Free Online Image Slicer — Split Images into Grid Tiles + ZIP
Sometimes you need an image broken into a clean grid of tiles — for an Instagram carousel, a CSS background mosaic, lazy-loaded web hero tiles or a print collage. PikDraw's Image Slicer does it in seconds, in your browser, with a single drop. Set rows and columns, choose a format, download a ZIP.
What is the Image Slicer — Cut Photos into Tiles or Grids?
Image Slicer is a client-side raster grid slicer. It takes any JPG / PNG / WebP and cuts it into rows × cols tiles, each exported as a standalone file and bundled into a downloadable ZIP. No upload, no watermark, no signup.
Key features
- Any grid from 1×2 up to 32×32
- PNG, JPG or WebP output
- Transparent edges preserved (PNG/WebP)
- Live tile-dimension preview
- Bundled ZIP download via JSZip
- Row-major sorted filenames
- 100% client-side — image never uploads
- Free, unlimited, no signup or watermark
How it works
The uploaded image is decoded into an offscreen canvas. We compute tileW = floor(imageW / cols) and tileH = floor(imageH / rows), then for every (r, c) we draw the corresponding rect into a tile-sized canvas, export via toBlob in your chosen format, and append the blob to an in-memory ZIP. The final ZIP is saved via a temporary object URL.
Why use this tool
Free online slicers either limit free tier exports, watermark output, or upload your image. PikDraw's slicer has no caps, no watermarks, never uploads, and exports in the format you actually need.
Common use cases
- Instagram 3×3 grid carousel layouts
- CSS sprite generation for static sites
- Slicing hero images into lazy-loaded chunks
- Print-and-assemble large-format posters
- Breaking screenshots into shareable strips
- Tile-based map graphics for games
- Educational worksheets and puzzle pieces
How to use this tool
- Upload your image — Drop any JPG, PNG or WebP up to ~50 MB. The tool reads the image into a canvas and shows its native dimensions.
- Pick rows × columns — Type how many rows and columns to slice into. The preview shows live cell dimensions so you can plan exact tile sizes.
- Choose output format — PNG keeps transparency and lossless quality. JPG produces smaller tiles for photographic content. WebP balances both.
- Slice & Download ZIP — Each cell becomes a numbered file (tile_r1_c1.png, tile_r1_c2.png …). All tiles are bundled into a single ZIP for easy download.
Who should use this
Social-media managers planning grid posts, web developers building tile-based layouts, designers prepping print assets, teachers making worksheets, and anyone who needs to chop a single image into a uniform grid.
How to get started
Drop your image, type rows and columns, click Slice. Your ZIP downloads automatically.
Best practices
- For Instagram grids use 3 columns and 1–3 rows
- Pick PNG for graphics, JPG for photos
- Verify tile dimensions in the preview before slicing
- Slice in smaller passes for very large images
Pro tips
- Match rows/cols to a CSS grid you're building for instant layout assets.
- Use 3×3 for Instagram carousel layouts (one big image, nine posts).
- PNG keeps edges crisp; JPG is smaller for photo tiles.
- Slice large images into 2×2 to reduce LCP on slow networks.
Expert insights
💡 Instagram 3×3
Pick rows=3, cols=3 to plan a nine-post Instagram grid from a single hero image.
💡 PNG vs JPG
Use PNG for screenshots and UI, JPG for photos — you'll cut file sizes by 60–80%.
💡 Lazy Loading
Slice large hero images so the above-the-fold tile loads first — instant LCP improvement.
Limitations to be aware of
- Max 1024 tiles per slice (32 × 32 grid)
- Browser canvas limits cap input around 16 megapixels
- Equal tiles only — no custom row/column widths
- No automatic CSS-sprite manifest export
Frequently asked questions
- What's the difference between this and Sprite Sheet Splitter?
- Image Slicer is for generic raster images — cut a photo into tiles for layout, social posts or web optimisation. Sprite Sheet Splitter is purpose-built for game atlases with margin/spacing controls and engine-style naming.
- How large an image can I slice?
- Up to roughly 16 megapixels comfortably; larger images may exceed browser canvas limits. For huge images slice in passes (2×2 then 2×2 again) to stay safe.
- Will the tiles be exactly equal?
- Yes when dimensions divide evenly. When they don't, the last column / row pads to absorb the remainder so no pixels are lost.
- Are tiles named in any specific order?
- tile_rR_cC.{ext} where R and C are 1-indexed. Sort alphabetically for row-major order.
- Is my image uploaded?
- No. Decoding, slicing and ZIP creation all happen in your tab. Nothing is sent to any server.
- What format should I pick?
- PNG for graphics, screenshots and anything with transparency. JPG for photos. WebP if your destination supports it — smallest files, full transparency.