Image Watermark

Adds a text watermark to an image, with control over position, size and opacity. Useful for marking proofs, claiming authorship on work you are sharing, and labelling images before they leave your hands.

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How to use Image Watermark

  1. Choose your image.
  2. Enter the watermark text — a name, a URL, or PROOF.
  3. Set position, size and opacity, and check it reads against the actual image.
  4. Download the watermarked copy; the original is untouched.
  5. A corner watermark is easily cropped; a central one is not, but dominates the image.
  6. Keep the unmarked original — the watermark cannot be removed from the download here.
  7. Everything runs in your browser; client work is not uploaded anywhere.

What a watermark is for, and what it cannot do

It attributes and it deters. A visible mark makes casual reuse obviously improper and keeps your name attached as an image travels. It does not protect the image: a determined person can crop it out, clone over it, or these days remove it with generative editing in seconds. Treat it as a signature rather than a lock, and do not let it substitute for sending low-resolution proofs and holding the full-quality file back until you are paid.

Placement, and the crop problem

A mark in a corner is unobtrusive and trivially cropped away. A mark across the centre survives cropping and ruins the image, which is exactly right for a proof and wrong for anything you want seen. The usual compromise for portfolio work is a discreet mark in the lower third, sized so that removing it would visibly damage the composition. For proofs sent to a client before payment, a large diagonal at low opacity across the whole frame is the honest choice — they can judge the picture and cannot use it.

Opacity and legibility

Around 30–50% works for a signature-style mark: readable without competing with the image. The difficulty is that a single colour cannot read on both light and dark areas of a photograph, which is why white text with a subtle shadow, or a mark placed in a deliberately chosen flat area, is more reliable than picking a colour and hoping. Check the result at the size people will actually view it, not at full resolution.

Frequently asked questions

Can I repeat the watermark across the whole image?
Yes. Tiled across the image repeats the text at an angle over the whole picture, and Large diagonal draws one big mark from corner to corner, as used on proofs. The other placements put a single mark in a corner, in the centre, or centred along the top or bottom.
Can I use my logo as the watermark?
This tool adds text only, such as your name, a copyright line or a word like PROOF, with your choice of font, size, colour and opacity. For a logo, use the Image Logo tool, which places, sizes and fades an image on a photo.
Is my data secure?
Absolutely. This tool runs 100% locally in your browser. Your files are never uploaded to any server.
Can a watermark be removed from an image?
Yes, with increasing ease — cropping handles a corner mark, cloning handles a small one, and generative tools handle most of the rest. A watermark deters casual reuse and asserts authorship; it does not prevent theft. Withholding the high-resolution file is the protection that works.
What opacity should I use?
Around 30–50% for a signature-style mark — legible without fighting the image. Proofs meant to be unusable want something larger and more central rather than more opaque.
Does watermarking reduce image quality?
The image is re-encoded on save, so a JPEG output adds a compression generation. The watermark itself only affects the pixels it covers. Keep the original and watermark from it each time rather than watermarking an already-watermarked copy.

Written by the ToolsRift team · Last updated

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