[{"data":1,"prerenderedAt":150},["ShallowReactive",2],{"guide:pdf-accessibility-structure-checks":3},{"slug":4,"title":5,"description":8,"keywords":11,"updatedAt":14,"summary":15,"sections":24,"relatedPages":97},"pdf-accessibility-structure-checks",{"zh-Hant-TW":6,"en":7},"PDF 無障礙檢查：看起來正常的文件，還需要看哪些結構訊號？","PDF Accessibility Checks: What Structure Signals Matter When a Document Looks Fine?",{"zh-Hant-TW":9,"en":10},"PDF 看起來像文件，不代表輔助科技能理解它。這篇用保守方式說明文件語言、標籤、閱讀順序、標題、書籤、連結、圖片替代文字與表單欄位等結構訊號，以及 DevCheck 能協助做的初步檢查。","A PDF can look like a document without exposing usable structure to assistive technologies. This guide explains structural signals such as document language, tags, reading order, headings, bookmarks, links, image alternatives, and form fields, and how DevCheck can support preliminary checks.",{"zh-Hant-TW":12,"en":13},"PDF 無障礙檢查, PDF 無障礙, 無障礙 PDF, PDF 標籤, PDF 替代文字, PDF 螢幕閱讀器, PDF 結構檢查","PDF accessibility checker, PDF accessibility, accessible PDF, PDF tags, PDF alt text, PDF screen reader, PDF structure check","2026-07-23",{"zh-Hant-TW":16,"en":20},[17,18,19],"PDF 的外觀不等於輔助科技能理解的文件結構。","初步檢查可以先看文件語言、標籤、標題、書籤、閱讀順序、連結、圖片替代文字與表單欄位等訊號。","DevCheck 的 PDF 檢查是本機結構訊號檢查，不是 PDF 修復、自動加標籤、PDF\u002FUA 認證或完整合規判定。",[21,22,23],"A PDF’s visual appearance is not the same as structure that assistive technologies can understand.","A preliminary review can look at signals such as document language, tags, headings, bookmarks, reading order, links, image alternatives, and form fields.","DevCheck’s PDF check is a local structure-signal check, not PDF remediation, automatic tagging, PDF\u002FUA certification, or a complete conformance decision.",[25,38,64,75,86],{"title":26,"body":29},{"zh-Hant-TW":27,"en":28},"PDF 不能只看「畫面是否正常」","A PDF cannot be judged only by how it looks",{"zh-Hant-TW":30,"en":34},[31,32,33],"很多網站維護者上架 PDF 時，第一眼會確認排版、圖片、頁碼和內容是否看起來正常。這很必要，但不夠。PDF 是固定版面文件，畫面看起來正確，不代表螢幕閱讀器、鍵盤使用者或其他輔助科技能理解文件的閱讀順序、標題層級、連結目的或表單欄位。","PDF Association 在介紹 PDF\u002FUA 時也強調，可及 PDF 需要語意結構資訊，而不只是視覺內容。Adobe 和 Microsoft 的官方文件也把標籤、閱讀順序、圖片替代文字、表單欄位與檢查器放在 PDF accessibility workflow 裡。","所以這篇不把 PDF 無障礙說成一個簡單分數。比較實際的起點，是先看文件是否留下足夠的結構訊號，讓維護者知道它是否需要進一步檢查或回到來源文件修正。",[35,36,37],"When maintainers publish a PDF, the first check is often visual: layout, images, page numbers, and visible content. That is necessary, but it is not enough. A PDF can look correct while screen readers, keyboard users, or other assistive technologies still lack useful reading order, heading hierarchy, link purpose, or form-field information.","The PDF Association’s PDF\u002FUA material emphasizes that accessible PDFs need semantic structure, not only visual content. Adobe and Microsoft documentation also place tags, reading order, image alternatives, form fields, and accessibility checking inside the PDF accessibility workflow.","This guide therefore does not treat PDF accessibility as a simple score. A more practical starting point is to inspect whether the document exposes enough structure signals to decide whether deeper review or source-document repair is needed.",{"title":39,"body":42,"items":47},{"zh-Hant-TW":40,"en":41},"可以先看的結構訊號","Structure signals to inspect first",{"zh-Hant-TW":43,"en":45},[44],"初步檢查不等於完整檢測，但它可以快速排除一些明顯風險。若文件完全沒有語言、沒有標籤、沒有可理解的標題或書籤，維護者就不應只因為視覺排版正常而放心上架。",[46],"A preliminary check is not a full audit, but it can quickly surface obvious risks. If a document has no language, no tags, no understandable headings, or no useful bookmarks, maintainers should not treat it as safe just because the visual layout looks correct.",{"zh-Hant-TW":48,"en":56},[49,50,51,52,53,54,55],"文件語言：輔助科技需要知道主要語言，才能使用較合理的朗讀規則。","標籤結構：Tagged PDF 能提供段落、標題、列表、表格、圖片與其他內容的語意線索。","閱讀順序：畫面上的排列不一定等於輔助科技讀到的順序，尤其是多欄、圖文混排與表格文件。","標題與書籤：長文件如果沒有標題層級或書籤，使用者很難快速跳到需要的段落。","連結文字：連結應讓使用者理解目的，不應只留下難以判斷的裸網址或重複的「點此」。","圖片替代文字：資訊圖片需要替代文字；裝飾圖片則不應製造多餘朗讀負擔。","表單欄位：可填寫 PDF 需要欄位名稱、說明、狀態與合理的操作順序。",[57,58,59,60,61,62,63],"Document language: assistive technologies need the primary language to apply more appropriate reading rules.","Tag structure: a tagged PDF can expose semantic clues for paragraphs, headings, lists, tables, images, and other content.","Reading order: the visual order is not always the order exposed to assistive technologies, especially in multi-column layouts, mixed text\u002Fimage content, and tables.","Headings and bookmarks: without heading hierarchy or bookmarks, long documents are harder to navigate.","Link text: links should expose their purpose instead of relying only on raw URLs or repeated “click here” text.","Image alternatives: informative images need alternatives; decorative images should not add unnecessary reading burden.","Form fields: fillable PDFs need field names, instructions, states, and a sensible operation order.",{"title":65,"body":68},{"zh-Hant-TW":66,"en":67},"哪些文件最值得先檢查？","Which PDFs should be checked first?",{"zh-Hant-TW":69,"en":72},[70,71],"不是每個網站都能立刻重新處理所有舊 PDF。比較務實的方式，是先看使用者是否需要靠這份文件完成任務。","如果 PDF 只是低流量的歷史公告，風險可能較低；如果它是申請表、活動簡章、報名規則、價目表、產品說明、醫療或金融資訊、政策文件、客服指引，或任何使用者必須下載後才能繼續完成流程的文件，就應該優先檢查。",[73,74],"Not every website can immediately rework every old PDF. A practical approach is to prioritize documents that people need in order to complete a task.","A low-traffic historical notice may carry lower risk. An application form, event guide, registration rule, pricing document, product instructions, health or financial information, policy document, support guide, or any PDF that users must download to continue a process should be reviewed sooner.",{"title":76,"body":79},{"zh-Hant-TW":77,"en":78},"自動檢查不能替人判斷內容是否真的可用","Automated checks cannot decide whether the content is truly usable",{"zh-Hant-TW":80,"en":83},[81,82],"PDF 結構訊號可以提示風險，但不能取代人工判斷。工具可能看得到文件有標籤，卻不知道標題是否真的表達內容層級；工具可能看得到圖片有替代文字，卻不知道那段文字是否對使用者有幫助；工具也可能看得到表格結構，卻無法完整判斷使用者是否能理解資料關係。","因此比較負責任的說法是：PDF checker 可以幫你知道哪裡值得看，不應被包裝成「這份 PDF 已經可及」的最後答案。",[84,85],"PDF structure signals can surface risk, but they do not replace human judgment. A tool may see that a document has tags without knowing whether headings actually represent the content hierarchy. It may detect image alt text without knowing whether the text helps the user. It may detect table structure without fully judging whether the data relationships make sense.","A responsible framing is that a PDF checker can help you decide where to look. It should not be packaged as the final answer that a PDF is accessible.",{"title":87,"body":90},{"zh-Hant-TW":88,"en":89},"DevCheck 在這裡能做什麼，也不能做什麼","What DevCheck can and cannot do here",{"zh-Hant-TW":91,"en":94},[92,93],"DevCheck 的 PDF 檢查是在使用者自己的瀏覽器環境中進行，用來查看 PDF 的基本結構訊號。它適合在上架前、QA、內容維護或收到回報後，協助團隊快速判斷文件是否需要進一步處理。","它不會把 PDF 上傳到 Accesserty，不做 PDF 自動修復，不做自動加標籤，也不宣稱 PDF\u002FUA 或法規符合。需要正式對外承諾、採購符合性、複雜表格、長文件或重要公共服務文件時，仍應安排更完整的 PDF 無障礙審查。",[95,96],"DevCheck’s PDF check runs in the user’s own browser environment and inspects basic PDF structure signals. It is useful before publishing, during QA, during content maintenance, or after a report, when a team needs to decide whether a document needs deeper work.","It does not upload PDFs to Accesserty, remediate PDFs, automatically tag PDFs, or claim PDF\u002FUA or legal conformance. For formal public commitments, procurement conformance, complex tables, long documents, or important public-service documents, a more complete PDF accessibility review is still appropriate.",[98,105,110,115,120,125,130,135,140,145],{"label":99,"path":101,"description":102},{"zh-Hant-TW":100,"en":100},"Accesserty DevCheck","\u002Fdevcheck",{"zh-Hant-TW":103,"en":104},"用瀏覽器內工具檢查本機、測試站、登入後頁面與互動狀態。","Run browser-based checks on local builds, staging pages, authenticated screens, and interactive states.",{"label":106,"path":109},{"zh-Hant-TW":107,"en":108},"自動化與人工檢測術語頁","Automated vs manual testing glossary page","\u002Fglossary\u002Fautomated-vs-manual-accessibility-testing",{"label":111,"path":114},{"zh-Hant-TW":112,"en":113},"PDF 無障礙檢查工具","PDF accessibility checker","\u002Fpdf-accessibility-checker",{"label":116,"path":119},{"zh-Hant-TW":117,"en":118},"PDF 無障礙術語頁","PDF accessibility glossary page","\u002Fglossary\u002Fpdf-accessibility",{"label":121,"path":124},{"zh-Hant-TW":122,"en":123},"網站上線前無障礙檢測指南","Accessibility testing before launch guide","\u002Fguides\u002Faccessibility-testing-before-launch",{"label":126,"path":129},{"zh-Hant-TW":127,"en":128},"自動化檢測限制指南","Automated accessibility checks limits guide","\u002Fguides\u002Fautomated-accessibility-checks-limits",{"label":131,"path":134},{"zh-Hant-TW":132,"en":133},"PDF Association：ISO 14289 \u002F PDF\u002FUA","PDF Association: ISO 14289 \u002F PDF\u002FUA","https:\u002F\u002Fpdfa.org\u002Fresource\u002Fiso-14289-pdfua\u002F",{"label":136,"path":139},{"zh-Hant-TW":137,"en":138},"Adobe：建立與驗證 PDF 無障礙","Adobe: Create and verify PDF accessibility","https:\u002F\u002Fhelpx.adobe.com\u002Facrobat\u002Fusing\u002Fcreate-verify-pdf-accessibility.html",{"label":141,"path":144},{"zh-Hant-TW":142,"en":143},"Microsoft：建立易於存取的 PDF","Microsoft: Create accessible PDFs","https:\u002F\u002Fsupport.microsoft.com\u002Foffice\u002Fcreate-accessible-pdfs-064625e0-56ea-4e16-ad71-3aa33bb4b7ed",{"label":146,"path":149},{"zh-Hant-TW":147,"en":148},"Section508.gov：Create accessible PDFs","Section508.gov: Create accessible PDFs","https:\u002F\u002Fwww.section508.gov\u002Fcreate\u002Fpdfs\u002F",1789828081471]