Is this watermark remover completely free?

Yes. There is no signup, no account, no subscription, and no hidden fee. All features are free to use.

Are my images uploaded to a server?

No. All processing happens entirely inside your browser using the HTML5 Canvas API. Your images are never sent to any server.

What types of watermarks can it remove?

It works best on text watermarks, transparent logo overlays, and corner branding on plain or gradient backgrounds. Watermarks that cover complex photographic content (faces, detailed scenery) are harder to reconstruct naturally.

Which removal method should I choose?

Use Smart Fill for most cases — it samples surrounding pixels to reconstruct the background. Use Blur & Blend for semi-transparent overlays or complex backgrounds where Smart Fill leaves artefacts.

Can I remove multiple watermarks from one image?

Yes. After processing, the result image becomes the new working image. You can paint a new selection over a second watermark and process again.

Why does the result look slightly blurry near the edges?

The inpainting algorithm blends filled pixels with their neighbours to avoid hard edges. Tight, accurate selections produce the sharpest results. Use a small brush size to trace the exact watermark boundary.

What image formats are supported?

You can upload JPG, PNG, WebP, and BMP files. The result is always downloaded as a PNG to preserve the quality of processed pixels.

Does it work on mobile?

Yes. The tool is touch-friendly and works on modern mobile browsers. For detailed watermarks, a larger screen makes selection easier.

Watermark Remover

Paint over watermarks and let content-aware fill reconstruct the background — free, private, no uploads.

Last updated: April 2026

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Drop your image here, or click to upload

JPG, PNG, WebP, BMP — up to 30 MB

Choose image

brush

Paint selection

Brush or rectangle over the watermark

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Smart Fill

Content-aware reconstruction from surrounding pixels

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Private & free

Your image never leaves your browser

What it does

Content-aware Smart Fill

Samples pixels in a 30px radius around the masked area and reconstructs the background using distance-weighted averaging across 3 iterative passes. Produces smooth, natural-looking results on uniform and gradient backgrounds.

Blur & Blend method

Applies a 15px Gaussian blur within the selected region and feathers edges for a seamless transition. Works best on translucent watermarks and complex textured backgrounds.

Brush & rectangle selection

Paint freehand over any watermark shape with an adjustable brush, or draw a precise rectangle for clean-edged selections. A red overlay gives instant visual feedback.

Before/after comparison slider

An interactive slider lets you reveal the original and processed image side by side at full resolution so you can evaluate the result before downloading.

Web Worker processing

Heavy inpainting runs in a background Web Worker thread, keeping the UI completely responsive during processing of large images.

100% private, zero uploads

All processing happens inside your browser using the Canvas API. Your image data never leaves your device and is never sent to any server.

How to use Watermark Remover

1
Upload your image
Drag and drop or click to upload a JPG, PNG, or WebP image. The image loads directly in your browser — nothing is sent to any server.
2
Select the watermark area
Choose the Brush or Rectangle tool, then paint over the watermark. A red overlay shows the selected area. Adjust brush size as needed.
3
Choose a removal method
Smart Fill reconstructs the background by sampling surrounding pixels — best for text on plain or gradient backgrounds. Blur & Blend applies a smooth blur, ideal for translucent overlays.
4
Process the image
Click 'Remove Watermark'. Processing runs in a background thread so the page stays responsive. Large images may take a few seconds.
5
Download your result
Use the before/after slider to review the result, then click Download to save your watermark-free image as a PNG.

When to use this

Stock photo text overlays

Purchased a stock photo that still shows a preview watermark? Paint over the text with the brush tool and Smart Fill will reconstruct the background.

App screenshot branding

Screenshot contains a promotional overlay or corner logo? Use the rectangle tool to select it precisely and remove it cleanly.

Semi-transparent logo overlays

Images with a faint, translucent watermark across the centre respond well to Blur & Blend, which smooths out the overlay without leaving hard edges.

Social media repurposing

Removing credit text or platform branding from images you own before reposting across different channels.

Document cleanup

Scanned documents with 'DRAFT' or 'CONFIDENTIAL' text stamps can be cleaned up using the rectangle selection and Smart Fill.

Common errors & fixes

Filled area looks blurry or smeared: Reduce the feather effect by ensuring your selection tightly follows the watermark boundary. For sharp-edged text watermarks, use the rectangle tool rather than a large brush.
Hard visible edge around filled region: The surrounding content may have strong colour variation. Try the Blur & Blend method for a softer transition, or re-select with a slightly expanded area to capture more context.
Processing takes very long: Smart Fill scales with image resolution. For images above 3000px wide, the algorithm may take 10–20 seconds. The progress bar shows live status. Use a smaller brush selection if possible.
Canvas appears blank after upload: The image may be in a format the browser canvas cannot decode (e.g., HEIC). Convert to JPG or PNG first using the HEIC to JPG tool, then re-upload.
Watermark still visible after processing: The watermark may cover complex content (faces, detailed patterns) that the algorithm cannot perfectly reconstruct. Try Smart Fill with a tight selection, or use multiple small brush strokes rather than one large selection.

Technical details

Inpainting algorithm	Iterative diffusion — 3-pass distance-weighted pixel averaging within a 30px sample radius
Blur & Blend kernel	15px Gaussian blur with 5px edge feathering via alpha compositing
Processing thread	Web Worker with inlined Blob URL (avoids Turbopack static resolution issues)
Fallback	Main-thread canvas processing for browsers without OffscreenCanvas support (Safari < 16.4)
Supported input formats	JPG, PNG, WebP, BMP — any format the browser's createImageBitmap() can decode
Output format	PNG (lossless, preserves all processed pixel data)
Max recommended resolution	4000×4000px — larger images work but Smart Fill may take 30+ seconds
Processing location	100% client-side — image data never leaves the browser

How content-aware fill works without AI

Modern AI watermark removers use deep neural networks trained on millions of images to hallucinate plausible replacement content. This tool takes a different approach rooted in classical image processing: it looks at what is actually in your image.

For each masked pixel, the algorithm samples non-masked pixels within a 30-pixel radius and computes a weighted average — closer pixels contribute more (weight = 1/d²). It then performs three iterative passes, each refining the previous result. On uniform backgrounds, gradients, and simple textures, this produces nearly seamless results without any AI model, API call, or uploaded data. The tradeoff is that it cannot hallucinate complex content (a building facade, a human face) the way a neural network can — but for the most common watermark types on stock photos and screenshots, the classical approach works reliably.

Why Web Workers matter for in-browser image processing

JavaScript runs on the browser's main thread by default — the same thread that handles layout, rendering, and user interaction. Running a pixel-level algorithm on a 4-megapixel image on the main thread would freeze the entire browser tab for several seconds, making the experience feel broken.

Web Workers run JavaScript on a separate background thread. This tool's inpainting algorithm runs in a Worker so the page stays fully responsive during processing — you can still scroll, switch tools, and see the progress bar update in real time. The Worker communicates via message passing: the main thread transfers the image pixel buffer and mask data to the Worker as Transferable ArrayBuffers (zero-copy), receives the result buffer back, and redraws the canvas. The Worker script is inlined as a Blob URL to avoid Turbopack's static file resolution requirements in Next.js 16.

Frequently Asked Questions

Is this watermark remover completely free?: Yes. There is no signup, no account, no subscription, and no hidden fee. All features are free to use.
Are my images uploaded to a server?: No. All processing happens entirely inside your browser using the HTML5 Canvas API. Your images are never sent to any server.
What types of watermarks can it remove?: It works best on text watermarks, transparent logo overlays, and corner branding on plain or gradient backgrounds. Watermarks that cover complex photographic content (faces, detailed scenery) are harder to reconstruct naturally.
Which removal method should I choose?: Use Smart Fill for most cases — it samples surrounding pixels to reconstruct the background. Use Blur & Blend for semi-transparent overlays or complex backgrounds where Smart Fill leaves artefacts.
Can I remove multiple watermarks from one image?: Yes. After processing, the result image becomes the new working image. You can paint a new selection over a second watermark and process again.
Why does the result look slightly blurry near the edges?: The inpainting algorithm blends filled pixels with their neighbours to avoid hard edges. Tight, accurate selections produce the sharpest results. Use a small brush size to trace the exact watermark boundary.
What image formats are supported?: You can upload JPG, PNG, WebP, and BMP files. The result is always downloaded as a PNG to preserve the quality of processed pixels.
Does it work on mobile?: Yes. The tool is touch-friendly and works on modern mobile browsers. For detailed watermarks, a larger screen makes selection easier.