Sources & Standards
InkyValley prefers primary standards bodies, platform documentation and manufacturer technical material when a factual specification matters. The live ledger below shows the references currently wired into tools and guides.
47 active source recordsEach record has a verification date
Source hierarchy
Primary standards and official provider documentation come first. Manufacturer documentation controls equipment-specific behavior. Secondary technical sources are used only when they add practical context rather than replace the controlling specification.
No source laundering
A page does not cite an official source merely to make unrelated advice look authoritative. The cited source must support the specific standard, rule, formula assumption or limitation described.
Verification dates
A verification date records when the linked source and the dependent site rule were checked together. It is not a claim that a stable mathematical formula changed on that date. Provider-controlled requirements should always be rechecked before an expensive or irreversible production run.
Current authoritative and technical source ledger
These are the external references currently connected to source-backed InkyValley tools and guides. Open the linked record to verify the controlling requirement in its original context.
Adobe — Resolution specs for printing imagesAdobe describes 300 PPI as a standard high-quality close-view print target and notes that large-format work viewed farther away can use lower resolution.Verified 2026-08-18 · Source ID: adobe-resolutionAdobe — Print bleed and slug areas in InDesignAdobe states that 0.125 in / 3 mm is a typical industry bleed and advises verifying the print provider requirement.Verified 2026-08-18 · Source ID: adobe-bleedISO/IEC 24711:2021 — Ink cartridge yieldStandardized method for determining colour inkjet cartridge page yield on plain paper; yield does not establish quality or reliability.Verified 2026-08-18 · Source ID: iso-24711ISO/IEC 19752:2025 — Monochrome toner cartridge yieldStandardized method for determining toner-cartridge yield for monochrome electrophotographic print systems.Verified 2026-08-18 · Source ID: iso-19752ISO 536:2019 — Paper and board grammageSpecifies a method for determining paper and board grammage.Verified 2026-08-18 · Source ID: iso-536HP — What Is the Cost Per Page for Ink Tank Printers?HP explains cost per page using ink price/yield and paper cost and notes color usually costs more than black-only printing.Verified 2026-08-09 · Source ID: hp-cppAmazon KDP — Create a Paperback CoverCurrent KDP paperback cover equations, 0.125-inch bleed, and paper-specific spine factors.Verified 2026-08-18 · Source ID: kdp-coverAmazon KDP — Paperback formatting troubleshootingKDP states books under 79 pages cannot have printed spine text and explains cover-size/bleed rejection issues.Verified 2026-08-18 · Source ID: kdp-spine-textAmazon KDP — Paperback Printing CostKDP says print cost varies by marketplace, page count, ink type and trim size and uses fixed plus per-page components.Verified 2026-08-18 · Source ID: kdp-print-costAmazon KDP — Print Cover Calculator and TemplatesOfficial cover calculator/template generator for paperback and hardcover dimensions.Verified 2026-08-18 · Source ID: kdp-cover-calculatorXerox — Paper Guide: basis-weight and GSM equivalentsXerox documents the different U.S. basis sheet sizes used for bond/writing, text/book, cover, index and Bristol categories and provides GSM equivalents.Verified 2026-08-09 · Source ID: xerox-paper-weightW3C — CSS Values and UnitsDefines CSS absolute-length relationships including 1 in = 96 px and 1 cm = 96 px / 2.54.Verified 2026-08-18 · Source ID: w3c-css-unitsISO 216:2007 — A and B series trimmed paper sizesCurrent ISO standard for trimmed A- and B-series writing paper sizes; confirmed current by ISO.Verified 2026-08-18 · Source ID: iso-216ISO 534:2011 — Paper and board thicknessSpecifies single-sheet and pack/bulking thickness measurement methods for paper and board.Verified 2026-08-18 · Source ID: iso-534Canon — How page yields are measuredExplains that quoted inkjet page yields are standardized estimates measured under defined test conditions.Verified 2026-08-18 · Source ID: canon-yieldEpson — Ink yields and ISO methodologyDocuments ISO/IEC 24711/24712-based yield methodology and why actual yield can vary.Verified 2026-08-18 · Source ID: epson-yieldNeenah Paper — Basis weightsReference for common U.S. basis sheet dimensions including bond, cover and index categories.Verified 2026-08-18 · Source ID: neenah-basisISO 217:2013 — Untrimmed RA and SRA paper sizesCurrent ISO standard for primary and supplementary untrimmed paper-size ranges used before trimming to ISO 216 finished sizes; ISO lists the 2013 edition as current after 2025 review.Verified 2026-08-18 · Source ID: iso-217Amazon KDP — Paperback Submission GuidelinesCurrent paperback file/cover requirements, including groundwood spine factor, cover bleed/safe placement, minimum image resolution, flattening/fonts and common submission failures.Verified 2026-08-18 · Source ID: kdp-submissionChrome for Developers — WebMCP APIs and Lighthouse agentic browsingCurrent Chrome documentation for registering structured browser-agent tools with document.modelContext, including names, descriptions, input schemas and execution.Verified 2026-08-18 · Source ID: chrome-webmcpChrome for Developers — WebMCP tool securityCurrent Chrome guidance for read-only and untrusted-content annotations and careful exposure of agentic tools.Verified 2026-08-18 · Source ID: chrome-webmcp-securityllms.txt specification v2Emerging llms.txt convention: Markdown H1/summary plus curated H2 link lists for agent-readable site context.Verified 2026-08-18 · Source ID: llms-txt-specAdobe Acrobat — Print production tools and PreflightAdobe describes print-production checks and the importance of CropBox, TrimBox, BleedBox, ArtBox and MediaBox for print positioning and imposition.Verified 2026-08-18 · Source ID: adobe-preflightISO 15930-7:2010 — PDF/X-4International standard defining PDF/X-4 exchange of print-reproduction data using PDF 1.6.Verified 2026-08-18 · Source ID: iso-pdfx4Ghent Workgroup — Technical SpecificationsGWG PDF/X-Plus creation and preflight specifications and best-practice reference implementations for graphic-arts workflows.Verified 2026-08-18 · Source ID: gwg-preflightGS1 General SpecificationsCore GS1 standards document for GS1 identification keys and barcode use.Verified 2026-08-18 · Source ID: gs1-generalGS1 Logistic Label GuidelineFor GS1 logistic-label barcodes in scope, the guideline specifies quiet zones of at least 10 X-dimensions at each side.Verified 2026-08-18 · Source ID: gs1-logistic-labelAvery — Bleed and Safe AreasAvery explains cut/trim, safety and bleed lines and the need to extend full-bleed backgrounds beyond the cut line.Verified 2026-08-18 · Source ID: avery-bleed-safeAvery — Roll Label Artwork GuidelinesOfficial roll-label artwork guidance and downloadable templates for bleed, trim and safety-line setup.Verified 2026-08-18 · Source ID: avery-roll-artworkRoland DG — VersaSTUDIO BY2-20 DTF workflowOfficial DTF workflow reference: CMYK + white is printed in reverse to film, followed by powder application while ink is wet.Verified 2026-08-18 · Source ID: roland-dtfEpson — SureColor F170 Dye-Sublimation PrinterOfficial dye-sublimation printer/media reference, including supported Epson transfer paper and media handling.Verified 2026-08-18 · Source ID: epson-sublimationSawgrass — Sublimation Heat Press SettingsOfficial Sawgrass starting-reference table for substrate-specific time, temperature and pressure; the blank supplier’s instructions still control the actual product.Verified 2026-08-18 · Source ID: sawgrass-press-settingsScreenPrinting.com — Darkroom exposure guidanceSpecialist screen-printing guidance explaining that there is no universal exposure time and recommending a step-wedge exposure test for each setup.Verified 2026-08-18 · Source ID: screen-exposureAmazon KDP — Set Trim Size, Bleed, and MarginsCurrent KDP paperback inside/gutter and outside margin requirements by page-count range, including different outside minimums for bleed/no-bleed interiors.Verified 2026-08-18 · Source ID: kdp-marginsAdobe Acrobat — Output PreviewAdobe Output Preview covers separations, color warnings, total area coverage, object inspection, simulation profiles and overprint simulation for print-production review.Verified 2026-08-18 · Source ID: adobe-output-previewAdobe Acrobat — Color conversion and ink managementAdobe documents print-production color conversion and ink-management workflows; device/output profiles and final print conditions control production color decisions.Verified 2026-08-18 · Source ID: adobe-color-printGhent Workgroup — Digital Print SpecificationGWG publishes PDF creation and quality-control requirements for small-format digital print workflows.Verified 2026-08-18 · Source ID: gwg-digital-printGhent Workgroup — Sign & Display SpecificationGWG addresses PDF requirements for digitally printed large-format sign and display workflows.Verified 2026-08-18 · Source ID: gwg-sign-displayGhent Workgroup — PackagingGWG packaging work covers packaging-specific PDF requirements and ISO 19593-1 Processing Steps used to identify production elements such as cut and fold lines.Verified 2026-08-18 · Source ID: gwg-packagingGS1 — What should I check to ensure good quality barcodes?GS1 highlights check digits, quiet zones, contrast, colour choice and symbol construction; a planning tool does not replace formal barcode verification.Verified 2026-08-18 · Source ID: gs1-qualityGS1 — Main characteristics of GS1 DataMatrixGS1 states that GS1 DataMatrix requires a one-module quiet zone on each side; final encoded matrix size depends on the data and symbol selected.Verified 2026-08-18 · Source ID: gs1-datamatrixAvery Dennison — Roll CalculatorsAvery Dennison connects roll outside diameter, core outside diameter, material thickness and roll length in label-stock roll planning.Verified 2026-08-18 · Source ID: avery-roll-calculatorsAmazon KDP — Create a Hardcover CoverKDP specifies a single-PDF hardcover cover, 0.51-inch wrap, 0.635-inch outer safe placement, 0.4-inch hinge zone, barcode placement requirements and a 300-DPI cover-image minimum.Verified 2026-08-18 · Source ID: kdp-hardcoverFogra — Image Quality Test FormsFogra publishes free print image-quality test forms as practical work tools; InkyValley test pages are diagnostic aids, not replacements for standardized metrology or certification.Verified 2026-08-18 · Source ID: fogra-test-formsNeenah Paper — Paper 101 / production guidanceNeenah recommends folding with the paper grain; its production guidance also documents grain-sensitive finishing/binding considerations and recommends pretesting.Verified 2026-08-18 · Source ID: neenah-grain-directionGS1 — 2D Barcodes at Retail Point-of-Sale Implementation GuidelineGS1 describes X-dimension and quiet-zone planning for 2D symbols, including a one-X quiet zone for Data Matrix and four-X quiet zone for QR Code in the cited retail context.Verified 2026-08-18 · Source ID: gs1-2d-retailGS1 — Barcodes standards overviewGS1 identifies its General Specifications as the core standard controlling GS1 barcode identification, sizing and application requirements.Verified 2026-08-18 · Source ID: gs1-barcodes