Your duplex scan produced a 120-page PDF, but half the back pages were actually blank — your originals were one-sided. Now you have 60 useful pages and 60 blanks interleaved between them.
Deleting blank pages is the right cleanup. Flint finds and removes them.
Auto-detect blanks
Open delete PDF pages, drop the file, click 'detect blank pages'. Flint scans every page for content (ignoring scanner noise and minor specks) and flags pages with no meaningful content. Review the flagged pages, confirm, delete. Blank pages disappear; useful pages remain in their original positions.
Manual deletion if auto misses some
Auto-detection works on most clean scans but can miss pages with stray marks or include pages with just a footer. Scroll the thumbnail grid, click any extra pages that are effectively blank, confirm delete. Five seconds per missed page.
Adjust sensitivity
Flint's blank detection has a sensitivity threshold. Stricter detection only flags truly empty pages; looser flags pages with minimal content. For mostly-blank pages with just a page number, looser detection catches them. For scanned documents with lots of margin noise, stricter avoids false positives.
Re-scan if necessary
If blanks aren't really blanks (faint text you missed), edit PDF to inspect closely before deleting. Once deleted, the only recovery is keeping the original file. Always preserve the original until you've verified the deleted version is correct.
FAQ
Does auto-detection work on coloured backgrounds?
Yes — Flint checks for content, not just blank white. A solid coloured page with no text still flags as blank in strict mode.
What about pages with just a logo or watermark?
Strict mode treats them as not-blank. Looser mode flags them. Adjust to your case.
Can I undo a delete?
Within the session, yes. After save, you'd need the original to restore.
Will this affect page numbering?
Pages shift up to fill gaps. Page labels stay with their pages. Bookmarks remap.
Auto-detect, review, delete. Remove blank pages.