Fix finder
| What you see | Likely cause | Fix |
|---|---|---|
| Faint light star | Removal slightly too weak (often heavy JPEG compression) | Raise "Removal strength" by 5–10% |
| Faint dark star | Removal slightly too strong | Lower "Removal strength" by 5–10% |
| Thin outline only | Compressed edge pixels | Raise "Edge cleanup" |
| Star still clearly visible | Image was resized or cropped, so the mark was not found | Tap "Select the mark" and tap the sparkle |
| Small leftover spot | Unusual background or edit | Use "Brush fix" and paint over it |
Why it happens
The remover reverses the blend that added the sparkle. That works best on the original file. When an image is saved again as a JPEG, shrunk, sharpened or screenshotted, the pixels around the mark change a little, so the reversal can overshoot or undershoot slightly.
Fix step by step
- Open the image remover and add your image.
- Turn on "Zoom to corner" to see the mark area up close.
- Move "Removal strength" until the star disappears.
- If an outline remains, raise "Edge cleanup".
- For anything left, tap "Brush fix", paint over the spot and tap "Apply fix". It rebuilds the area using nearby texture.
Everything runs in your browser.
Prevent it next time
- Use the original download from Gemini, not a screenshot. See screenshot vs original.
- Remove the watermark before resizing, filtering or compressing the image.
- Save the result as PNG if you plan to edit it further.
The three causes, in order of likelihood
A faint trace after removal nearly always comes down to one of three things, and they have different fixes, so it is worth telling them apart before reaching for a slider.
1. The file was compressed before you ever got to it. By far the most common. JPEG compression smears the mark's edges into the picture around it, so there is no longer a clean boundary to reverse. The blend maths assumes a sharp mark; it gets a soft one, and leaves a halo.
2. The size was not quite right. If the image was resized, the mark is no longer at a size the tool can assume, and a small error in assumed size leaves a faint outline exactly where the edges did not line up.
3. The mark is a variant the automatic pass matched loosely. Gemini has used more than one version of the sparkle — an older brighter one close to the corner, a newer fainter one placed further in. A near-match removes most of it and leaves the difference.
Symptom, cause, fix
| What is left | Most likely cause | What fixes it |
|---|---|---|
| A faint white ghost of the star | Removal strength slightly low | Raise removal strength a few percent with Zoom to corner on |
| A dark smudge or grey patch | Removal strength too high | Lower it — you are over-subtracting |
| A thin outline round where it was | Size slightly off, usually a resized image | Tap Select the mark and tap the sparkle |
| A soft halo spreading outwards | JPEG compression before removal | Use the original download; otherwise Brush fix |
| Most gone, one corner of the star left | Variant mismatch | Tap the mark to measure it, or brush the remainder |
| A visible rectangle | A different tool painted over it earlier | Start again from the untouched original |
Using Zoom to corner properly
Most people adjust the slider while looking at the whole image, where a faint trace is invisible at that scale, and then discover it later at full size. Turn on Zoom to corner first. It blows up the area the mark sat in so you are judging the thing you are actually trying to fix.
Then move the removal strength in small steps rather than dragging it across. The useful range is usually within ten percent either side of the default. Watch for the turn: as you raise it the white ghost fades, and if you go too far a grey shadow appears in its place. The right setting is the last one before the grey appears.
The edge-smoothing control is for a different symptom — a thin hard line round the repair rather than a trace of the star itself. Reach for it only if you can see that line.
When the brush is the right answer
Sliders fix the cases where the maths was nearly right. When it was not close — a heavily compressed image, a mark from a tool other than Gemini, a logo someone else added — no slider setting will help, and the honest move is to stop adjusting and rebuild the area instead.
Open Brush fix. You have two ways to mark the area: paint over it with the brush for an awkward shape, or choose Drag a box and draw a box round it, which is quicker and usually neater. Then tap Erase it and the marked area is rebuilt from the picture around it.
One thing to know about this path: it does not recover the original pixels, it invents plausible ones from the surroundings. Over a sky, a wall or a blurred background that is indistinguishable from the real thing. Over fine detail — text, a face, foliage — keep the box as tight as you can, because the less you ask it to invent the better it looks.
Checking the result before you publish
A trace that is invisible in a preview can be obvious in a printed poster or on someone else's brighter screen. Three quick checks:
- View at full size, not fitted to the window. Traces hide at small scale.
- Raise your screen brightness, or tilt a laptop screen. Faint light ghosts show up most at high brightness and off angles.
- Export as PNG if you are going to edit further. Each JPEG re-save adds compression, and compression is what makes a faint trace look worse over time.
If you are working through a batch, check one image carefully and settle the slider on that, then run the rest — images from the same source usually need the same setting.
FAQ
Why is there a dark star after removal?
The removal was slightly too strong for that image. Lower "Removal strength" a little.
Why is a light star still visible?
Heavy compression weakened the match. Raise "Removal strength" a little.
Does Brush fix blur the image?
No. It rebuilds the painted spot using real texture from around it.
Will fixing it lower the quality?
No. Only the small mark area is changed.
Why is there a grey patch instead of a faint star now?
The removal strength is too high and it is over-subtracting. Lower it a few percent with Zoom to corner turned on.
Does the brush recover the original pixels?
No. It rebuilds the area from the picture around it. Over a sky or a blurred background that is invisible; over fine detail, keep the box tight.
Why does the same setting not work on every image?
Because the setting compensates for how the file was compressed and resized, which differs per image. Images from the same source usually behave the same way.
Should I save as PNG or JPEG?
PNG if you will edit the image again, since repeated JPEG saves add compression that makes any remaining trace more visible. JPEG is fine for a final upload.