Custom image generator
A clean flat image in your color and size. Nothing is uploaded.
- Your text is never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
Empty
Result updates as you type
The result appears here as soon as you type or open a file.
Settings
How it works
Choose a color
Pick any shade with the color picker for the flat fill.
Set the size
Enter the width and height in pixels for your mockup or placeholder.
Download the PNG
Save the solid image and drop it into slides, layouts or video edits.
Flat fills for layouts
Mockups, wireframes and video edits constantly need a plain block of color: a hero area waiting for photography, a lower-third background, or a thumbnail base. This tool fills the exact pixel size you ask for with one even tone.
Because the fill is perfectly uniform, the PNG stays small and crisp at any zoom. Use it as a background layer, a spacer in a collage, or a clean backdrop behind text and logos.
Match your palette exactly
Type or pick the precise hex shade from your brand guide and the whole image uses it, edge to edge with no banding or texture. Preview the tone at full size before you download.
Sizes run from tiny 64-pixel swatches for pattern tests up to 4096-pixel sheets for large screens. Keep one favorite size for your project so every placeholder matches.
Mockups without a paper trail
Placeholder colors often reveal unreleased branding: the exact launch palette, a client's signature shade, a campaign background. Painting that fill inside your browser means the shade never travels to a third-party image service.
Your device draws the rectangle, encodes the PNG and hands it to you directly. There is no account, no history page and no server copy, so early-stage design explorations stay exactly where they belong.
Questions
Is my chosen color sent to a server?
No. The solid fill is painted inside your browser. Nothing is uploaded and nothing leaves your device.
Can I use an exact brand color?
Yes. The color picker accepts any hex shade, so you can match your brand guide precisely.
What sizes are supported?
Any width and height from 64 to 4096 pixels, saved as a PNG file named custom-image.png.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
Related tools
More free tools that run on your device. No uploads