What this tool does
Compare PDF: free online PDF tool with clear controls, private processing where supported and verifiable results.
Input and output
Compare PDFs: one first pdf (PDF) plus one second pdf (PDF) → the Compare PDF result, which you can copy and download when the tool produces a file
How to use Compare PDF
- Provide one first pdf (PDF) plus one second pdf (PDF).
- Leave Comparison resolution (DPI) at its default "96" or choose another value.
- Leave Pixel sensitivity (0-255) at its default "24" or choose another value.
- Press "Compare PDFs" and review the result in the panel on the right.
- Download or copy the Compare PDF result, which you can copy and download when the tool produces a file.
Privacy and limitations
- Compare PDF runs entirely in your browser: the input is not uploaded, so it never leaves your device.
- Accepted input types: PDF.
- Output: the Compare PDF result, which you can copy and download when the tool produces a file.
- Results depend on valid input and on the limits declared by each field above; this page does not promise a fixed processing time or file size.
Frequently asked questions
- Is my data uploaded when I use Compare PDF?
- No. This tool runs entirely in your browser, so the input stays on your device and is not uploaded.
- Which input does it accept?
- It accepts one first pdf (PDF) plus one second pdf (PDF). Supported file types: PDF.
- What do I get back?
- After you press "Compare PDFs" the result panel shows the Compare PDF result, which you can copy and download when the tool produces a file, which you can copy or download.
