Decide what the pale edge is
Partly clear pixels blend with the surface behind them.
Sources for this point: W3C PNG specification.
A pale line may be an intended outline, a leftover edge, or a sign that you chose the wrong version. Do not assume the cause just because the line is easier to see on black.
| Appearance | First question |
|---|---|
| White shape follows the approved outline | Was that outline meant to be there? |
| White rectangle surrounds the whole mark | Is the outside area actually clear? |
| Thin pale rim differs from the source | At which save or export did it first appear? |
Protect real light details
- Keep an untouched source beside your working copy.
- List the white letters, small highlights and inside white shapes that must remain.
- Compare at normal size, then enlarge the edge.
- If the source already has the line, ask whether it is approved before removing it.
For example, a white star inside a colored badge may be part of the mark. Removing white everywhere could remove that star too. Mark the unwanted outside area separately.
Remove only the leftover color
In GIMP 3, Colors then Color to Alpha changes a chosen color. Its thresholds control which shades become clear. Preview carefully because wanted pale details can change too.
Sources for this point: GIMP Color to Alpha guide.
Try this on a duplicate layer. If the unwanted color also appears inside the logo, limit the edit to the affected area. Start with a small change and compare it with the original. There is no one setting that fits every rim.
- Stop if a thin letter becomes thinner.
- Undo if an inside white shape disappears.
- Return to the source if you cannot separate the rim from the artwork.
Reopen and compare the result
- Export a new PNG copy without overwriting the source.
- Reopen it and place it on a dark surface.
- Repeat on a light surface and at the real display size.
- Check the outside edge, thin strokes, inside gaps and all light details.
Judge the result at its intended size as well as enlarged. A tiny improvement at extreme zoom is not useful if the name is now harder to read. Keep the earlier copy until this check is complete.
Use a better source when needed
If each change destroys a wanted detail, stop. Ask for the original vector artwork or a larger clean image. Describe the exact edge instead of asking for the whole logo to be changed.
LogoTidy support handles project correction requests. Missing source detail may still need clarification.
Sources for this point: LogoTidy correction support.
Open LogoTidy correction support
A useful report names the file, the affected corner or letter, the surface where the rim shows, and whether it exists in the source. The task is complete when the saved edge looks right and every intended detail survives.
Sources
These sources support the points linked above. Each date shows when we checked that source.
- W3C PNG specification
PNG supports clear and partly clear pixels Checked . - GIMP Color to Alpha guide
Color to Alpha changes selected color transparency using thresholds Checked . - LogoTidy correction support
LogoTidy provides project correction support Checked .