THYNKPDF
Your everyday PDF work, in one free app.
Open and organize documents, combine or split pages, add annotations, fill forms and more. ThynkPDF runs on your computer, with no subscription or billing.
Practical tools for PDF tasks.
Read and organize
Open PDFs, browse your documents and arrange pages in a useful order.
Merge and split
Combine files or extract the pages you need into a separate PDF.
Annotate and fill
Add comments and markups, fill supported forms and place a visual signature.
Some advanced edits and document types have limitations. Check the project documentation before relying on a particular workflow.
Pick your computer.
These links go directly to the published v0.1.7 release on the ThynkAI GitHub repository. Download and install only if you are comfortable trying an early version.
Mac says it can’t verify ThynkPDF?
- After downloading the correct Mac installer from the official release, move ThynkPDF into Applications and try opening it once.
- Open System Settings → Privacy & Security. Scroll to Security and select Open Anyway next to ThynkPDF, then confirm Open.
- If Open Anyway is missing, try opening ThynkPDF again and return to Privacy & Security. Apple says the button is available for about an hour after the attempted launch.
If macOS says the app is damaged, modified, or contains malware, do not override that warning. Delete the installer, re-download from the official release, and report the exact message.
Before you download: These early installers are not code-signed or notarized. Windows or macOS may show a security warning. Review the official release and its documentation first. Avoid sensitive documents while evaluating an early build.
For the newest published version, visit GitHub Releases. Have a bug or suggestion? Open an issue.
Made by ThynkUnicorn.
ThynkPDF is a free product from our team. If your business needs a website, search visibility or a custom workflow, tell us what you are building.