Add a text or image watermark to a photo with a live preview. Adjust position, opacity, size and margins, then export PNG, JPEG or WebP entirely in your browser.
Your base image and watermark image are never uploaded to any server; all editing and export happen locally in your browser. No account or image history is needed. Preview and export use the same placement calculation, and actual output MIME type is checked before download.
Yes. Text supports one line of up to 120 characters, three system font families, color, bold and a black outline. Image watermarks support static PNG, JPEG and WebP, including transparent PNG logos. Choose one watermark type at a time; tiled or multiple watermarks are not included in this version.
Choose from nine positions. Margin is a percentage of the base image’s shorter side. Text size is also a percentage of that shorter side, and long text shrinks to fit. Logo width is a percentage of the base image width, with its aspect ratio preserved and size reduced further when needed to fit. Enlarging a small logo can look soft.
Base images can be up to 20 MiB and logos up to 10 MiB. Both must fit within 16 megapixels and 8,192 pixels per side and decode in your browser. Static PNG, JPEG and WebP are supported. SVG, GIF, AVIF, HEIC and detected animated PNG/WebP are not supported. Use Image Resizer first for larger dimensions.
Export keeps the browser-oriented base image dimensions and creates a new raster file. Original metadata, encoded bytes and exact color-profile behavior are not preserved. The preview is scaled for the screen and shows the composition before lossy export compression. System fonts and glyph appearance can differ between devices.
Opacity applies only to the watermark, including an image logo’s own transparency and any text outline. PNG and WebP retain transparency where supported. JPEG fills transparent areas with the selected background color. Quality affects JPEG and WebP; PNG ignores it.
No. A watermark adds a visible mark but can be cropped, edited or removed. It is not encryption, ownership verification or copy protection.
Changes discard previous downloads and late export results. Encoding has a 15-second response limit. Clear and leaving the page release application-held bitmaps, previews and object URLs. Your input images and text are not stored in browser history by this tool.
