HalfYamJam

Merge PDFs

Upload PDFs (order matters)

Split PDF (range)

Upload a PDF

Start Page

End Page

Compress PDF (lightweight)

Upload a PDF

Use server compression

Level

Client mode performs a lightweight rewrite that may reduce size slightly. Server mode requires Ghostscript and the env flag.

Organizer (reorder / rotate / delete)

Upload a PDF

Order (e.g. 3,1,2 or 1-3,5)

Rotate all

Delete pages (e.g. 2,4-6)

Per-page rotate (e.g. 1:90,3:180) — indexes are in final order

Watermark

Upload a PDF

Text

Size

Opacity

Angle

Mode

Pages (e.g. 1,3-5 — leave blank for all)

Odd pages Even pages

Page Numbers

Upload a PDF

Format

Position

Font size

Margin (px)

Pages (e.g. 1,4-6 — leave blank for all)

Odd pages Even pages

Metadata

Upload a PDF

Title

Author

Subject

Keywords (comma-separated)

Images → PDF

Upload images

Fit mode

Images per page (n-up)

Page size

Pipeline (Watermark → Page Numbers)

Upload a PDF

Uses your current Watermark and Page Number settings. Adjust them above, then run.