# Organize & Compress **URL:** https://altosignpdf.com/community/c/organize-compress/15.md [Latest](https://altosignpdf.com/community/latest.md) · [Categories](https://altosignpdf.com/community/categories.md) · [Tags](https://altosignpdf.com/community/tags.md) --- ## [About the Organize & Compress category](https://altosignpdf.com/community/t/about-the-organize-compress-category/17)
**Author:** [@system](https://altosignpdf.com/community/u/system)\ **Replies:** 0\ **Last updated:** [October 28, 2026, 2:22pm UTC](https://altosignpdf.com/community/t/about-the-organize-compress-category/17 "2026-10-28T14:22:14Z")
Combining, splitting, reordering and rotating pages. Upload limits, file size and compression tricks. --- ## [Can anyone recommend a PDF compressor to 15kb for invoices?](https://altosignpdf.com/community/t/can-anyone-recommend-a-pdf-compressor-to-15kb-for-invoices/72)
**Author:** [@ottawa10](https://altosignpdf.com/community/u/ottawa10)\ **Replies:** 6\ **Last updated:** [November 8, 2026, 10:53am UTC](https://altosignpdf.com/community/t/can-anyone-recommend-a-pdf-compressor-to-15kb-for-invoices/72 "2026-11-08T10:53:16Z")
I’ve been reading a long PDF on my phone late at night and the bright white pages hurt my eyes. Dark mode doesn’t change the document itself. Is there a quick way to invert the colors? --- ## [Has anyone explained how to combine two pdfs yet?](https://altosignpdf.com/community/t/has-anyone-explained-how-to-combine-two-pdfs-yet/96)
**Author:** [@SineadAnnaMoore](https://altosignpdf.com/community/u/SineadAnnaMoore)\ **Replies:** 1\ **Last updated:** [November 8, 2026, 4:29am UTC](https://altosignpdf.com/community/t/has-anyone-explained-how-to-combine-two-pdfs-yet/96 "2026-11-08T04:29:59Z")
I’ve been scrolling through threads and still can’t figure out how to merge two PDFs into one. I need to combine a signed form with an ID scan for a rental application due tomorrow. Anyone? --- ## [How to save pdf rotated so it stops opening sideways?](https://altosignpdf.com/community/t/how-to-save-pdf-rotated-so-it-stops-opening-sideways/46)
**Author:** [@bored\_gremlin](https://altosignpdf.com/community/u/bored_gremlin)\ **Replies:** 9\ **Last updated:** [November 7, 2026, 11:53pm UTC](https://altosignpdf.com/community/t/how-to-save-pdf-rotated-so-it-stops-opening-sideways/46 "2026-11-07T23:53:20Z")
Every time I open this 15-page scanned document on my laptop, it defaults to sideways orientation. I can turn it right-side up to read it, but how do I actually save that rotation permanently? --- ## [How can I move pages in pdf without losing bookmarks?](https://altosignpdf.com/community/t/how-can-i-move-pages-in-pdf-without-losing-bookmarks/95)
**Author:** [@Violet\_92](https://altosignpdf.com/community/u/Violet_92)\ **Replies:** 1\ **Last updated:** [November 7, 2026, 10:30pm UTC](https://altosignpdf.com/community/t/how-can-i-move-pages-in-pdf-without-losing-bookmarks/95 "2026-11-07T22:30:00Z")
I have an 80-page report, but every time I try rearranging the pages, all my existing bookmarks and outline links completely vanish. How do I reorder pages while keeping the document bookmarks intact? --- ## [Does anyone know how to combine 2 PDFs into 1 for my assignment?](https://altosignpdf.com/community/t/does-anyone-know-how-to-combine-2-pdfs-into-1-for-my-assignment/61)
**Author:** [@novamelbourne](https://altosignpdf.com/community/u/novamelbourne)\ **Replies:** 7\ **Last updated:** [November 7, 2026, 5:23am UTC](https://altosignpdf.com/community/t/does-anyone-know-how-to-combine-2-pdfs-into-1-for-my-assignment/61 "2026-11-07T05:23:13Z")
I have to email a 12-page proposal that people can view but not edit, and a normal save still lets them change the text. Has anyone gotten a read only PDF to actually stick? --- ## [How can I compress pdf to 800kb for this upload?](https://altosignpdf.com/community/t/how-can-i-compress-pdf-to-800kb-for-this-upload/44)
**Author:** [@dark](https://altosignpdf.com/community/u/dark)\ **Replies:** 9\ **Last updated:** [November 6, 2026, 11:53pm UTC](https://altosignpdf.com/community/t/how-can-i-compress-pdf-to-800kb-for-this-upload/44 "2026-11-06T23:53:20Z")
My PDF needs to be under 800kb for this upload but it’s way bigger right now. I already tried lowering the quality and it still won’t go through. How do I get it small enough? --- ## [Is there a way to compress a pdf?](https://altosignpdf.com/community/t/is-there-a-way-to-compress-a-pdf/59)
**Author:** [@user\_x](https://altosignpdf.com/community/u/user_x)\ **Replies:** 7\ **Last updated:** [November 6, 2026, 5:23pm UTC](https://altosignpdf.com/community/t/is-there-a-way-to-compress-a-pdf/59 "2026-11-06T17:23:13Z")
My PDF is too big to upload because of the size limit on the portal, and nothing I’ve tried has made it smaller yet. Is there a way to compress it?