YouTube Channel Watermark Size: 150x150 Logo and Subscribe Overlay Guide
YouTube video watermarks should use a square image at least 150 x 150 pixels and stay under 1 MB. Use this guide to prepare a simple logo or subscribe-style overlay before adding it in YouTube Studio.
Last checked: July 7, 2026. Based on YouTube Help. ImageSizeKit is not affiliated with YouTube or Google.
Minimum size
150 x 150 px
Shape
1:1 square
File size
Under 1 MB
Best artwork
Simple square mark
What size is a YouTube channel watermark?
Use a square watermark image at least 150 x 150 pixels and under 1 MB. A transparent PNG is often a practical export choice when the watermark is a logo or simple subscribe mark, but the official size rule is the square 150 x 150 minimum and 1 MB file limit.
The watermark appears over videos, so the design must survive at a small display size. Keep the mark simple, avoid long words, and preview it against light and dark video frames before publishing.
YouTube watermark size table
| Requirement | Meaning | How to use it |
|---|---|---|
| 150 x 150 | Minimum recommended source | Use this as the floor for a video watermark image. |
| 800 x 800 | Sharper square source | Useful when the logo has fine edges, but keep the design simple. |
| Under 1 MB | File-size limit | Compress the file without blurring the mark or text. |
| Simple square artwork | Design rule | Use a clear mark that remains visible over video. |
Watermark design checks
- Use a square canvas before export.
- Keep the file under 1 MB.
- Prefer a simple logo or subscribe mark.
- Avoid thin text and detailed backgrounds.
- Preview on light and dark video frames.
- Use the same brand mark family as your profile picture.
YouTube watermark FAQ
What size should a YouTube channel watermark be?
Use a square image at least 150 x 150 pixels and keep the file under 1 MB.
Should a YouTube watermark be a logo or subscribe button?
Use a simple brand mark, channel icon, or subscribe-style graphic. Avoid small text because the watermark appears small over the video player.
Can I use a transparent PNG for a YouTube watermark?
Yes. A transparent PNG is often the cleanest choice for a logo watermark because it can sit over video without a visible square background.
Is a YouTube watermark the same as a profile picture?
No. Both are square channel assets, but a profile picture identifies the channel across YouTube surfaces while the watermark appears on videos as a branding overlay.