Select the first PDF
Drop a PDF here or click to select
Select the second PDF
Drop a PDF here or click to select
Files stay in this browser. Each PDF can be up to 50 MiB and 500 pages; encrypted PDFs are not supported.
Raise the threshold to ignore small color differences caused by rendering.
First PDF
Second PDF
Compare the visible pixels of two rendered PDF pages. This tool helps you inspect visual differences; it does not analyze text meaning, contracts, or revision history.
Pages share one comparison area and are aligned at the top left without stretching. If their sizes differ, the uncovered area remains visible so dimensions and missing content can be compared.
Use side-by-side view for an overview, the slider or overlay to inspect placement, and pixel difference to highlight changed visible pixels. You can download the current difference view as a PNG image.
Both PDFs are processed in this browser tab and are not uploaded to a server. Very large pages may be scaled down to stay within safe limits for your device.
Related tools: Image Compare · PDF Viewer · PDF to Images