# Printshop > QR codes, calendars, labels, puzzles and posters — print-perfect PDFs in seconds. Printshop makes things to print: QR codes and barcodes, Wi-Fi guest cards, calendars in 17 languages with week numbers and public holidays, label sheets filled from a CSV file, graph and music paper, posters tiled over ordinary sheets, folded booklets and, with Puzzle Press, sudokus, mazes, word searches, crosswords, nonograms and maths worksheets with answer keys. Every printable is a true-size vector PDF with a test square, plus SVG and PNG, made in your browser. Printshop (Printables studio) is an app of usefulweb.site (https://usefulweb.site/): a full program that runs in the browser. Its engine is deterministic and the same functions are exposed as tools, so an agent can compute exactly what the app shows. ## Use it - Landing page: https://printshop.usefulweb.site/ - Workspace (browser app): https://printshop.usefulweb.site/app - open a project with https://printshop.usefulweb.site/app#project= or a template with https://printshop.usefulweb.site/app#template= - Project file format (JSON Schema): https://printshop.usefulweb.site/project.schema.json - Tutorials: https://printshop.usefulweb.site/tutorials - JSON API: POST https://printshop.usefulweb.site/api/v1/tools//calculate (catalog: https://printshop.usefulweb.site/api/v1/tools) - OpenAPI: https://printshop.usefulweb.site/openapi.json - MCP (Streamable HTTP): https://printshop.usefulweb.site/mcp ## Engine tools - [QR Code Generator (print-ready)](https://printshopqrcode.usefulweb.site/): QR codes for links, text, Wi-Fi, contacts and more — as vector PDF, SVG and PNG. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-qr-code/calculate · MCP tool `printshop_qr_code` - [Barcode Generator (EAN-13, UPC-A, Code 128)](https://printshopbarcode.usefulweb.site/): EAN-13, UPC-A and Code 128 barcodes with check digits, true-size PDF, SVG and PNG. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-barcode/calculate · MCP tool `printshop_barcode` - [Printable Calendar Maker](https://printshopcalendar.usefulweb.site/): Month or year calendars in 17 languages with week numbers and public holidays. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-calendar/calculate · MCP tool `printshop_calendar` - [Label Sheet Maker with CSV Mail Merge](https://printshoplabelsheet.usefulweb.site/): Address labels, name badges and product labels from a CSV, for any sheet layout. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-label-sheet/calculate · MCP tool `printshop_label_sheet` - [Graph, Dot, Isometric, Hex and Music Paper](https://printshopgraphpaper.usefulweb.site/): Printable grid, dot, isometric, hexagon, music staff and lined paper at exact sizes. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-graph-paper/calculate · MCP tool `printshop_graph_paper` - [Poster Tiler (Big Picture on Many Pages)](https://printshoppostertiler.usefulweb.site/): Print a big poster on ordinary paper: tiles with overlap, crop marks and an assembly map. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-poster-tiler/calculate · MCP tool `printshop_poster_tiler` - [Booklet Maker (Saddle-Stitch Imposition)](https://printshopbooklet.usefulweb.site/): Fold-and-staple booklets: notebook or calendar pages imposed in the right order. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-booklet/calculate · MCP tool `printshop_booklet` - [Sudoku Maker (4×4 to 16×16, with Answer Key)](https://printshopsudoku.usefulweb.site/): Printable sudokus with one solution, graded by the solving techniques needed. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-sudoku/calculate · MCP tool `printshop_sudoku` - [Maze Maker (Rectangle, Hexagon, Round and Shapes)](https://printshopmaze.usefulweb.site/): Printable mazes in squares, hexagons or circles, cut to a heart, star or your own shape. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-maze/calculate · MCP tool `printshop_maze` - [Word Search Maker (Any Language)](https://printshopwordsearch.usefulweb.site/): Printable word searches from your own words, in any language and script. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-word-search/calculate · MCP tool `printshop_word_search` - [Crossword Maker from Your Words and Clues](https://printshopcrosswordfill.usefulweb.site/): Criss-cross crosswords from your own words and clues, numbered, with an answer key. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-crossword-fill/calculate · MCP tool `printshop_crossword_fill` - [Nonogram Maker (Picross from a Picture)](https://printshopnonogram.usefulweb.site/): Nonograms from a drawing or an image, checked for one solution and fixed with givens. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-nonogram/calculate · MCP tool `printshop_nonogram` - [Maths Worksheet Maker (Variants A/B/C with Answers)](https://printshopmathworksheet.usefulweb.site/): Times tables, column sums, division and fractions — seeded variants with answer keys. Part of [Printshop](https://printshop.usefulweb.site/) (ownerApp: printshop). API: POST https://printshop.usefulweb.site/api/v1/tools/printshop-math-worksheet/calculate · MCP tool `printshop_math_worksheet` - [RuleDate Deadline Calculator](https://ruledate.usefulweb.site/): Business-day and deadline maths with public holidays and a step-by-step rule trace. Part of [Opsdeck](https://opsdeck.usefulweb.site/) (ownerApp: opsdeck). API: POST https://printshop.usefulweb.site/api/v1/tools/ruledate/calculate · MCP tool `ruledate` - [Photo Print Size Planner](https://luminaprintplanner.usefulweb.site/): Find how large your photo can print at your chosen resolution. Part of [Lumina](https://lumina.usefulweb.site/) (ownerApp: lumina). API: POST https://printshop.usefulweb.site/api/v1/tools/lumina-print-planner/calculate · MCP tool `lumina_print_planner` - [Image Grid Splitter](https://luminaimagesplitter.usefulweb.site/): Slice a photo into numbered tiles without losing edge pixels. Part of [Lumina](https://lumina.usefulweb.site/) (ownerApp: lumina). API: POST https://printshop.usefulweb.site/api/v1/tools/lumina-image-splitter/calculate · MCP tool `lumina_image_splitter` - [Comic Book & Booklet Planner](https://panelcraftbookplan.usefulweb.site/): Plan a multi-page comic, contact sheet and folded booklet order. Part of [Panelcraft](https://panelcraft.usefulweb.site/) (ownerApp: panelcraft). API: POST https://printshop.usefulweb.site/api/v1/tools/panelcraft-book-plan/calculate · MCP tool `panelcraft_book_plan` ## Formats - Import: Printshop project (.printshop.json), Share link (#project=), CSV for labels (comma, semicolon or tab), JPEG and PNG images (poster, booklet) - Export: PDF (vector, true size, embedded fonts), SVG (each page), PNG (each page, 150 or 300 dpi), Printshop project (.printshop.json), Share link without personal data ## Limits - Printshop prints its own printables; it does not import or impose existing PDF files. - QR codes use numeric, alphanumeric and byte (UTF-8) modes; Kanji mode, Micro QR, structured append and GS1 QR are not supported. - Barcodes: EAN-13, UPC-A and Code 128 (ASCII) only; no EAN-8, add-ons, GS1-128 application identifiers, Data Matrix or PDF417. - Chinese, Japanese and Korean text uses small font subsets with calendar words and common characters; other CJK characters fall back to English labels or are missing from the PDF. - Holidays cover 16 countries for 2024–2030; school holidays and local observances are not included. - Images for posters and booklets must be JPEG or PNG; the PNG preview of a tile shows grey boxes instead of the photo, and very large images make big PDFs. - Colours are sRGB; there is no CMYK, bleed or spot-colour output for professional print shops. - Puzzle Press makes classic sudokus only (no killer, jigsaw or diagonal variants yet); 16 × 16 grids have a time budget and may keep a few extra clues. - Crosswords are criss-cross puzzles built only from your words; there is no dictionary fill for dense newspaper-style grids. Nonograms are black and white. - Word puzzles in Chinese, Japanese or Korean print only characters in Printshop’s small font subsets; missing characters are reported.