Drop files here
About Watermark Image — Free Online Tool
Watermark Image draws a text mark or a logo you supply over a picture, at a position, size, opacity and rotation you control, or tiled across the whole frame.
The mark is composited into the pixels at a canvas alpha you set, so it survives re-saving and screenshots rather than sitting in a layer that can be switched off — though it is a deterrent and not protection, since it can still be cropped or painted out. Text is drawn with a dark shadow behind it so it holds up over a light background, and its default size tracks the image width at 4.5 per cent rather than being a fixed point size that would vanish on a large photo. A logo is scaled as a percentage of the image width and keeps its own proportions. Tiled text is laid out on a 30 degree slant, which is far harder to crop away than a single corner mark.
The photo and the logo file both stay in your browser, and neither is uploaded.
Marking proofs before they go to a client, putting a studio name across sample photos, stamping CONFIDENTIAL over a document scan, and tiling a mark over images you are publishing.
Also known as: add copyright · watermark photo · brand pictures · logo watermark · image watermark
When to use it
Discourages unauthorized theft, republishing, and protects intellectual property.
How it works
Composites transparent text layers or secondary image buffers onto canvas.
Tiled vs Corner Watermarks
Use corner stamps for clean branding, or full tiled patterns for proofing.
How to Use Watermark Image in 4 Easy Steps
Follow this simple guide to process your files in seconds directly inside your browser tab.
Select or Drop Your JPG/JPEG/PNG
Drag and drop your JPG/JPEG/PNG directly into the Watermark Image workspace above or click 'Choose files'. You can process up to 10 files in a single run.
Configure Your Preferences
Adjust the available optimization sliders, target formats, or custom options. Discourages unauthorized theft, republishing, and protects intellectual property.
Instant In-Browser Execution
The client-side engine executes Watermark Image locally on your device hardware with zero server latency and 100% private in-memory sandboxing.
Preview & Download JPG
Inspect the processed file, compare file size savings or output quality, and click Download to save the finished JPG file directly to your disk.
Why Use Watermark Image on ShortTrick
Engineered for maximum speed, strict privacy, and frictionless digital productivity.
100% Private & Local
Files processed with Watermark Image never leave your computer or phone. Zero cloud uploads, zero tracking, and zero risk.
Blazing Fast Engine
Powered by compiled WebAssembly code running directly in your browser with sub-second execution for Watermark Image.
No Paywall or Account Required
Watermark Image is completely free with no hidden charges, watermarks, email signups, or artificial daily limits.
High-Fidelity Quality
Advanced algorithms preserve crisp vector text, clear colors, and structural layout integrity.
Generous 50 MB Size Limit
Handle files up to 50 MB and process up to 10 files in convenient batches with Watermark Image.
Cross-Device Compatibility
Runs seamlessly in modern browsers on Windows, macOS, Linux, iOS (iPhone/iPad), and Android.
Supported Formats & Limits
Designed for high performance with browser-side memory guarantees.
50 MB
10
Frequently Asked Questions About Watermark Image
Common questions regarding Watermark Image, data privacy, file format compatibility, and usage limits.
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