# Signing on the Go **URL:** https://altosignpdf.com/community/c/signing-on-the-go/16.md [Latest](https://altosignpdf.com/community/latest.md) · [Categories](https://altosignpdf.com/community/categories.md) · [Tags](https://altosignpdf.com/community/tags.md) --- ## [About the Signing on the Go category](https://altosignpdf.com/community/t/about-the-signing-on-the-go-category/18)
**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-signing-on-the-go-category/18 "2026-10-28T14:22:15Z")
PDF tasks when all you have is a phone. PDFs on the web: uploads, links and email. --- ## [Has anyone managed to improve pdf text quality online free?](https://altosignpdf.com/community/t/has-anyone-managed-to-improve-pdf-text-quality-online-free/77)
**Author:** [@ava\_bulls](https://altosignpdf.com/community/u/ava_bulls)\ **Replies:** 5\ **Last updated:** [November 8, 2026, 11:23am UTC](https://altosignpdf.com/community/t/has-anyone-managed-to-improve-pdf-text-quality-online-free/77 "2026-11-08T11:23:29Z")
My scanned lecture handout is blurry and half the letters are broken, so searching or copying the text barely works. I’m on a locked work laptop and can’t install anything. Has anyone improved the text quality for free? --- ## [How to send multiple pdf files in one email for a client?](https://altosignpdf.com/community/t/how-to-send-multiple-pdf-files-in-one-email-for-a-client/97)
**Author:** [@MasonTaylor](https://altosignpdf.com/community/u/MasonTaylor)\ **Replies:** 1\ **Last updated:** [November 8, 2026, 10:29am UTC](https://altosignpdf.com/community/t/how-to-send-multiple-pdf-files-in-one-email-for-a-client/97 "2026-11-08T10:29:59Z")
I’m sending a client several PDF invoices and project documents, but I’m not sure how to include them all in one email without making it confusing. What’s the best way to handle it? --- ## [How do you compare two pdf documents on a phone?](https://altosignpdf.com/community/t/how-do-you-compare-two-pdf-documents-on-a-phone/81)
**Author:** [@SarcasticSteel07](https://altosignpdf.com/community/u/SarcasticSteel07)\ **Replies:** 4\ **Last updated:** [November 8, 2026, 5:53am UTC](https://altosignpdf.com/community/t/how-do-you-compare-two-pdf-documents-on-a-phone/81 "2026-11-08T05:53:18Z")
I got two versions of the same contract as PDF files and need to spot what changed between them, but I’m only on my Android phone right now. Is there any way to check the differences without a laptop? --- ## [Can someone explain how do you sign a PDF electronically from my phone?](https://altosignpdf.com/community/t/can-someone-explain-how-do-you-sign-a-pdf-electronically-from-my-phone/76)
**Author:** [@JackMurray](https://altosignpdf.com/community/u/JackMurray)\ **Replies:** 5\ **Last updated:** [November 8, 2026, 5:38am UTC](https://altosignpdf.com/community/t/can-someone-explain-how-do-you-sign-a-pdf-electronically-from-my-phone/76 "2026-11-08T05:38:16Z")
I need to add my signature to a PDF on my phone before sending it back today, but I’m not sure what counts as an electronic signature. Can someone explain how it works? --- ## [Can you combine PDF files on a phone without installing anything?](https://altosignpdf.com/community/t/can-you-combine-pdf-files-on-a-phone-without-installing-anything/80)
**Author:** [@BrianWhite](https://altosignpdf.com/community/u/BrianWhite)\ **Replies:** 4\ **Last updated:** [November 8, 2026, 12:08am UTC](https://altosignpdf.com/community/t/can-you-combine-pdf-files-on-a-phone-without-installing-anything/80 "2026-11-08T00:08:24Z")
I need to merge a few PDF files into one document, but I’m on my Android phone and my storage is almost full, so I really can’t add another app. Is there any way to do this without installing anything? --- ## [Does anyone know how to make pdf hyperlink clickable on mobile?](https://altosignpdf.com/community/t/does-anyone-know-how-to-make-pdf-hyperlink-clickable-on-mobile/70)
**Author:** [@Alice\_21](https://altosignpdf.com/community/u/Alice_21)\ **Replies:** 6\ **Last updated:** [November 7, 2026, 11:08pm UTC](https://altosignpdf.com/community/t/does-anyone-know-how-to-make-pdf-hyperlink-clickable-on-mobile/70 "2026-11-07T23:08:13Z")
I added a hyperlink to a PDF and it works fine on my laptop, but when I open the same file on my phone the link just isn’t clickable. Is there a trick to making PDF links work on mobile? --- ## [Can I keep my pdf cloud files synced across devices?](https://altosignpdf.com/community/t/can-i-keep-my-pdf-cloud-files-synced-across-devices/84)
**Author:** [@Joshua1970](https://altosignpdf.com/community/u/Joshua1970)\ **Replies:** 3\ **Last updated:** [November 7, 2026, 4:23pm UTC](https://altosignpdf.com/community/t/can-i-keep-my-pdf-cloud-files-synced-across-devices/84 "2026-11-07T16:23:16Z")
I keep my PDF files for work on my laptop, but I also need to open and annotate them on my phone and a tablet. Is there a way to have them stay up to date on all my devices automatically, without emailing myself copies e… --- ## [Why is my PDF not opening on my phone before my deadline?](https://altosignpdf.com/community/t/why-is-my-pdf-not-opening-on-my-phone-before-my-deadline/54)
**Author:** [@NoahJenkins](https://altosignpdf.com/community/u/NoahJenkins)\ **Replies:** 7\ **Last updated:** [November 7, 2026, 2:38pm UTC](https://altosignpdf.com/community/t/why-is-my-pdf-not-opening-on-my-phone-before-my-deadline/54 "2026-11-07T14:38:25Z")
I need to email a PDF for a client meeting in an hour, but it just spins and never opens on my Android phone. Any idea why that keeps happening? --- ## [I'm stuck - how to reduce size of PDF on mobile?](https://altosignpdf.com/community/t/im-stuck-how-to-reduce-size-of-pdf-on-mobile/50)
**Author:** [@catherine1997](https://altosignpdf.com/community/u/catherine1997)\ **Replies:** 8\ **Last updated:** [November 6, 2026, 10:53pm UTC](https://altosignpdf.com/community/t/im-stuck-how-to-reduce-size-of-pdf-on-mobile/50 "2026-11-06T22:53:23Z")
Ok so I’ve got a 30-page scanned form that I need to send through an online portal, but it’s over the 10 MB limit by a lot. I’m on my phone right now and don’t have a computer nearby, and I’m honestly not sure what my op… --- ## [How can I conver to pdf on my phone quickly?](https://altosignpdf.com/community/t/how-can-i-conver-to-pdf-on-my-phone-quickly/52)
**Author:** [@kenneth\_1980](https://altosignpdf.com/community/u/kenneth_1980)\ **Replies:** 8\ **Last updated:** [November 6, 2026, 6:38am UTC](https://altosignpdf.com/community/t/how-can-i-conver-to-pdf-on-my-phone-quickly/52 "2026-11-06T06:38:16Z")
I’m trying to turn a handful of photos of handwritten notes into one PDF on my phone, and I need it done in the next ten minutes before I upload it to the class portal. The photos are big and I’m worried the file ends up… --- ## [Is there a simple way to erase in pdf on my phone?](https://altosignpdf.com/community/t/is-there-a-simple-way-to-erase-in-pdf-on-my-phone/42)
**Author:** [@OliviaRichardson](https://altosignpdf.com/community/u/OliviaRichardson)\ **Replies:** 9\ **Last updated:** [November 5, 2026, 11:53pm UTC](https://altosignpdf.com/community/t/is-there-a-simple-way-to-erase-in-pdf-on-my-phone/42 "2026-11-05T23:53:18Z")
I need to erase a few lines in a PDF before forwarding it, but on my phone the apps I tried only let me draw or highlight. Is there a simple way to remove text? --- ## [Can anyone tell me how to scan PDF for virus on my phone?](https://altosignpdf.com/community/t/can-anyone-tell-me-how-to-scan-pdf-for-virus-on-my-phone/48)
**Author:** [@Helen\_99](https://altosignpdf.com/community/u/Helen_99)\ **Replies:** 8\ **Last updated:** [November 5, 2026, 2:38pm UTC](https://altosignpdf.com/community/t/can-anyone-tell-me-how-to-scan-pdf-for-virus-on-my-phone/48 "2026-11-05T14:38:19Z")
I received a random invoice PDF in my email today and I am too scared to open it on my Android phone in case it has malware. Is there an easy way to check a PDF file for viruses directly on mobile before downloading or o… --- ## [How can I make this PDF convert to image on mobile?](https://altosignpdf.com/community/t/how-can-i-make-this-pdf-convert-to-image-on-mobile/38)
**Author:** [@BlakeMartin](https://altosignpdf.com/community/u/BlakeMartin)\ **Replies:** 9\ **Last updated:** [November 3, 2026, 11:53pm UTC](https://altosignpdf.com/community/t/how-can-i-make-this-pdf-convert-to-image-on-mobile/38 "2026-11-03T23:53:19Z")
I’m trying to get a scanned PDF turned into regular image files, but I’m stuck doing it on my phone. It’s a 12-page permit form for a job application due tomorrow, and I need separate pages as JPGs to upload to the porta… --- ## [How can I open pdf online from my phone quickly?](https://altosignpdf.com/community/t/how-can-i-open-pdf-online-from-my-phone-quickly/32)
**Author:** [@WillowBailey](https://altosignpdf.com/community/u/WillowBailey)\ **Replies:** 10\ **Last updated:** [November 3, 2026, 4:24am UTC](https://altosignpdf.com/community/t/how-can-i-open-pdf-online-from-my-phone-quickly/32 "2026-11-03T04:24:32Z")
I keep getting PDF links on my Android phone and want to view them quickly in the browser without downloading or installing anything. What’s the easiest way to open a PDF online from a phone?