KeptPDF VS FirstClickTools

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.

FirstClickTools's answer:

FirstClickTools stands out by removing the friction that most free tool sites still have. There's no sign-up, no account creation, and no watermarks on any output. File size limits are generous (100MB+), well beyond the 15MB caps common on competing free tools. Simple tasks process directly in the browser for speed and privacy, while heavier tasks run on encrypted servers with automatic file deletion within one hour.

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.

FirstClickTools's answer:

Most free PDF, image, and video tool sites push users toward paid plans, require account sign-ups, or add watermarks to outputs. FirstClickTools keeps everything free with no registration, no watermarks, and no artificial file size restrictions. With 25+ tools covering PDF, image, video, file conversion, and AI writing in one place, users don't need to jump between multiple sites for different tasks.

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.

FirstClickTools's answer:

Students who need to merge PDFs, convert files, or organize study materials; designers who compress and convert images without losing quality; professionals handling contracts and documents who need quick PDF-to-Word conversions; developers working with file format conversions; and content creators compressing videos or generating quick written content.

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.

FirstClickTools's answer:

FirstClickTools was built out of frustration with existing free tool sites that gate basic features behind sign-ups, cap file sizes too low for real use, or slap watermarks on every output. The goal was to create a single destination where PDF, image, video, and file conversion tools just work instantly, with no barriers, so people can get their task done and move on.

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.

FirstClickTools's answer:

Next.js, React, Node.js, Typescript, Vercel, WebAssembly (WASM) and client-side processing (via @ffmpeg/ffmpeg and client-side ML models) to ensure your files stay secure and process right inside your browser whenever possible. For heavier tasks like AI background removal, we hook into a lightweight, secure FastAPI backend.

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.

FirstClickTools's answer:

FirstClickTools doesn't operate on a traditional B2B customer model — it's a free, publicly accessible tool used by students, freelancers, small business owners, and content creators worldwide for everyday PDF, image, and video tasks.