Stamp a diagonal, semi-transparent text watermark onto images. 100% free, no sign-up — your file never leaves this browser tab.
Image Watermark lets you watermark an image entirely inside your browser, with no software to install and no account to create. Like every tool on Techsinghge Smart Tools, it's built around adding a finishing touch to a document — text, numbers, images, or metadata, and it works the same way whether you're on a laptop, a Chromebook, or a phone.
Under the hood, Image Watermark takes one or more images and custom text and hands back images with a semi-transparent text watermark. Your file is loaded directly into this page's memory using JavaScript — nothing is transmitted to a server, which means there's no upload wait, no file-size cap tied to a paid plan, and no copy of your document left sitting on someone else's storage once you're done.
Protecting photography portfolio images before sharing online is one of the most common reasons people reach for this tool, but it works just as well for marking product photos with a store name before posting. If you need a related step before or after this one, check the related tools further down the page — every tool on this site is designed to slot into the same drag-and-drop workflow.
No installs, no accounts — just your browser doing the work.
Scroll up (or tap “Use Image Watermark now”) to load the tool instantly — no account or install needed.
Drag and drop one or more images and custom text into the drop zone below, or click it to browse your device.
Adjust whatever settings this tool offers so the result comes out exactly how you want it — sensible defaults are already selected.
Click Run, then download images with a semi-transparent text watermark straight to your device — it's generated locally and ready in seconds.
Watermark text is angled and translucent so it protects the image without hiding it.
Apply the same watermark to multiple images in one pass and download them as a ZIP.
Your one or more images and custom text stays on this device the whole time — nothing is uploaded, logged, or stored on a server.
Processing happens right in this browser tab, so there's no upload progress bar, no server queue, and no processing fee.
Because Image Watermark runs locally, teams handling sensitive paperwork — legal, HR, healthcare admin, finance — can use it without the compliance questions that come with uploading documents to a third-party server. And if you only need it for a single one-off task, it's just as useful with zero setup and nothing to remember to delete afterwards.
Yes, adjust the transparency so the watermark is as subtle or as prominent as you need.
Yes, the watermark is layered over the image content while preserving transparent areas where possible.
Yes — completely free, with no hidden page limits, no sign-up, and no watermark added to images with a semi-transparent text watermark.
No. Image Watermark runs entirely in your browser using JavaScript libraries like pdf-lib and pdf.js. Your one or more images and custom text never leaves this device.
Yes, Image Watermark works in any modern mobile or desktop browser — there's no app to install and no separate mobile version to download.