# BettrPDF blog

Canonical page: https://bettrpdf.com/blog  
This file: https://bettrpdf.com/blog.md  
Site index for agents: https://bettrpdf.com/llms.txt

- 2026-10-24: [How to sign a PDF on your iPhone and send it back today, without a printer](https://bettrpdf.com/blog/sign-a-pdf-on-iphone-and-send-it-back.md). The landlord emailed a lease and wants it back today. Here is the two-minute way, with no app and no account to download.
- 2026-10-24: ["You need the owner password to save this document": how to fill a locked PDF form](https://bettrpdf.com/blog/owner-password-cant-save-pdf-form.md). Why government and employer forms block typing on phones, and how to fill them anyway.
- 2026-10-24: [How to fill out and sign a PDF on a Chromebook, for free](https://bettrpdf.com/blog/fill-out-a-pdf-on-a-chromebook.md). School and government PDFs that will not open in the Chromebook viewer, and the way around it.
- 2026-10-24: [How to send a signed PDF back without downloading it](https://bettrpdf.com/blog/send-a-signed-pdf-back-without-downloading.md). The usual round trip is download, fill, save, open email, attach, send. Here is the one-page version.
- 2026-10-19: [Are online signatures legally binding?](https://bettrpdf.com/blog/esign-legal-guide.md). ESIGN, UETA and eIDAS in plain words, and what an audit certificate actually proves.
- 2026-10-19: [How to make a PDF fillable, and why most fillable PDFs are not](https://bettrpdf.com/blog/how-to-make-a-pdf-fillable.md). A box drawn on a page is not a field. What a real form field is, how readers find it, and how to add them in one request.
- 2026-10-19: [How to sign a PDF on iPhone, Android, Mac and Windows](https://bettrpdf.com/blog/how-to-sign-a-pdf-on-any-device.md). The built-in way on each platform, what each one is missing, and when you need a signature request instead.