
Genius Scan
Microsoft Lens
OpenScan
Adobe Acrobat DC
Scanner Pro
OSS Document Scanner
ABBYY FineReader
Scan anything into a PDF using your mobile device.

Smallpdf
iLovePDF
Sejda
Adobe Acrobat DC
PDFStaple
PDF24
PDF Expert
Redact, edit, OCR, and sign PDFs entirely in your browser. The file never leaves your device. Free, no account needed.

Which is more popular?
Based on our record, Adobe Scan seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | adobe.com | keptpdf.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Adobe Scan yet.
KeptPDF is a PDF toolkit that runs entirely in your browser. Nothing uploads: every tool runs on your own device, so the document never touches a server. What it does: Redaction that auto-detects names, SSNs, phone numbers, addresses, and dates, then removes the underlying text instead of drawing...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
Adobe Scan vs Office Lens - Comparing Features and Quality
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Adobe Scan and KeptPDF.
KeptPDF's answer:
KeptPDF runs entirely in your browser. Your file, and the text inside it, never leaves your device. Not to an AI, not even to us. You can open your browser's network tab and watch: the document bytes never go out.
Most online PDF tools upload your file to a server first, and some "AI redaction" services quietly send your document text to a third-party model. That is the exact risk people are trying to avoid when they redact something.
KeptPDF also does true redaction. The text is removed from the file, not covered with a black box you can copy out later. Every redaction produces a verification certificate you can share with the file.
KeptPDF's answer:
Three reasons.
Privacy you can verify, not just a promise. Processing happens locally in the browser, so there is no upload step to trust. We do send anonymous usage counts for quota, and we say so plainly, but never your document.
Real redaction with proof. Removed text is permanently gone, and you get a certificate showing the file was checked for leftover extractable text. Automated detection cannot catch everything, so a final human review is still your job, and the tool says that too.
It works on a phone. Most PDF suites assume a desktop. KeptPDF was built and used on a phone first, so redacting a document while you are standing in a hallway actually works.
KeptPDF's answer:
Anyone who has to hand a document to someone else and needs the sensitive parts gone first.
In practice that is solo attorneys and small law firms, accountants and tax preparers, healthcare and records staff handling requests, HR teams, and individuals dealing with their own medical, legal, or financial paperwork.
The common thread is not an industry. It is a person who cannot upload a confidential file to a random website, and who does not have an enterprise IT budget to solve it.
KeptPDF's answer:
A family member got seriously ill. We spent most days at the hospital, and straight answers were hard to come by, so we leaned on AI tools to make sense of the records, notes, and lab results.
But you cannot paste a medical record into an AI chat. You have to strip the names, the ID numbers, the diagnoses first. And almost every tool we found either wanted to upload the whole file to a server, or "auto-redacted" by sending the document text to an online AI. That was the exact thing we were trying to avoid.
Most of this was happening on a phone, at a bedside. So I built the tool I needed: redaction that runs on the device, works on mobile, and never sends the file anywhere. That turned into KeptPDF, which is now a full PDF suite with over 20 tools, all local-first.
KeptPDF's answer:
The app is plain JavaScript with no front-end framework, which keeps it fast and keeps the code auditable.
PDF work happens in the browser using pdf.js for rendering and pdf-lib for writing. Text recognition uses Tesseract running as WebAssembly. Password and encryption handling uses a WebAssembly build of qpdf. It is a Progressive Web App, so it installs and works offline.
The thin server side is Node on Vercel, with Postgres for accounts, Stripe for billing, and Resend for email. None of those ever see a document.
KeptPDF's answer:
KeptPDF is early and independent, and we do not publish customer names. The product is privacy-first by design: we never see your documents, and we do not track who our users are or what they work on. Publishing a client list would sit badly next to that.
The user base today is mostly solo attorneys, small firms, accountants, and individuals handling their own records.
Share your experience with using Adobe Scan and KeptPDF. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Adobe Scan is good at live edges, auto crop, cleaning, and AI straightening. It can import photos and do High-Speed Scan. Files go to Adobe’s cloud, and you still get a review step. An Adobe Scan alternative is useful...
We have no reviews of KeptPDF yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


I use Adobe Scan to scan stuff: receipts, handwritten notes, mail to save, etc. Source: over 5 years ago
Use a PDF scanner app on your phone. However, do NOT use iOS Notes' scanning function. I recommend Adobe Scan, as it eases the process of converting the PDF into an image file. Source: over 5 years ago
Both the Adobe Scan and Microsoft Lens scanner apps work really well: https://acrobat.adobe.com/us/en/mobile/scanner-app.html. Source: over 5 years ago
Tracking KeptPDF since Aug 2026.
When comparing Adobe Scan and KeptPDF, you can also consider the following products.



Microsoft Lens (formerly known as Office Lens) is an all-in-one application designed for Windows, Android, and Apple devices, allowing you to capture important information from signs, PDFs, whiteboards, and more to add.
Compare Microsoft Lens to Adobe Scan or KeptPDF:


