Image Grid Slicer (9-Grid / Splitter)
Split one image into a fixed 3×3 grid and offer nine separate PNG tiles; edge tiles may have transparent padding, no ZIP.
About this image grid slicer (9-grid / splitter)
Split one image into a fixed 3×3 grid and offer nine separate PNG tiles; edge tiles may have transparent padding, no ZIP Processes media assets directly in the browser using HTML5 Canvas and WebAssembly decoders, ensuring zero file uploads.
Image processing & canvas pipeline
Divides the selected image into a 3×3 grid using ceiling-rounded tile dimensions and exposes nine separate PNG results. Edge tiles may include transparent padding; no ZIP archive is made.
Worked image transformation example
Scenario: Split a 12×9 four-color PNG into the fixed nine-tile grid.
Sample input:
Processing: Uses ceil(width/3) and ceil(height/3), draws each of nine source rectangles into a canvas of that tile size, and exposes nine PNG data URLs.
Illustrative output:
Resolution, dimension & memory limits
Edge tiles may have transparent padding; there is no ZIP export or user-selected grid size.
Image Grid Slicer (9-Grid / Splitter) image operations execute in client memory via HTML5 Canvas and browser decoders. Inspect output previews before replacing source assets.
In-memory image processing boundary
File buffers and document assets in Image Grid Slicer (9-Grid / Splitter) are processed in-memory via local browser APIs with zero file uploads to CZOA servers.
Image format & W3C Canvas standards
W3C Canvas 2D context specifications and standard image container formats:
Image Grid Slicer (9-Grid / Splitter) verification · Audit standards
How to use it
- Select an image.
- Divide its natural dimensions into ceiling-rounded 3×3 tiles and draw each tile.
- Expose nine separate PNG downloads.
Frequently asked questions
How does Image Grid Slicer divide an image?+
It fixes the grid at 3 × 3, computes tile width and height with ceil(source dimension / 3), draws nine source rectangles into nine same-sized PNG canvases, and exposes their data URLs.
What input and controls does Image Grid Slicer provide?+
The page has one image-file chooser and Process locally. Rows, columns, overlap, crop anchoring, output naming, ZIP export, and social-media presets are not controls.
What limits apply to the nine tiles?+
Dimensions not divisible by three use ceil, so edge tiles can include canvas padding. It needs a browser-decodable image and returns PNG data URLs; it does not guarantee square tiles or preserve source metadata.
What result and limits should I expect when using Image Grid Slicer (9-Grid / Splitter)?+
Choose the 12×9 four-color PNG. The nine source rectangles are 4×3 pixels, starting at x=0,4,8 and y=0,3,6; each is drawn into a 4×3 PNG Canvas. Browser encoding remains browser-dependent.