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When I open with Adobe I receive an error: could not open because it is either not a supported file type or because the file has..."},"analysis":{"affected_feature":"email","analyzed_at":"2026-05-29T01:38:52+00:00","complaint_types":["bugs","support"],"confidence":0.68,"conversation_url":"https://wordpress.org/support/topic/problem-uploading-pdf/","evidence_quote":"Problem uploading pdf Often when uploading a pdf the link will open and give the error: This PDF document might not be displayed correctly Open with different viewer.","intent":"problem_report","issue_labels":["bugs","support","support","value"],"model":"heuristic-v1","opportunity_relevance":0.75,"praise_types":["support","value"],"sentiment":"complaint","severity":"medium","slug":"custom-post-type-pdf-attachment","source":"support","summary":"Problem uploading pdf: users show bugs, support pain that may indicate a product gap."},"comments":[{"position":1,"author":"aviplugins.com","published_at":"2015-07-29T07:15:00+00:00","body_summary":"Please check the upload file size limit in your server. That might me the reason that a large file is not uploaded fully. If you have multiple files attached to a single post and the files are large then try to..."}],"source_links":[{"source_url":"https://wordpress.org/support/topic/problem-uploading-pdf/","url":"https://wordpress.org/support/topic/problem-uploading-pdf/","original_url":"https://wordpress.org/support/topic/problem-uploading-pdf/","source_page_url":"/evidence/source?url=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fproblem-uploading-pdf%2F","source_api_url":"/api/evidence/source?url=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fproblem-uploading-pdf%2F"},{"source_url":"https://wordpress.org/plugins/custom-post-type-pdf-attachment/","url":"https://wordpress.org/plugins/custom-post-type-pdf-attachment/","original_url":"https://wordpress.org/plugins/custom-post-type-pdf-attachment/","source_page_url":"/plugin/custom-post-type-pdf-attachment","source_api_url":"/api/plugins/custom-post-type-pdf-attachment"}],"source_link_count":2,"market_key":"download","market_name":"Download","market_url":"/markets/download","opportunity_url":"/opportunities/download","opportunity_card":{"key":"file-document-ops","name":"file and document delivery operations","family_key":"file-document-ops","family_name":"file and document delivery operations","family_label":"file and document delivery operations","display_name":"file and document delivery operations","opportunity_name":"file and document delivery operations","opportunity_label":"file and document delivery operations","decision_bucket":"investigate_pain","commercial_readiness_status":"research_first","commercial_readiness_label":"Research first","validation_ready":false,"is_build_worthy":false,"row_role":"opportunity_family","recommendation_role":"commercial_opportunity_candidate","buyer":"site owners, agencies, educators, and document-heavy businesses","who_buys":"site owners, agencies, educators, and document-heavy businesses","primary_buyer_segment":"site owners","urgent_problem":"File uploads, downloads, and document workflows fail in ways that create support load, privacy risk, and broken handoffs.","problem":"File uploads, downloads, and document workflows fail in ways that create support load, privacy risk, and broken handoffs.","pain":"File uploads, downloads, and document workflows fail in ways that create support load, privacy risk, and broken handoffs.","what_to_build":"Download file delivery assurance for collecting, protecting, and delivering files reliably","first_validation_wedge":"verify download upload, protected download, storage permission, and browser delivery paths","mvp_wedge":"verify download upload, protected download, storage permission, and browser delivery paths","wedge":"verify download upload, protected download, storage permission, and browser delivery paths","source_count":8,"source_link_count":8,"next_action":"Sharpen the buyer, pain, and paid workflow around verify download upload, protected download, storage permission, and browser delivery paths; 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