How to Scan an ID Card to PDF (Both Sides, On-Device)
Scan an ID card to PDF: both sides on one clean page, in 3 steps, processed on your phone so a sensitive document never touches a server.
Scan, OCR & PDF
How to turn paper into clean PDFs with a phone, from ID cards and receipts to books and multi-page documents, plus Arabic and English text recognition and everyday PDF jobs such as merging, splitting, compressing and converting. The scanning guides use DocFlow Scanner, the Android app built by NasrTech, and compare it with CamScanner, Adobe Scan, Microsoft Lens and Genius Scan. The PDF guides use the browser tools on this site, which process files on your device.
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CamScanner Alternative Without a Watermark: What to Check, and the App I Build
What CamScanner's own Play listing says about ads and subscriptions, the five checks any replacement has to pass, and DocFlow Scanner, the Android scanner I build, with its pricing and limits.
The Best Arabic OCR App for Android (And When You Don't Need One)
Google Lens already reads Arabic and it is free. Here is when that is enough, when a dedicated Arabic OCR app earns its place, and when you want a scanner instead.
More Scan, OCR & PDF guides
ID Card Scanner: How to Scan Both Sides Into One Clean PDF
Scan an ID card properly: both sides on one page, edges cropped, text readable, and the whole thing processed on your phone instead of uploaded to a server.
How to Scan Multiple Pages Into One PDF (Not 12 Separate Files)
You photographed a twelve-page contract and now you have twelve images. Here's how to capture several pages as one ordered PDF, fix the order when it goes wrong, and keep the file small enough to email.
How to Scan Book Pages to PDF With Your Phone (Without Wrecking the Spine)
Curved pages, shadow down the gutter, and 200 photos in the wrong order. Here is the phone workflow that turns a book into one flat, searchable PDF.
How to Scan Receipts to PDF (Before They Fade)
Thermal receipts fade to blank paper in months. Here's how to scan them into clean PDFs on your phone, keep them organised by month, and make the text searchable.
How to Scan to PDF Without a Watermark (And Why Apps Add One)
You scanned a contract, exported it, and there is a logo across the page. Here's which apps stamp your PDF, how to check before you waste an hour, and how to get a clean export.
How to Sign a PDF on Your Phone (Without Printing It)
Someone sent a contract and asked for a signed copy. Here's how to sign it on the phone in a couple of minutes, what makes a signature hold up, and why printing and re-scanning is the worst option.
How to Test a Free Document Scanner App for Android in One Minute
Five checks that tell you what a free Android scanner really gives you: watermark, limits, uploads, ads and the awkward cases. Run them in a minute before you trust an app.
What Students Need From a Scanner App (and How to Test One Before the Deadline)
Multi-page with reordering, no watermark, no daily limit, offline, small files: the student scanner checklist, the captures that go wrong, and a one-minute test.
Microsoft Lens Is Retired: Save Your Scans, Then Pick a Replacement (Android)
Microsoft retired Lens in early 2026. The dates from Microsoft's page, how to get your old scans out, what OneDrive's scanner does differently, and what to use instead on Android.
Adobe Scan Alternative: What to Use If You Don't Want an Account
Adobe Scan is capable but wants an Adobe account and a cloud upload. Here's what an alternative needs to match, and where the on-device options genuinely win.
A Genius Scan Alternative With On-Device OCR (Including Arabic)
Genius Scan's free tier is genuinely good — but OCR sits behind a $39.99/year subscription. Here's when switching makes sense, what the alternative costs, and what you give up if you do.
How to Extract Arabic Text from an Image: An Arabic OCR Guide (2026)
Looking for free Arabic OCR? How to extract editable, searchable text from an image of Arabic, why Arabic OCR is hard, and what free upload sites and paid on-device apps trade off.
Extract Text From an Image on Android (Without Retyping It)
You have a photo of a page and you need the words in it. Here's how OCR actually works on a phone, what wrecks the accuracy, and how to do it without sending the page to a server.
Convert PDF to Word (Including Scanned & Arabic PDFs)
How to convert a PDF to Word, including scanned and Arabic PDFs that need OCR. DocFlow Scanner does on-device Arabic & English OCR and exports editable
How to Merge PDF Files for Free (Without Uploading Them)
Merge PDF files for free without uploading them to a stranger's server. Three private ways to combine PDFs on your computer or phone, step by step.
How to Split a PDF or Pull Out Specific Pages (Without Uploading It)
Need just a few pages from a big PDF? Split a PDF for free without uploading it - extract pages or break one file into several, right on your device.
How to Compress a PDF: Four Routes That Keep It Readable
Why a PDF is big, and four ways to shrink it: re-export from the source, the Mac Quartz filter, rebuilding a scan from compressed images in the browser, and fixing it at the scanner.
How to Convert a PDF to JPG for Free (Without Uploading)
Turn a PDF into JPG images for free without uploading it. Convert one page or a whole document to pictures on your phone or computer, step by step.
How to Convert Word to PDF for Free (Without Uploading)
Convert a Word document to PDF for free without uploading it. Built-in export in Word, Google Docs, Mac, and phones — your file never leaves your device.
How to Password-Protect a PDF for Free (Without Uploading)
Add a password to a PDF for free without uploading it. Encrypt on Mac, Windows, or your phone so only people with the password can open the file.
Convert an Image to PDF: Page Size, Order and No Upload
Turn one image or many into a PDF in the browser with nothing uploaded: page size (Fit to image, A4, Letter), order and margins, and when to scan the paper instead.
Are Online PDF Converters Safe? What Happens to Your Files (2026)
Is it safe to use online PDF converters? Here's what really happens to your file when you upload it, the real risks, how to spot a safe tool
Free Online Tools That Do Not Upload Your Files (and How to Check)
A five-minute Network-tab test that shows whether a web tool uploads your file, what it showed on this site's tools, and the list of browser-only tools by job.