# Annotations & Notes **URL:** https://pdfbookslib.com/discussions/c/reading-pdfs/annotations-notes/19.md [Latest](https://pdfbookslib.com/discussions/latest.md) · [Categories](https://pdfbookslib.com/discussions/categories.md) · [Tags](https://pdfbookslib.com/discussions/tags.md) --- ## [About the Annotations & Notes category](https://pdfbookslib.com/discussions/t/about-the-annotations-notes-category/21)
**Author:** [@system](https://pdfbookslib.com/discussions/u/system)\ **Replies:** 0\ **Last updated:** [October 28, 2026, 2:22pm UTC](https://pdfbookslib.com/discussions/t/about-the-annotations-notes-category/21 "2026-10-28T14:22:36Z")
Changing text, adding notes, highlights and watermarks. --- ## [What does redact pdf meaning mean when editing a file?](https://pdfbookslib.com/discussions/t/what-does-redact-pdf-meaning-mean-when-editing-a-file/124)
**Author:** [@kyle\_foster](https://pdfbookslib.com/discussions/u/kyle_foster)\ **Replies:** 4\ **Last updated:** [November 13, 2026, 11:21pm UTC](https://pdfbookslib.com/discussions/t/what-does-redact-pdf-meaning-mean-when-editing-a-file/124 "2026-11-13T23:21:45Z")
My boss told me to redact a 5-page PDF before emailing it, but I’m confused about what that actually does. Does redacting just black out the text, or is the private data completely removed? --- ## [How can I find out how to remove highlight from pdf files?](https://pdfbookslib.com/discussions/t/how-can-i-find-out-how-to-remove-highlight-from-pdf-files/139)
**Author:** [@emily.1980](https://pdfbookslib.com/discussions/u/emily.1980)\ **Replies:** 1\ **Last updated:** [November 13, 2026, 10:57pm UTC](https://pdfbookslib.com/discussions/t/how-can-i-find-out-how-to-remove-highlight-from-pdf-files/139 "2026-11-13T22:57:14Z")
A classmate sent me some lecture notes with bright yellow marks all over the pages, but clicking on them does nothing on my laptop. Is there a simple way to clear these highlights from the PDF? --- ## [How can I add a watermark to PDF invoices?](https://pdfbookslib.com/discussions/t/how-can-i-add-a-watermark-to-pdf-invoices/114)
**Author:** [@Saoirse92](https://pdfbookslib.com/discussions/u/Saoirse92)\ **Replies:** 6\ **Last updated:** [November 13, 2026, 10:36pm UTC](https://pdfbookslib.com/discussions/t/how-can-i-add-a-watermark-to-pdf-invoices/114 "2026-11-13T22:36:47Z")
I need to stamp a paid watermark across about fifty client PDF invoices this month. Is there an easy way to apply it across all of them without manually editing every single file? --- ## [How can I edit pdf on phone before this deadline?](https://pdfbookslib.com/discussions/t/how-can-i-edit-pdf-on-phone-before-this-deadline/97)
**Author:** [@ShadowWanderer](https://pdfbookslib.com/discussions/u/ShadowWanderer)\ **Replies:** 9\ **Last updated:** [November 13, 2026, 12:06pm UTC](https://pdfbookslib.com/discussions/t/how-can-i-edit-pdf-on-phone-before-this-deadline/97 "2026-11-13T12:06:52Z")
I’m on my phone and need to fill in and tweak a PDF form before the submission portal closes tonight. The file is a scanned application with a few typos in my name and a date I need to change, and I can only use my phone… --- ## [What does flatten pdf do to my form fields?](https://pdfbookslib.com/discussions/t/what-does-flatten-pdf-do-to-my-form-fields/102)
**Author:** [@photo\_uncle](https://pdfbookslib.com/discussions/u/photo_uncle)\ **Replies:** 8\ **Last updated:** [November 13, 2026, 11:51am UTC](https://pdfbookslib.com/discussions/t/what-does-flatten-pdf-do-to-my-form-fields/102 "2026-11-13T11:51:54Z")
I heard I should flatten my PDF form before submitting it, but does that actually lock my entered text in place or just erase the fillable fields completely? I am terrified of breaking it. --- ## [How do I edit text in a PDF for my assignment?](https://pdfbookslib.com/discussions/t/how-do-i-edit-text-in-a-pdf-for-my-assignment/107)
**Author:** [@Jonathan1981](https://pdfbookslib.com/discussions/u/Jonathan1981)\ **Replies:** 7\ **Last updated:** [November 13, 2026, 11:36am UTC](https://pdfbookslib.com/discussions/t/how-do-i-edit-text-in-a-pdf-for-my-assignment/107 "2026-11-13T11:36:46Z")
I have a PDF worksheet from my professor and need to change some of the text in it before submitting my assignment on Friday. I’m on a Windows laptop and can’t figure out how to type over the existing words. --- ## [Can i send a pdf through api without losing any formatting?](https://pdfbookslib.com/discussions/t/can-i-send-a-pdf-through-api-without-losing-any-formatting/117)
**Author:** [@hiking\_bro](https://pdfbookslib.com/discussions/u/hiking_bro)\ **Replies:** 5\ **Last updated:** [November 13, 2026, 10:06am UTC](https://pdfbookslib.com/discussions/t/can-i-send-a-pdf-through-api-without-losing-any-formatting/117 "2026-11-13T10:06:51Z")
I’m trying to send a PDF through an API for a work process, and the fonts and page breaks need to stay exactly as they are. Is that possible? --- ## [Does anyone know how to put watermark in pdf?](https://pdfbookslib.com/discussions/t/does-anyone-know-how-to-put-watermark-in-pdf/81)
**Author:** [@onyx\_legend](https://pdfbookslib.com/discussions/u/onyx_legend)\ **Replies:** 10\ **Last updated:** [November 13, 2026, 6:37am UTC](https://pdfbookslib.com/discussions/t/does-anyone-know-how-to-put-watermark-in-pdf/81 "2026-11-13T06:37:28Z")
I need to stamp a “confidential” mark across every page of a 25-page PDF before I email it to a client tomorrow morning. I’m on a Windows laptop and have no idea where to start, so does anyone know how this is done? --- ## [Can I edit on PDF online from my phone?](https://pdfbookslib.com/discussions/t/can-i-edit-on-pdf-online-from-my-phone/120)
**Author:** [@AngelaPhillips](https://pdfbookslib.com/discussions/u/AngelaPhillips)\ **Replies:** 4\ **Last updated:** [November 12, 2026, 11:21pm UTC](https://pdfbookslib.com/discussions/t/can-i-edit-on-pdf-online-from-my-phone/120 "2026-11-12T23:21:46Z")
I have a PDF form saved on my iPhone and need to fix a date before sending it tonight. Is editing a PDF online from my phone practical, or will the layout get messed up? --- ## [How do I pdf tax edit my return before the deadline?](https://pdfbookslib.com/discussions/t/how-do-i-pdf-tax-edit-my-return-before-the-deadline/130)
**Author:** [@Ronan\_2002](https://pdfbookslib.com/discussions/u/Ronan_2002)\ **Replies:** 2\ **Last updated:** [November 12, 2026, 10:51pm UTC](https://pdfbookslib.com/discussions/t/how-do-i-pdf-tax-edit-my-return-before-the-deadline/130 "2026-11-12T22:51:51Z")
I have my tax return saved as a PDF and need to fix a couple entries before the deadline this week but can’t edit it on my laptop without issues. --- ## [Who knows how to take a PDF and make it editable?](https://pdfbookslib.com/discussions/t/who-knows-how-to-take-a-pdf-and-make-it-editable/66)
**Author:** [@Jeffrey08](https://pdfbookslib.com/discussions/u/Jeffrey08)\ **Replies:** 11\ **Last updated:** [November 12, 2026, 10:21pm UTC](https://pdfbookslib.com/discussions/t/who-knows-how-to-take-a-pdf-and-make-it-editable/66 "2026-11-12T22:21:47Z")
I have a PDF form I need to fill in, but the text won’t let me type or change anything. Is there a way to turn it into an editable document without messing up the layout? --- ## [How do you embed fonts in a pdf before submitting my thesis?](https://pdfbookslib.com/discussions/t/how-do-you-embed-fonts-in-a-pdf-before-submitting-my-thesis/79)
**Author:** [@SaltySteel99](https://pdfbookslib.com/discussions/u/SaltySteel99)\ **Replies:** 10\ **Last updated:** [November 12, 2026, 2:37pm UTC](https://pdfbookslib.com/discussions/t/how-do-you-embed-fonts-in-a-pdf-before-submitting-my-thesis/79 "2026-11-12T14:37:12Z")
I finished converting my thesis to PDF but I’m worried the fonts aren’t embedded and it might cause issues on the university system. My deadline is Friday so I need to get this sorted quickly. How do I check and fix the … --- ## [Is it possible to save a pdf in black and white?](https://pdfbookslib.com/discussions/t/is-it-possible-to-save-a-pdf-in-black-and-white/76)
**Author:** [@queen](https://pdfbookslib.com/discussions/u/queen)\ **Replies:** 10\ **Last updated:** [November 11, 2026, 2:52pm UTC](https://pdfbookslib.com/discussions/t/is-it-possible-to-save-a-pdf-in-black-and-white/76 "2026-11-11T14:52:13Z")
I have a 30-page PDF report full of color charts that I need to send to a client, and the file size is currently huge. I tried looking through the standard save settings on my Mac, but I only see options to reduce qualit… --- ## [Is there a decent pdf editor without subscription that actually works offline?](https://pdfbookslib.com/discussions/t/is-there-a-decent-pdf-editor-without-subscription-that-actually-works-offline/85)
**Author:** [@goofy\_gremlin](https://pdfbookslib.com/discussions/u/goofy_gremlin)\ **Replies:** 9\ **Last updated:** [November 10, 2026, 12:06pm UTC](https://pdfbookslib.com/discussions/t/is-there-a-decent-pdf-editor-without-subscription-that-actually-works-offline/85 "2026-11-10T12:06:51Z")
I have to make a few edits to a scanned lease PDF on a locked-down work laptop and don’t want another subscription. Is there an offline PDF editor that actually works without monthly fees? --- ## [I'm stuck converting color PDF to black and white - any tips?](https://pdfbookslib.com/discussions/t/im-stuck-converting-color-pdf-to-black-and-white-any-tips/71)
**Author:** [@lurker\_379804](https://pdfbookslib.com/discussions/u/lurker_379804)\ **Replies:** 10\ **Last updated:** [November 9, 2026, 11:07pm UTC](https://pdfbookslib.com/discussions/t/im-stuck-converting-color-pdf-to-black-and-white-any-tips/71 "2026-11-09T23:07:07Z")
I need to print a 30-page report but our office printer only does black and white and the color charts come out washed out. Any way to convert the PDF itself to grayscale first? --- ## [Why can't I highlight in PDF lecture notes for my exam?](https://pdfbookslib.com/discussions/t/why-cant-i-highlight-in-pdf-lecture-notes-for-my-exam/49)
**Author:** [@john\_turner](https://pdfbookslib.com/discussions/u/john_turner)\ **Replies:** 11\ **Last updated:** [November 2, 2026, 10:21pm UTC](https://pdfbookslib.com/discussions/t/why-cant-i-highlight-in-pdf-lecture-notes-for-my-exam/49 "2026-11-02T22:21:47Z")
My exam is next week and I’m going through the lecture slides my professor uploaded as PDFs, but the highlight tool just won’t do anything on them. I tried on my laptop and my phone, same problem. Is it because they’re s…