Watermark Image Online — Text, Position & Tiling
Stamp your name or brand across an image: pick a position or tile it, set the size, opacity and colour, and download — all on your device.
or drag an image here
Choose an image to begin.
What this tool does
It draws text over an image — your name, a copyright line, a brand — and lets you download the result. You control where the mark goes, how large it is relative to the image, how see-through it is and what colour it takes, with a live preview so you can judge before saving. The image keeps its original pixel dimensions; only the watermark is added.
Placing the mark so it survives
The position matters as much as the text. A mark in the dead centre or repeated across the image is very hard to crop away, which suits a picture you expect to be reposted without credit. A single corner mark is subtler and unobtrusive, which is right when the goal is attribution rather than protection. Semi-transparent white or black reads on most photographs without covering what is underneath; pick whichever is opposite to that corner's tone.
Text, size and readability
The size is set as a percentage of the image's shorter side, so the same setting looks consistent whether the photo is 800 or 6000 pixels wide. Around 4–6% is a discreet credit; 10% or more is a deliberate overlay. Keep the opacity above about 0.5 for legibility over busy backgrounds, and remember that a mark too faint to see is also too faint to credit you.
Nothing leaves your device
Watermarking is often the last step before sharing an image you have not published yet — a proof, a draft design, a personal photograph. This tool never uploads it: your browser decodes the file, draws the watermark on a canvas and hands the result straight back for download. No server sees the image, and closing the tab leaves nothing behind.
Frequently asked questions
What is a watermark for?
A watermark marks an image as yours: it puts your name, logo or a copyright line over the picture so a copy still carries your attribution. It is used most on photos and designs shared publicly — portfolios, social posts, proofs sent to a client before payment — where you want the image visible but credited.
How does the tool place the watermark?
You choose one of nine positions (a corner, an edge centre or the middle), how transparent it is, its size as a percentage of the image, and a colour. The preview updates as you change them, and the watermark is drawn onto a canvas copy at full resolution when you download — nothing about the original file is altered.
Should I tile the watermark across the image?
Tiling repeats a faint watermark over the whole picture and is much harder to crop out than a single corner mark — the right choice for an image you expect to be reposted. A single corner or edge mark is subtler and is what you want when the goal is credit rather than protection.
Does watermarking reduce quality?
Only in the same way any re-save does. The image is drawn to a canvas at its original pixel size and re-encoded; if you keep PNG the pixels are lossless, and if you choose JPEG the quality slider controls the trade-off. The pixel dimensions are never changed, so the watermark does not shrink your image.
Is my image uploaded?
No. The image is opened by your browser, watermarked on a canvas and downloaded from the same page. Nothing is sent to a server, so you can watermark a private or client photograph without it leaving your machine.
Why does my transparent PNG watermark not show?
This tool draws a text watermark, or tiles text — it does not yet composite a second image such as a logo PNG. Use the text field with your brand name, and set the size and opacity to taste.
Go deeper
Longer explanations of the problems this tool solves:
Sources
- MDN Web Docs — CanvasRenderingContext2D: fillText, globalAlpha and measureText.
Everything runs in your browser — your file never leaves your device.