{"uid":"cap_DGTlQmxBdgH9UlLNVwZHF","slug":"manylives-book-cover-size-calculator-621082be","name":"ManyLives Book Cover Size Calculator","description":"Pay-per-call tools for people building AI agents: live web search and page contents, point-in-time crypto market data and news for backtests (no lookahead), verifiable track records of 1,000 crypto strategies locked on the Base network, company profiles, quick AI and batch prices. Ask us to turn a public website into a JSON endpoint. Pay per call, no account, free trial.","url":"https://api.manylives.me/paid/text/book-cover-size?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"dpi":{"type":"string","description":"optional, default 300"},"trim":{"type":"string","examples":["8.5x8.5"],"description":"width x height in inches, e.g. \"8.5x8.5\" or {width, height}"},"pages":{"type":"string","examples":[24],"description":"interior page count"},"paper":{"type":"string","examples":["premium_color"],"description":"bw_white (default), bw_cream, standard_color or premium_color"}}},"responseSchema":{"type":"json","example":{"ok":true,"cover":{"full_wrap":{"px":{"width":5192,"height":2625},"width":{"in":17.306,"mm":439.6},"height":{"in":8.75,"mm":222.3}},"text_safe":{"spine":"not allowed; keep spine text at least 0.0625\" (1.6 mm) from each spine edge"},"spine_width":{"in":0.056,"mm":1.4}},"interior":{"page_with_bleed":{"width":{"in":8.625,"mm":219.1},"height":{"in":8.75,"mm":222.3}},"inside_gutter_margin_min":{"in":0.375,"mm":9.5}},"problems":[],"warnings":[]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CEMlfiLh73G9iKv5BYcAH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates exact pixel dimensions and physical measurements for a print-on-demand book cover, including full wrap, spine width, and bleed zones, given trim size, page count, and paper type.","exampleAgentPrompt":"Calculate the full-wrap cover dimensions for a paperback that's 6x9 inches, 240 pages, printed on standard color paper at 300 DPI — I need the pixel size, spine width in both inches and millimeters, and any bleed info.","exampleUseCases":[{"title":"Self-publisher designing a paperback cover","prompt":"I'm designing a cover for my novel — it's a 6x9 trim, 320 pages, black and white interior on cream paper at 300 DPI. Can you tell me the exact full wrap pixel dimensions and spine width so I can set up my Photoshop canvas correctly?"},{"title":"Children's book with full-color interior","prompt":"What should my cover canvas size be for a square children's book — 8.5x8.5 inches, 32 pages, premium color paper at 300 DPI? I need pixels and millimeters for the spine and bleed areas."},{"title":"Bulk template generation for an author services company","prompt":"I need cover dimension specs for a 5.5x8.5 trade paperback with 180 pages printed on standard color paper — please give me the full wrap size in pixels and the spine width in both inches and mm so I can build a design template."}],"resultDescription":"Returns a JSON object with full wrap dimensions in pixels, inches, and millimeters; spine width in inches and millimeters; text-safe zone guidance for spine text; page-with-bleed dimensions; inside gutter margin minimums; and arrays of any detected problems or warnings based on the inputs.","failureModes":["Invalid trim format (must be 'WxH' string or {width, height} object) returns an error","Unrealistic page counts may produce warnings or problems in the response arrays","Missing required fields (pages, trim) may result in errors or incorrect defaults","DPI values outside typical print ranges may yield unexpected pixel dimensions"],"whenToPreferThis":"Use this endpoint when you need precise, print-ready book cover dimensions — especially full wrap pixel sizes, spine widths, and bleed zones — for a given trim size, page count, and paper stock. It's ideal for AI agents helping authors or designers prepare artwork for print-on-demand platforms like KDP or IngramSpark. Prefer this over generic calculators when you need structured JSON output suitable for downstream automation or template generation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T06:39:17.198Z","isFirstParty":false,"canonicalSlug":"manylives-book-cover-size-calculator-621082be"}