RoxyBrowser VS KeptPDF

RoxyBrowser's answer

The main audience of Fingerprint Browser includes, but is not limited to, cross-border e-commerce practitioners, social media operation specialists, advertising and marketing personnel, privacy-sensitive users (e.g., financial practitioners, freelancers, etc.), as well as various types of enterprises and individual users who need efficient multi-account management and privacy protection, who use the Fingerprint Browser to meet the needs of multi-account operation, preventing account linkage, protecting business privacy and improving work efficiency.

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.

RoxyBrowser's answer

With advanced fingerprint camouflage technology, powerful multi-account management capabilities, excellent team collaboration features, user-friendly interface design, advanced security and privacy protection, and rich feature integration, RoxyBrowser has become a leader in the fingerprint browser field, providing users with a comprehensive and efficient solution for multi-account management and privacy protection.

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.

RoxyBrowser's answer

With its advanced fingerprint camouflage technology, powerful multi-account management capabilities, excellent team collaboration features, user-friendly interface design, advanced security and privacy protection, and rich feature integration, RoxyBrowser has demonstrated significant advantages in multiple dimensions, and has become a leader in the field of fingerprint browsers, providing users with a comprehensive and efficient solution for multi-account management and privacy protection. Both technical novices and professionals can easily get started, and provide users with powerful support in multiple scenarios such as cross-border e-commerce, social media operation, advertisement placement, data capture, etc., to help users efficiently complete their tasks and maximize their business value.

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.

RoxyBrowser's answer

RoxyBrowser was born out of deep insight and innovation in privacy protection and multi-account management. RoxyBrowser was born out of the challenges faced by users in the digital age in terms of multi-account operations and privacy protection. RoxyBrowser was developed by a team of top talents in the fields of browser technology, network security and user experience, with the goal of creating a revolutionary browser. After years of careful research and development and continuous optimization, RoxyBrowser has not only made breakthroughs in technology, but also set industry benchmarks in user privacy protection, multi-account management, team collaboration and security performance, providing powerful digital tools for users around the world.

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.