge from 0 to 80 px. White text at 70% opacity starts as the default, with a soft shadow so it reads on light and dark areas.

  3. 03

    Pick one of seven positions

    Corners, top and bottom centre, or the middle. The preview updates as you change anything.

  4. 04

    Download in the format you need

    PNG input stays PNG and WebP stays WebP; other images save as JPEG at 92% quality. The image keeps its original resolution.

Font size is in image pixels

The watermark is drawn onto the image at its full resolution, and the font size is measured in that image's own pixels. So the same setting looks very different on different photos. On a 1080 px wide social image, 36 px text is about a thirtieth of the width. On a 4032 px phone photo, the same 36 px is under 1% of the width and practically invisible once the photo is viewed on a phone.

Image widthFont sizeText height as share of widthHow it looks
1080 px (Instagram post)36 px3.3% of the widthClear but discreet
1920 px (full-HD)60 px3.1%Discreet
4032 px (12 MP phone photo)36 px0.9%Barely visible
4032 px (12 MP phone photo)120 px (maximum)3.0%Discreet

If even 120 px looks small on a large photo, resize the photo first with the Image Resizer, for example to 2,000 px wide, which is plenty for the web. Then the size slider covers a sensible range.

Choosing placement and opacity

A corner watermark at 50 to 70% opacity is the usual choice for portfolios and product photos. It credits the image without spoiling it, though it's also the easiest to crop off. A centre watermark at 25 to 40% is much harder to remove and suits proofs you send to a client before they pay, at the cost of getting in the way of the picture.

Pick a colour that contrasts with the area underneath: white over dark backgrounds, black or a dark brand colour over light ones. The built-in shadow helps text stay readable over busy areas.

Why people watermark images

Proofs for a photography client

Put "Proof" across the centre at low opacity, send the watermarked set, and deliver clean files once they've chosen.

Crediting images you post online

A small © name in a corner helps people find you when an image is reshared without credit.

Marking documents as drafts

Stamp "Draft" or "Confidential" on a screenshot or a photographed page before sharing it.

Limits worth knowing

  • Text only, one line, in a bold sans-serif font. There's no logo upload or tiled pattern across the whole image.
  • One image at a time.
  • A corner watermark can be cropped out easily. If protection matters more than looks, use the centre position.
  • Metadata such as EXIF and location isn't kept in the downloaded file.

Frequently asked questions

No. The text is drawn onto the image in your browser and the result is saved straight to your device.
A determined person with editing software usually can, especially from a corner on a plain background. A watermark discourages casual copying and credits you; it isn't strong protection.
PNG output is lossless. JPEG and WebP are re-saved at 92% quality, which is hard to tell apart from the original on most photos.
Yes, type or paste it into the text box. On a Mac, Option+G types ©; on Windows, Alt+0169.
Not in one go. The settings stay in place while you load the next image, so you can do a small set one after another.

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