100% Free In-browser AI Inpainting

Remove Watermark Free Online

Brush over any watermark, logo, or text overlay and let the AI inpainting engine reconstruct the background. Works entirely in your browser — your images never leave your device.

Drop an image here or click to browse

JPG, PNG, WebP • Brush over the watermark to remove it

Accepts: .JPG .PNG .WEBP
Output: .JPG

No image? Try one of these:

Never uploaded·How to use this tool
Related tools: Watermark Image Photo Editor Remove Background Upscale Image

How it works

Remove watermarks in 3 steps

1

Upload your image

Drop a JPG, PNG, or WebP image onto the tool, or click to browse. You can also try one of the built-in sample images.

2

Brush over the watermark

Use the brush tool to paint over the watermark, text overlay, or logo. Adjust brush size as needed. Or use Auto Detect to mark it automatically.

3

Download the result

Click "Remove Watermark" and the AI inpainting engine will reconstruct the background. Use the before/after slider to compare, then download.

FAQ

Frequently asked questions

The tool uses canvas-based inpainting: you paint a mask over the watermark region, and the algorithm uses inverse distance weighted interpolation from surrounding pixels to reconstruct the background. Multiple passes expand outward to fill larger areas smoothly. It runs entirely in your browser using the Canvas API — no server processing required.

Results depend on the complexity of the background underneath the watermark. The tool works best when the watermark sits on a relatively uniform or smoothly varying background (gradients, skies, walls). Semi-transparent watermarks and simple text overlays typically remove cleanly. Watermarks over highly detailed textures may show some artefacts.

No. The entire process runs in your browser using the HTML5 Canvas API. Your image data never leaves your device. There is no server, no account, no storage — complete privacy by design.

Auto Detect scans the image for high-contrast text-like patterns and semi-transparent overlays using pixel luminance analysis. It then automatically marks those regions as the mask. You can adjust the sensitivity slider and run detection multiple times. You can also refine the auto-detected mask by manually painting additional areas with the brush before running the removal.

The result is downloaded as a high-quality JPG file. If you need to preserve transparency (PNG), open the downloaded JPG in another tool — note that inpainting fills the mask region with solid colour, so transparency in that area is lost anyway.

Everything you need to know about removing watermarks

Watermarks are used to protect intellectual property, but there are many legitimate reasons to remove them — removing your own branding from a draft, cleaning up stock-photo previews you've licensed, or recovering an old photo that had text burned in. JustDownSize's watermark remover uses canvas inpainting to reconstruct the image background without needing a server or any external AI API.

Why use JustDownSize for watermark removal?

Unlike server-based tools that upload your files to remote servers, our tool runs entirely client-side. Processing is instant, there are no file size limits imposed by server constraints, and your images remain completely private. The inpainting algorithm uses multiple-pass inverse distance weighted interpolation — a robust technique that samples surrounding pixels and blends them smoothly into the masked region.

Tips for the best results

Paint the mask slightly larger than the watermark itself so the edges are fully covered. For large watermarks, use a bigger brush size. If the auto detect mode marks too much or too little, adjust the sensitivity slider and re-run. After removal, use the before/after slider to check the result before downloading.