✦Cleanmark

But what if it's the one that puts the Reddit logo watermark INSIDE the image itself, rather than slightly extending it down?

If the mark is printed inside the picture, use the brush path and select the mark yourself. Cleanmark's automatic edge test is for small, high-contrast marks touching a simple edge or corner. It does not promise to detect a mark in the middle of an image. Select the interior mark manually, inspect the repair, and keep the original.

Result from today's controlled run: an interior TEST mark was not sent through Auto repair. Three manual brush strokes changed the marked pixels and produced a downloadable PNG at the same 640 × 758 dimensions. The nearby-pixel repair left a visible disturbed patch, so this is a repair attempt, not a claim that covered detail was recovered.

Open the browser tool and paint the mark

The test uses a public-domain foliage photograph with an artificial TEST label. Use images you own or have permission to edit. The examples below are evidence of this run, not a guarantee for every logo, background, or source app.

Foliage photo with a TEST mark printed inside the image
Inside the image. The artificial mark is away from the outer border. It is the case that requires a manual selection.
Manual brush selection over the interior TEST mark
Manual selection. Three brush strokes cover the interior letters. The automatic edge button was not used for this mark.
Downloaded PNG after manual brush repair of the interior mark
Manual result. The letters are no longer readable, but the repair patch remains visible on the foliage.
Foliage photo with a separate appended attribution strip below it
Appended strip. A mark added below the image changes the frame layout; it is not the same problem as a logo printed into image pixels.

What the test does and does not show

The unchanged Cleanmark homepage tool accepts one PNG, JPG/JPEG, or WebP image, keeps processing in the browser, and exports a PNG. Its Auto repair button only tries a small, high-contrast edge mark on a simple background. When that shape is not found, it reports that no pixels changed and points you to the brush. For an interior logo, start with the brush instead of expecting automatic detection.

In this run, the input and downloaded output were both 640 × 758 pixels. The output changed 16,167 pixels in the selected region, and the page reported no browser errors. Those measurements describe this artificial test mark; they do not reveal the original pixels hidden under a real watermark.

Which path should you use?

If the mark touches a plain outer edge, try Auto repair and inspect the preview. If it sits inside the picture, paint over it yourself and compare the result at normal size and zoom. If it crosses a face, leaf edge, gradient, or fine texture, expect a visible repair mark and consider keeping the original or cropping only when the frame can spare it.

Question answered

An in-image Reddit logo is not an automatic edge case. In this tool, it is a manual-brush case. The browser does not upload the image, and it does not run a generative reconstruction model.