Why does my logo look blurry when I watermark large camera photos?
Because the tool scales your logo file up to the share of each photo's width you picked. On a 4000 px wide camera photo, a logo at 25% is drawn 1000 px wide; if your logo file is only 300 px wide it is stretched more than three times, and enlarging cannot invent detail that is not there. Upload a logo at least as wide as the mark needs to be, or lower the size.
The arithmetic that gives it away
Size in the tool is not in pixels; it is a share of the image width. That is great for a mark that looks consistent across photos of different sizes, but it means a bigger photo asks for a bigger logo in pixels.
A photo 1080 px wide with the logo at 25%: drawn 270 px wide. A 300 px logo is scaled down slightly and stays sharp.
A camera photo 4000 px wide at the same 25%: drawn 1000 px wide. The same logo is enlarged about 3.3 times and its edges turn soft and fuzzy.
The same photo at 10%: drawn 400 px wide, a much milder enlargement, but still an enlargement.
Why the preview did not show it
This catches a lot of people out. The preview is drawn on a reduced copy of the photo, roughly 900 px on its longest side, so the logo looks small and crisp there. The download is drawn from the original at full resolution, and that is where the stretch shows. So open the downloaded file and zoom in before you process the whole batch.
How to check your logo size, and what to do
- After uploading the logo in the Image watermark editor tool, its name and pixel dimensions appear under the upload box.
- Work out the width you need: your largest photo's width times the size share. 4000 × 25% = 1000 px.
- If your logo is smaller, ask the designer for a larger version, or export it again from its source file at a bigger width.
- If no bigger version exists, lower the size, or shrink the photos themselves first if they are larger than your store needs.
Text does not have this problem
Text is drawn from the font directly at the required size, so it stays sharp on a 1000 px photo and a 6000 px photo alike. If your logo is just a name in a plain typeface, the 'Text' type may be the cleaner choice on large camera photos. A logo in a custom lettering needs a file with enough resolution, and there is no shortcut round that.
Common questions
Is a very large logo a problem?
No. The tool scales it down to the size you need and it stays sharp. Just keep the file under 10 MB.
Can I upload an SVG logo?
No, the tool accepts PNG, WebP and JPEG. Export the SVG to a large transparent PNG and upload that.
Can a logo turn blurry on small photos too?
Only if the file is narrower than the width it is drawn at. On a 1080 px photo at 25%, a 270 px wide logo is enough.