Free online image watermark: text watermark with 9-position placement, size/opacity/color controls, and anti-theft tiling mode. Photos never leave your device.
TL;DR: Free online image watermark: 9-position text watermarks plus anti-theft tiling, fully local processing.
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
Next steps
Usage Guide
Credit on photography, anti-theft marks on product images, classification stamps on internal screenshots — watermarking is the last step before an image leaves your hands. Text watermarks with 9-position placement, size/opacity/color controls, and anti-theft tiling. Canvas rendering, fully local.
1. How to use
- Drop an image and type the watermark text (a byline, a URL, or "INTERNAL").
- Pick a position or enable tiling; tune size, opacity, and color with live preview.
- Download the PNG; run it through the image compressor before publishing.
2. Three field-tested anti-theft practices
- Tiling beats single marks: full-image -30° tiling survives crops and flips; a corner mark vanishes with one crop.
- Over the subject beats empty space: watermarks across a face or product cost far more to remove than marks on plain background, where a clone stamp erases them in seconds.
- Opacity 30-50% is the sweet spot: lower is invisible, higher ruins the image — find the setting that reads without shouting.
3. Quality tradeoffs
The watermark itself does not degrade quality (canvas renders at original resolution), but PNG export can grow the file — compressing before publishing is the standard finishing step. The other dial is font size: larger watermarks resist removal but dominate the image. Attribution (small corner text at 60-80% opacity) and anti-theft (tiled at 30-40%) are different configurations — do not force one preset to serve both jobs.
FAQ
Completely free, no signup. Watermarks render locally with canvas — the photos being marked (often private or commercial work) never leave your device.
Enable Tiling: the text repeats across the whole image at a -30° angle, surviving crops and flips. For single placement, put it over the subject rather than a corner — removal costs more.
Balance with the opacity slider: 30-50% blends protection and aesthetics; pure attribution (a corner byline) works at 60-80% with a small font. The preview updates live.
The current version supports text watermarks including tiling; logo overlays are on the roadmap.
Related Tools
Related Articles
Image Formats Explained: JPG, PNG, WebP, HEIC, and SVG — Which One, When, and How to Convert
A practical guide to choosing image formats: what JPG, PNG, WebP, HEIC and SVG are actually good at, when compression hurts, why transparency changes everything, and how to convert between formats without losing quality.
Online Base64 to Image Converter: Decode Base64 Strings to Image Files
Learn how to convert Base64 encoded strings back to image files. Understand Base64 decoding principles, common image MIME types, and real-world Web development use cases.
docker pull access denied: 5 Reasons Image Pulls Get Rejected (and the Fix)
docker pull fails with pull access denied for xxx, repository does not exist or may require docker login? Covers misspelled image names, missing tags, private registry login, Docker Hub rate limits, and registry mirrors for mainland China networks — with a one-minute triage flow.