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Fast, Modern, Secure VPN Tunnel

Smallpdf
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OnDevicePDF
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, WireGuard seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | wireguard.com | keptpdf.com |
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| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of WireGuard 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
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of KeptPDF yet.
Walkthroughs and reviews on video.
WireGuard Overview
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 WireGuard 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 WireGuard 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.


Wireguard is a VPN alternative that is under development. Yet it is faster and carefully designed when compared to other similar products.
In essence, every VPN has to strengthen WireGuard’s wobbly privacy to benefit from its speed and security. That’s why we recommend using WireGuard-based protocols only if they come from reputable VPN providers....
WireGuard was not designed to obfuscate user traffic to this degree, and only supports UDP. This means that a simple, standalone WireGuard connection is easy to detect. However, as WireGuard is so extensible, most VPN...
We have no reviews of KeptPDF yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Wireguard. Wireguard uses UDP only and runs TCP sockets over UDP. Source: over 3 years ago
Look at Wireguard. I know you don't want Yet Another VPN running alongside your IPSec, but it's less VPN and more encrypted point-to-point UDP. You can set it up on any port you wish, including common ports that might be open on an... Source: over 3 years ago
We use Elixir/Erlang for our control plane, and Rust for our data plane, built on the excellent WireGuard® tunneling protocol. Source: over 3 years ago
Tracking KeptPDF since Aug 2026.
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