Image to PDF - PDF Converter

Review by eFreeware

Most document apps on Android do one thing and do it well, which is why phones end up with a folder full of them. Image to PDF - PDF Converter takes the opposite approach: merging, splitting, resizing, signing, password handling and QR codes all live behind a single install. That bundling is the most distinctive thing about it, and it is the reason the app exists at all.

It comes from BestAppsHub, sits in the Business category, and has passed a million installs since its release in May 2023. I'd expect it to appeal most to people who deal with paperwork away from a desk: a small business owner sending quotes, a freelancer returning signed contracts, a student assembling scanned pages before a deadline. If your document work happens on a computer, the case for this app is weaker.

What you get after installing

The app is built around conversion rather than creation. It takes other file formats and turns them into PDFs, and it takes PDFs and turns them into other formats. Images are the most obvious input, and the recent update leans hard into that: JPG, PNG and similar formats can be turned into PDFs, and several photos can be merged into one document rather than converted one at a time.

Around that core sit the editing tools. There is a text editor for changing text, an image converter, a resize option, and the ability to add an image into a file. Merging combines documents; splitting and inverting break them apart or rearrange them. None of this is exotic, but having it in one place is the point.

The developer pitches the app as a way to avoid installing separate tools for separate jobs, and that framing is fair. The trade-off is that a suite like this rarely matches a dedicated app for any single task. What you gain in convenience you may give up in depth, and that is the central question anyone weighing this app has to answer for themselves.

Locking, signing and generating codes

Two features stand out because they deal with documents that matter. The first is password handling: the app can apply a password to a file and remove one. The second is fill and sign, which lets you complete a form and add an electronic signature. Between them, that covers the two most common reasons a PDF leaves your phone and goes to someone else.

There is also a QR code generator, which sits a little apart from the document tools but fits the same pattern of small utilities in one package. I'd expect it to be useful for pointing people to a link or a contact detail without typing anything out.

The app is free to install, carries ads, and offers in-app purchases. That combination is worth noting before you commit to it as your main document tool. The developer's own note says the app uses device administrator permission, requires file access because it converts between formats, and needs no private data permissions for merging. Those are the permissions the developer lists, and they line up with what the features do.

The recent image-to-PDF update

The October 2026 update is clearly aimed at the most common job people bring to an app like this. Images can be converted to PDFs, multiple image formats are supported, and several photos can be combined into a single document. For anyone who photographs receipts, forms or handwritten pages and needs them in a tidy file, that is the headline feature.

The update also mentions a cleaner interface for conversion, faster processing, and general stability fixes.

What the update doesn't change is the nature of the app. It remains a collection of utilities rather than a single deep tool, and the image-to-PDF path is one of several rather than the whole product.

What the app asks of you

A few things are worth weighing before you install. The app is free but ad-supported and includes in-app purchases. The developer also notes that it uses device administrator permission, which is a broader grant than most document tools request.

File access is required for the conversion features to work at all, which makes sense given that the app reads one format and writes another. The developer separately notes that merging needs no private data permissions.

The other consideration is breadth itself. When one app handles merging, splitting, resizing, signing, passwords, QR codes and conversion, each individual tool is likely to be simpler than a specialist alternative. That is the honest trade for convenience, and it is the main reason someone might keep a dedicated tool alongside this one.

Who this fits best

The people who get the most from this app are the ones whose document work is occasional but varied. A landlord preparing a lease, a parent assembling school forms, a tradesperson sending an invoice with photos attached: these are jobs that need two or three of the app's tools in a single sitting, which is exactly where a suite beats a folder of single-purpose apps.

It also suits anyone who works from a phone by necessity rather than choice, and who wants a signature, a password and a merged file without switching between three different tools mid-task. The developer's argument, that juggling separate apps for separate features is a chore, holds up best for that group.

Where it fits less well is in heavy, repetitive document work. If you process large batches of files or need precise control over layout and formatting, the individual tools here are likely to feel shallow next to software built for that one job. This app is a generalist, and generalists are judged by how often you need more than they offer.

A sensible install for mixed document jobs

Image to PDF - PDF Converter is worth installing if your document needs are broad rather than deep. It covers conversion, merging, splitting, resizing, signing, passwords and QR codes in one place, it has been updated recently with a focus on image-to-PDF work, and it has enough of an install base to suggest the approach resonates.

The reservations are straightforward. It is ad-supported, it offers in-app purchases, and it asks for device administrator permission alongside file access. Anyone uncomfortable with those terms should weigh them carefully, because they are part of the deal rather than optional extras.

My recommendation is for people who handle a handful of documents a week on their phone and want the tools together. If your work is narrow but demanding, a single-purpose app will likely serve you better, and this one's value comes precisely from not being that.

What's new in version 3.9.1

📷 Convert images to high-quality PDFs instantly 🖼️ Support for multiple image formats (JPG, PNG, etc.) 📚 Merge multiple photos into a single PDF 🎨 Clean and simple new UI for fast conversion ⚡ Faster processing & improved performance 📱 Minor bug fixes and stability enhancements