Support

Import and inspect

Import a PDF through Android Files. A separate private source copy is made under a unique identity; importing another file with the same name never overwrites it. Select actual page thumbnails or use Page audit to inspect displayed size, MediaBox, effective CropBox, rotation and UserUnit. Mixed sizes compare displayed dimensions to page 1 with a 2 pt tolerance. Crop differences include the box origin.

Create a standard-paper copy

Choose Letter (612 × 792 pt), A4 (about 595.276 × 841.890 pt) or Legal (612 × 1008 pt), and a 0–72 pt margin in 6 pt steps. The visible CropBox content is scaled proportionally, rotated as declared and centered inside the available paper. Every output page uses the chosen MediaBox and zero page rotation. The source file is never rewritten. Even a same-size page can have changed placement when a margin is added.

Normalization uses vector Form XObjects with copied page resources. It copies page content, not the entire document structure. PDFs containing annotations or links, interactive forms/signatures or optional-content layers can be inspected, but normalization is blocked to protect that content. Document bookmarks, tags and metadata are not copied. Content outside the visible crop may remain inside the PDF: this is not redaction. No OCR, PDF/A or print/legal certification is provided. Preview support follows Android’s PDF renderer; inspect exported results.

Save and share

Outputs previews the actual saved PDF, independently of your current paper controls. Saved-run list timestamps follow the device’s local time zone. Save PDF or CSV through Android Files, or open Android’s share chooser. The CSV quotes every field and preserves literal text; import spreadsheet columns as text to avoid formula interpretation. It includes original page boxes, UserUnit, rotation, displayed dimensions, target, margin, scale, placement and source/output SHA-256 checksums. An external provider error may leave an incomplete file; retry and check the saved copy.

Save original PDF exports the unchanged private source bytes. Each share uses an independent temporary copy. Clear cached shares may invalidate old share links; it does not remove sources, saved runs or independent external copies. Delivery depends on the selected recipient app and is not guaranteed by opening the chooser.

Storage and recovery

12 sources; each 1–96 pages and up to 64 MiB; source storage 512 MiB. Up to 24 saved runs, each PDF up to 128 MiB; saved output storage 512 MiB. Share cache 256 MiB. Page sides up to 14400 pt; UserUnit up to 75. Encrypted PDFs are unsupported. Names permit 1–120 characters. Interface language is English or Korean; technical CSV fields and some validation messages stay English.

Saved changes commit to an atomic private index before the visible library is replaced. If it cannot be read, editing is blocked while existing bytes are preserved. Help provides Save unreadable library and Retry opening library. Delete run removes that private run after confirmation. Delete source removes its private source and related runs after confirmation. External copies remain independent. Android cloud backup is disabled; uninstall or clearing app data removes private records. Keep external backups.

Contact

maga40@naver.com · Gobling Company · PDF Page Preflight Android 1.0.0(1). Include the visible error and version. Do not send private PDFs unless needed.