
Convert Eaze
Convertze
iLovePDF
TinyPDF
Adobe Acrobat DC
ConvertOnline.IO
PDF24 - Online PDF Tools
CloudConvert
KeptPDF
Smallpdf
iLovePDF
Sejda
Adobe Acrobat DC
CompilaPDF
FoxyUtils Online PDF Tools
OnDevicePDF
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:
Who it is for: law firms, accounting practices, clinics, and anyone who shares documents they cannot afford to leak.
The core tools are free with no sign-up. Works offline as an installable app.
Convert Eaze
KeptPDFConvert Eaze's answer
Convert Eaze stands out by delivering a powerful combination of reliability, efficiency, and affordability. Our platform ensures high uptime, meaning your file conversions, compressions, and mergers are always available whenever you need them — with minimal interruptions. We focus on providing a smooth, consistent experience that users can trust, whether for everyday tasks or critical projects.
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.
Convert Eaze's answer
Convert Eaze offers a unique balance of reliability, speed, and affordability that sets it apart from other tools. With consistently high uptime, users can rely on Convert Eaze to handle file conversions, compressions, and mergers at any time without delays or failures. Our platform is optimized for efficiency, delivering quick processing without sacrificing quality.
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.
Convert Eaze's answer
Our primary audience includes students, professionals, small businesses, content creators, and anyone who frequently needs to convert, compress, or merge files quickly and dependably. Whether for academic projects, corporate tasks, creative work, or everyday personal use, our users are people who expect high-quality results without downtime — and who appreciate a cost-effective solution that doesn’t compromise on performance.
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.
Convert Eaze's answer
Convert Eaze was created out of a simple but important realization: file conversion, compression, and merging should be fast, reliable, and affordable — without the usual frustrations of downtime, poor quality, or high costs. We noticed that many existing tools were either too expensive, too slow, or unreliable when users needed them most. So, we built Convert Eaze with a clear mission: to make file management effortless and accessible for everyone.
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.
Convert Eaze's answer
The frontend is developed with Next.js, providing a fast, responsive, and seamless user experience. Our backend is powered by Node.js, enabling efficient, real-time processing of file conversions, compressions, and mergers. We utilize AWS (Amazon Web Services) as our cloud platform, ensuring high uptime, scalability, and secure data handling. For data storage, we rely on MongoDB, a flexible and high-performance NoSQL database, allowing us to manage user data and file operations efficiently.
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.
Convert Eaze's answer
Small businesses and startups needing fast and reliable file management tools
Freelancers and content creators handling large volumes of media files
Educational institutions managing student assignments and digital resources
Marketing agencies working with heavy design assets and campaign files
Remote teams and tech companies requiring secure and efficient file handling
Legal and consulting firms needing document compression and merging solutions
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.
Convertze - Free in-browser tools: convert and compress images, merge and split PDFs, count words, format JSON, decode JWTs and more. Your files stay on your device.
Smallpdf - PDF document management and conversion suite
iLovePDF - Premium online PDF tool set
TinyPDF - Create professional quality PDF files from virtually any printable document.
Sejda - Split, merge and other powerful PDF tools.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.