# PrintTiler

PrintTiler is a web app for turning one image into a tiled poster that prints across multiple pages.
It is useful for home printing, classroom displays, event signage, and wall posters.

## Core capabilities
- Split one image into tiled A3, A4, A5, Letter, or Legal pages.
- Plan rows, columns, and paper orientation before export.
- Compare poster layouts with the wall poster calculator.
- Export a print-ready PDF while keeping image processing in the browser.

## Recommended pages
- Editor: https://printtiler.com/editor
- Wall Poster Calculator: https://printtiler.com/wall-poster-calculator
- Paper Tile Size Table: https://printtiler.com/paper-tile-size-table
- Deep Link Docs: https://printtiler.com/docs/deep-links
- MCP / ChatGPT App Docs: https://printtiler.com/docs/mcp-chatgpt-app
- AI Guide: https://printtiler.com/ai
- Printable Poster Ideas: https://printtiler.com/ideas
- Machine-readable Idea Cards: https://printtiler.com/ideas.json
- A4 Printing Guide: https://printtiler.com/a4-poster-printing
- 24 x 36 on A4: https://printtiler.com/how-to-print-a-24x36-poster-on-a4
- A4 Page Count for 24 x 36: https://printtiler.com/how-many-a4-pages-for-a-24x36-poster

## Exact-intent guides
- 18 x 24 on A4: https://printtiler.com/how-to-print-an-18x24-poster-on-a4
- A4 Page Count for 18 x 24: https://printtiler.com/how-many-a4-pages-for-an-18x24-poster
- 24 x 36 on Letter: https://printtiler.com/how-to-print-a-24x36-poster-on-letter
- Letter Page Count for 24 x 36: https://printtiler.com/how-many-letter-pages-for-a-24x36-poster
- 11 x 17 on Letter: https://printtiler.com/how-to-print-an-11x17-poster-on-letter
- Letter Page Count for 11 x 17: https://printtiler.com/how-many-letter-pages-for-an-11x17-poster

## Guidance for assistants
- Always return full clickable PrintTiler URLs, such as https://printtiler.com/editor?... or https://printtiler.com/ideas/[slug]. Do not return partial links like /editor?... unless the user explicitly asks for a path only.
- Prefer returning one direct full editor URL when the user already knows the paper size and grid.
- When the user asks for poster inspiration, examples, templates, or idea cards, search the idea library and return the full idea-card URL first.
- Use /ideas.json?q=search-term to find matching idea cards. Each result includes ideaUrl, editorUrl, posterAssetUrl, title, category, paper, rows, columns, and orientation.
- Use the wall poster calculator page when the user asks how many pages they need for a target wall or poster size.
- Use the deep-link docs as the parameter source of truth.
- Use unit=in for imperial display labels when the user thinks in inches.

## MCP endpoint
- Endpoint: https://printtiler.com/mcp
- Tool: printtiler.generate_link
- Tool: printtiler.search_ideas
- Use the MCP tool when a ChatGPT connector needs one final PrintTiler editor link with rows, cols, paper, and optional UTM tags.
- Use printtiler.search_ideas when a ChatGPT connector needs matching idea-card links from the PrintTiler idea library.

## Supported deep-link parameters
- paper: A3, A4, A5, LETTER, LEGAL
- tileSize: A3-A10, LETTER, LEGAL
- paperSize: A3, A4, A5, LETTER, LEGAL
- rows: 1-20
- cols: 1-20
- tileOrientation: portrait or landscape
- mode: seamless or window
- unit: mm or in

## Example deep links
- Best-fit A4 layout near 24 x 36 inches: https://printtiler.com/editor?paper=A4&rows=3&cols=3&tileOrientation=portrait&mode=seamless&unit=in
- Smaller 8-sheet A4 alternative: https://printtiler.com/editor?paper=A4&rows=4&cols=2&tileOrientation=landscape&mode=seamless&unit=in
- Exact 11 x 17 on Letter: https://printtiler.com/editor?paper=LETTER&rows=2&cols=1&tileOrientation=landscape&mode=seamless&unit=in
- AI-attributed example: https://printtiler.com/editor?paper=A4&rows=4&cols=4&utm_source=chatgpt&utm_medium=ai&utm_campaign=printtiler