Tileable Image Previewer - Seamless Texture Checker

Tileable Image Previewer: A Seamless Texture Checker

Tileable Image Previewer is a seamless texture checker that repeats your image in a grid so you can instantly see whether it tiles without visible seams. Upload a texture or pattern and the preview shows it side by side and top to bottom, making misaligned edges and color jumps easy to spot.

Use it to verify textures for game assets, CSS background patterns, wallpaper designs, or any repeating image. Adjust the grid, add spacing, flip alternating tiles with mirror modes, and highlight the seam lines to find exactly where the tiles meet.

Private by design: your image is read and tiled entirely in your browser using a canvas. Nothing is ever uploaded to a server, so your textures stay on your device.

Who It's For

Game developers

Test textures for 3D models, terrain, and surfaces before applying them in an engine.

Web designers

Check how a CSS background pattern repeats across a page or section.

Graphic designers

Verify seamless patterns for print and digital media before exporting.

Wallpaper creators

Preview how a design repeats across large surfaces at different densities.

How to Check if an Image Tiles

1

Upload your image

Click the upload zone or drag and drop a file. PNG, JPG, SVG, and WebP are supported. The image appears tiled in a 3×3 grid right away.

2

Set the grid

Use the Columns and Rows sliders (2 to 10 each) to see more or fewer repetitions, from a 2×2 up to a 10×10 grid.

3

Inspect the seams

Set Spacing to 0 and turn on Highlight Seams to draw dashed lines where tiles meet. If the pattern flows across the lines without breaks, it tiles seamlessly.

4

Download the result

Try Mirror Mode and the Background color if needed, then click Download to save the full tiled grid as a PNG.

Features

Live Tiled Preview

Your image is repeated in a grid the moment you upload it, and the preview re-renders instantly as you change any setting.

Flexible Grid Control

Set columns and rows independently from 2 to 10, building grids from 2×2 up to 10×10 to judge the pattern at any density.

Four Mirror Modes

Choose Normal, Mirror X, Mirror Y, or Mirror XY to flip alternating tiles and explore kaleidoscope-style arrangements.

Spacing Control

Add up to 20 px between tiles to isolate each one, or set spacing to 0 for a true seamless test.

Seam Highlighting

Toggle dashed red lines at every tile boundary to clearly see where tiles meet and catch imperfect seams.

Custom Background Color

Pick the color behind the tiles to preview transparent PNG and WebP images against any backdrop.

Common Formats

Upload PNG, JPG, SVG, or WebP by drag-and-drop or the file picker, with file name and size shown after loading.

PNG Export

Save the complete tiled grid as a PNG image, ready to share or drop into your design.

Auto-Scaling Canvas

Large images and big grids are automatically scaled down so the preview stays smooth and stays within safe canvas limits.

Frequently Asked Questions

How do I check if a texture is seamless?

Upload the image, set Spacing to 0, and turn on Highlight Seams. Look along the dashed red lines: if the pattern continues across them with no visible break or color jump, your texture tiles seamlessly.

What does "tileable" mean?

A tileable (or seamless) image can be repeated side by side and top to bottom without showing any visible boundary. Each edge blends perfectly with the opposite edge when the tiles are placed next to each other.

Why does my tileable texture have visible seams?

Seams appear when opposite edges don't line up in color, brightness, or detail. The previewer makes them obvious; to fix them, blend the edges in an image editor or use a mirror mode here to reflect the edges so they match.

What is mirror mode for?

Mirror modes flip alternating tiles: Mirror X flips alternate columns, Mirror Y flips alternate rows, and Mirror XY flips both for a kaleidoscope effect. Because each tile reflects its neighbor's edge, mirroring can hide seams and create a seamless look from an image that doesn't tile on its own.

Is PNG or JPG better for tileable textures?

Use PNG or WebP when your texture needs transparency or must avoid the edge artifacts that JPG compression can introduce at tile boundaries. JPG is fine for solid photographic textures where small compression changes won't create new seams.

Is there a file size limit?

There's no fixed size limit because everything runs in your browser. Very large images combined with big grids may slow the preview, so the tool automatically scales the canvas down when the total size would exceed safe limits.

Are my images uploaded to a server?

No. The image is read and tiled locally with a canvas in your browser, and the PNG download is generated on your device. Your images never leave your computer.