Corner Erase: remove watermarks from an image corner

Erases a chosen corner of every image in your batch — and optionally fills it back in to look natural. Built for hiding watermarks like the Gemini AI badge.

Corner Erase wipes out a corner of your image (top-left, top-right, bottom-left, or bottom-right) and optionally fills it back in so it doesn't look like there's a hole there.

It's built for one job: removing watermarks that sit in a corner. Like the Gemini AI watermark, the small "made with X" badges some AI tools add, or any consistent corner mark across a batch.

Why this step matters

Lots of free tools add a small watermark or logo to the corner of every output image — often as their way of saying "made with our tool." If you're using those images for your print-on-demand designs or product images, the watermark needs to go.

Doing it by hand in Photoshop on 200 images is hours of work. Corner Erase does the same job in one pipeline step.

⚠️ Only use this on images you have the right to remove the watermark from. Some tools allow watermark removal in their paid tiers; others don't. Check before you batch-erase.

How to use it

  1. Add Corner Erase to your pipeline.
  2. Pick which Corner has the watermark.
  3. Set the Width and Height of the area to erase (as a percentage of the image).
  4. Pick a Fill mode — how to fill the erased area so it looks natural.
  5. (Optional) Tweak the advanced fill settings if you're not getting a clean result.

The settings

Basic

SettingWhat it does
CornerWhich corner to erase: Top Left · Top Right · Bottom Left · Bottom Right. Default: Bottom Right (most AI watermarks).
Width (0–25%)How wide the erase area is, as a percentage of the whole image. Default: 10%.
Height (0–25%)Same as Width but vertical. Default: 10%.
Fill modeHow to refill the erased area so it doesn't look obviously edited. Four choices below. Default: Transparent.

Fill modes

ModeWhat it doesWhen to use
TransparentJust makes the corner see-through. No fill.When your design will be placed on a colored canvas later (the corner won't be visible).
ColorFills with the average color of nearby pixels.When the corner has a solid background color.
MirrorCopies texture from the image's edge into the corner with some variation.Most natural-looking option for textured backgrounds. Fast.
PatchSearches the rest of the image for matching texture patterns and fills with those.Highest quality. Slower. Best for complex backgrounds.

Advanced (only adjust if Fill mode isn't clean enough)

SettingWhat it doesDefault
Sample Size (1–20)How many pixels to sample from the edge for color/texture matching.5
Sample Depth (10–50)How deep into the image to look for sample pixels.30
Variation (0–10)How much to randomize the fill so it doesn't look like an obvious copy-paste.4

What to read next

  • Color Removal — for full background removal instead of just corners
  • Speckle Remover — similar pixel-cleanup concept for stray dots
  • Trim — for removing empty edges after Corner Erase

| Blend Depth (0–5) | How softly to blend the fill into the surrounding image. | 2 | | Patch Size (3–9) | Used by Patch mode — size of the texture chunks to copy. Smaller = more detail. | 5 | | Search Radius (20–100) | Used by Patch mode — how far across the image to search for matching textures. | 50 |

Tips

  • Try Transparent or Mirror first. Both are fast and work for most cases. Only switch to Patch if neither is clean enough.
  • Make the erase area slightly bigger than the watermark. A 10% × 10% box covers most corner watermarks with margin to spare. Bumping to 12-15% adds safety against partial coverage.
  • For consistent watermark batches (every image has the same watermark in the same spot), set up Corner Erase once, save it as a preset, run it on every batch.
  • Patch mode looks great but takes longer. For huge batches, prefer Mirror unless the result quality matters more than speed.
  • Combine with other tools — Corner Erase + Color Removal in the same pipeline can both clean a watermark AND remove the background in one batch run.

Things Corner Erase doesn't do

  • It can't find watermarks for you. You tell it which corner; it erases that corner. If the watermark moves between images or is in the middle of the image, this tool can't help.
  • It's not selective. It erases everything in the corner area you defined, not just the watermark. If your corner has important design elements, those go too.
  • It doesn't work on watermarks in the center or middle-edge of images. This is corner-only by design. For other areas, you'd need to use a different image editor.
  • It doesn't auto-detect what to erase. You define the area; it erases. There's no AI vision involved.