How to Create a Custom SVG Background with Mossaik

Mossaik is a browser-based editor for generating abstract wave backgrounds and exporting them as SVG or PNG. To create one, open the editor from mossaik.app, adjust the wave, angle, color, and color mode controls until the preview looks right, then export the image and place it wherever you need it. This works for websites, phones, tablets, laptops, desktops, and presentations — the site describes all of these as intended uses.

Step 1: Open the editor

Go to mossaik.app and launch the editor from the page. The site presents the editor as the main entry point ("Launch editor, it is free →"), so you don't need to install anything or create an account based on the information available.

Expected result: you land in an interactive editor showing a wave-based background preview.

Step 2: Adjust the design controls

Mossaik's customization options are grouped around four controls:

Work through them in that order — set the wave count and angle first to get the overall shape, then tune color and color mode. Switching between gradient and color spin is the fastest way to change the feel of a design without touching the geometry.

Expected result: the preview updates as you change each option, so you can judge the result before exporting.

Step 3: Preview and export

Once the preview matches what you want, export the design. Mossaik supports two formats:

• SVG — vector output. The site notes SVG allows for high-resolution images and is lightweight, so it won't slow down a device. Use this for websites, where it scales cleanly at any size.
• PNG — raster output. Useful when you need a fixed-size image file, such as a wallpaper or a slide asset.

Expected result: you get a downloadable image file you can drop into your project.

Step 4: Use the exported background

Where you place the file depends on the target:

• Website: use the SVG as a background element. The site's stated goal here is improving visitor retention by making the page more visually engaging and reducing bounce rate.
• Mobile, tablet, laptop, desktop: set the image as a wallpaper. The site highlights that SVG's lightweight nature keeps it from slowing devices down, and that color options let you personalize each device.
• Presentations: use the image as a slide background or design element.

Common sticking points

• Choosing between SVG and PNG: if the image will be resized or displayed at multiple resolutions, SVG is the safer pick. If you need a specific pixel size or a format that a particular tool accepts, use PNG.
• Overdoing the waves: more waves and stronger color spin make a busier background. If the design will sit behind text, keep the wave count and contrast moderate so content stays readable.
• Color mode confusion: gradient blends colors smoothly across the waves; color spin cycles through colors instead. Try both on the same wave/angle setup to compare directly.

What Mossaik is not

Based on the available site content, Mossaik is a focused wave-background generator, not a full design suite. It doesn't advertise templates, layers, or text tools — the workflow is generate, customize, export. If you need a quick abstract SVG background, that's exactly the scope it covers.