Synthetic Preflight Notebook

Book Preflight Studio · Synthetic demo data — no AI call · revision 1

synthetic-preflight-demo.epub · EPUB 3.0 · 5 resources

Input SHA-256: 02df6dc57cfd41046e3698a9e9149f47a69d528ab2c11c0d03723481f6cac19b
Coverage: PARTIAL

Built-in checks do not replace EPUBCheck, Ace or manual review. No publication approval, perfect rendering or accessibility certification is guaranteed. AI suggestions are not automatic repairs.

Tools and coverage

Findings and human decisions

Severity/originLocationFinding/explanationDecision/history
ERROR
BUILTIN 		mimetype:
MIMETYPE_FIRST		The mimetype entry is not the first ZIP entry.

The EPUB container marker must be first.

Approve the container-only repair.

UNREVIEWED

    ERROR
    BUILTIN     		mimetype:
    MIMETYPE_STORED    		The mimetype entry is compressed or has an extra field.

    OCF requires an uncompressed marker without ZIP extra fields.

    Approve the container-only repair.

    		UNREVIEWED

      ERROR
      BUILTIN       		mimetype:
      MIMETYPE_CONTENT      		The mimetype bytes are not exactly application/epub+zip.

      Padding and BOM are not allowed in the reserved marker.

      Approve removal of the proven padding.

      		UNREVIEWED

        ERROR
        BUILTIN         		EPUB/chapter-1.xhtml:1
        LINK_MISSING        		Internal reference is missing: EPUB/missing-chapter.xhtml

        The referenced resource is not in the snapshot.

        Restore the intended target in the EPUB editor.

        		UNREVIEWED

          ERROR
          EPUBCHECK ERROR          		./input.epub:
          PKG-006          		Mimetype file entry is missing or is not the first file in the archive.

          EPUBCheck 5.3.0; COMPLETED; LOCAL_SNAPSHOT

          Review this finding in the source editor.

          		UNREVIEWED

            ERROR
            EPUBCHECK ERROR            		./input.epub:
            PKG-007            		Mimetype file should only contain the string "application/epub+zip" and should not be compressed.

            EPUBCheck 5.3.0; COMPLETED; LOCAL_SNAPSHOT

            Review this finding in the source editor.

            		UNREVIEWED

              ERROR
              EPUBCHECK ERROR              		EPUB/chapter-1.xhtml:1
              RSC-007              		Referenced resource "EPUB/missing-chapter.xhtml" could not be found in the EPUB.

              EPUBCheck 5.3.0; COMPLETED; LOCAL_SNAPSHOT

              Review this finding in the source editor.

              		UNREVIEWED

                Repair proposals

                Place mimetype first

                SAFE_AUTOFIX · PROPOSED

                ZIP order: position 5 → position 1; other resources unchanged.

                Discard the proposed copy; the original file and snapshot are unchanged.

                Store mimetype without compression

                SAFE_AUTOFIX · PROPOSED

                mimetype: compression 8 → 0 (STORED); local extra-field bytes 0 → 0.

                Discard the proposed copy; the original file and snapshot are unchanged.

                Remove mimetype padding

                SAFE_AUTOFIX · PROPOSED

                mimetype bytes: "application/epub+zip\n" → "application/epub+zip"

                Discard the proposed copy; the original file and snapshot are unchanged.

                Review broken link in EPUB/chapter-1.xhtml

                MANUAL_ACTION_REQUIRED · PROPOSED

                Unresolved target: missing-chapter.xhtml; no automatic change.

                Discard the proposed copy; the original file and snapshot are unchanged.

                Manual checklist