Titan Atlas - Client-Side Gigapixel Map Viewer and Image Stitcher
Titan Atlas is created by WorldEater404 to render, stitch, and inspect gigapixel scale cartography, fantasy RPG maps, and multi-gigabyte imagery in 60fps WebGL.
Upload multiple images (JPG, PNG, WebP...) and arrange them on a grid. Every image is normalized into one uniform
internal format (RGBA bitmap at exact cell size) before rendering, so the tile engine never deals with mixed formats or sizes.
Drag thumbnails to rearrange.
Grid & Cell Settings
Cell width and height define each hex bounding box. Adjacent hexes overlap only in their transparent corners.
Images:0
Grid:–
Cell Size:–
Final Map:–
Megapixels:–
Project & FilesAuto-save ready
Your work is auto-saved in your browser. "Save Project File" downloads a standalone bundle with images to keep forever.
Drop multiple images here, or click to browse
JPG · PNG · WebP · BMP · GIF — mixed formats & sizes welcome, all normalized at build
LAYOUT PREVIEW
Load Custom Tile Pyramid (XYZ)
Enter a standard Slippy XYZ tile URL template (e.g. https://.../{z}/{x}/{y}.png) and total dimensions.
Local Large Image Viewer
Select any high-resolution image file (e.g. 5,000 to 50,000+ pixels). The viewer will slice and build multi-resolution mip tiles in background workers dynamically without overloading memory.
Drag & Drop Large Image Here, or click to browse
Supports PNG, JPG, WebP, SVG, BMP
Decoding image header...0%
Export Selected Region
The export is rendered tile-by-tile at the requested output size. It never creates the full map in memory. Output is limited to 8192 px per side and 32 megapixels to protect the browser tab.