Edit PDFs on Android in Chrome, no app
Edit a PDF on Android in Chrome with no app install. What the Google Drive viewer will not do, where Chrome saves the file, and how to send it back in Gmail or WhatsApp.
Why the Play Store route disappoints
Search the Play Store for a PDF editor and you get three kinds of result. Readers with ads in them. Apps that edit but want a monthly subscription and an account before the export. And apps that ask for access to all files on the device before they will open one document.
A browser tab asks for one file, the one you point it at, and gives it back when you are done. There is nothing installed, nothing running in the background, and nothing to uninstall later.
Google Drive shows PDFs. It does not edit them.
Drive's Android viewer displays a PDF and lets you leave comments. There is no text editing in it, no page reordering, and no way to fill a form field reliably.
The nearest thing Drive offers is Open with, then Google Docs, which runs recognition over the file and hands you a Doc. It reads the words out, and it throws the document away: columns collapse into one, tables break apart, images drift to the end, and the fonts are gone. Useful when you only want the text. Wrong when the thing has to keep looking like the thing.
How to edit a PDF in Chrome on Android
Open FileHook in Chrome and tap the upload card. Android's picker gives you Files, Recent, Photos, Camera and Drive down the side, so you can pull the PDF from device storage or straight out of a cloud drive.
Tap the line you want to change and type over it. The rest of the toolbar is the same one a laptop gets: text, whiteout, form fields, signatures, highlight and underline, shapes, images, links, and page moves. Tap Download and the finished PDF is built on the phone.
Chrome puts the file in the Download folder
The saved PDF goes to internal storage under Download, which shows up as Downloads in Files by Google, or as My Files then Downloads on a Samsung. Chrome also keeps its own list under the three dot menu, Downloads, which is the quickest way to reach it right after saving. One thing to check on a work phone: if a backup or gallery app is set to sync the Download folder, the edited PDF goes up with it.
Sending it back through Gmail or WhatsApp
Gmail: compose the reply, tap the paperclip, Attach file, then Downloads, then the file. Android's picker sees the Download folder without any extra permission.
WhatsApp: tap the paperclip, choose Document, then Browse, then Downloads. A PDF that arrived through WhatsApp in the first place lives inside the WhatsApp Documents folder, which the picker can reach, though tapping the message and downloading it again is usually quicker than digging for it.
Two things Android already does well
Making PDFs is one. Android's print system has a Save as PDF destination, so the share menu in Chrome, Gmail or almost any app can turn what is on screen into a PDF with no app installed. Handy for a ticket, a receipt or a web page.
Scanning is the other. The Google Drive app has a camera button that photographs a page, straightens it and saves it as a PDF, and most phone camera apps now detect a document too. What comes out is a picture of the page with no text in it, which is why a freshly scanned form cannot be clicked and retyped. Type on top of it instead, or run recognition over it first.
Tablets and foldables get the full layout
On a 10 inch tablet or an unfolded foldable, the page rail and the toolbar both fit on screen at once, which is close to the laptop experience. A stylus makes signing and freehand markup much better than a fingertip. Samsung's S Pen works the same as any other pointer here, with no special app.
What stays on the phone
The PDF is read into the Chrome tab from wherever you picked it. It is not uploaded, no account is created, and nothing is stored after you close the tab. Sharing the finished document happens through Android's own share sheet, which means it goes where you send it and nowhere else. The one deliberate exception on the site is the Share button in the editor, which uploads the finished file to create a link others can open, and an anonymous share deletes itself after two hours.
Free limits, and the honest one
Free use covers 10 finished files a day across every tool here, resetting at midnight UTC, with a 50 MB ceiling per file and no watermark on anything you export. The real limit on Android is memory rather than any rule of ours: a phone browser has far less headroom than a laptop, so a large scanned document can make Chrome reload the tab. If your file is big and mostly images, compress or split it before you start editing.
FAQ
Is there a free PDF editor app for Android?
You can skip the install. FileHook runs in Chrome, edits the real text rather than drawing over it, and does not come with the ads, accounts or all-files permissions that most free Android PDF apps ask for.
Can I edit a PDF in Google Drive?
Drive views and comments only. Converting it to a Google Doc gets you the words but destroys the layout, so it is the wrong move whenever the document has to keep its shape.
Where does the edited PDF save on Android?
Into internal storage under Download, which appears as Downloads in Files by Google or My Files on a Samsung. Chrome's own Downloads list is the fastest way back to it.
How do I attach the edited PDF in WhatsApp?
Tap the paperclip in the chat, choose Document, then Browse, then Downloads. The file you just saved is at the top of the list.
Does it work on a Samsung tablet?
A tablet is the best Android surface for this. The full toolbar and the page rail both fit, and the S Pen makes signatures and freehand marks far more precise than a finger.
Can I sign a PDF on an Android phone?
The Sign tool takes a signature drawn with a finger or stylus, a typed name in a handwriting style, or a photo of your paper signature. Initials get their own tab, and the signature is kept for the next document.