Add Watermark to Image

Why watermark images at all

A watermark answers the question every published image raises: whose is it? For photographers sharing portfolios, creators posting work to social platforms, and stores publishing product photos, a visible mark does three things — it discourages casual reuse, it makes misattributed copies traceable back to you, and it provides simple proof of ownership when a dispute appears.

It is worth being realistic about what a watermark does. It is not encryption and will not stop a determined actor with editing software; nothing short of not publishing achieves that. What it does stop is the common case: images saved and reposted without credit, because the mark travels with the copy.

The practical standard for most creators is a small, legible mark in a corner — your name, brand, or domain — at moderate opacity. Aggressive full-image diagonal watermarks protect more but ruin the viewing experience; corner marks protect enough for most real-world situations while keeping the image presentable.

Choosing watermark settings that work

Position: a bottom corner is the convention because it interferes least with the subject. Center placement protects more of the image but dominates it — reserve center marks for proofs and drafts, not finished work. Whichever corner you pick, the built-in padding keeps the text inside the frame.

Legibility beats size. A watermark too small to read deters no one; one too large deters viewers too. Five percent of the image's shorter side is a good starting size, and the subtle shadow behind the text keeps white text readable on bright areas and dark text on shadows. Opacity around 60% is the sweet spot for the same reason — present, but not shouting.

Text content: short beats long. A domain (yoursite.com) does double duty as attribution and traffic; a name works for personal brands; © plus year adds a legal signal. Avoid long sentences — they force larger, more intrusive placement to stay readable.

Local processing for images that matter

Watermarking usually happens at the moment of publishing — the last step before an image leaves your hands. That is precisely when uploading it to someone else's server is least necessary and least desirable: the tool needs only your image and the text you type, both of which your browser handles natively.

Every adjustment here — text, position, size, opacity, color — re-renders the watermarked preview instantly on your device. The final JPG is encoded locally and downloads directly. No copy of your image exists anywhere but your machine, which is the right default for unpublished and proprietary work.