PDF Check
Preview PDF page by page and inspect the fonts, images, and instruction stream structure of the current page. All analysis is completed locally in the browser.
Security and Privacy Commitment
Drag a PDF here, or click to select a file
Supports page-by-page preview, viewing document metadata, and analyzing fonts, images, and operator tree of the current page.
How to Use PDF Inspect
Import PDF
Drag the file into the page. The tool will read the document metadata and prepare the first page for analysis.
Switch Pages
Quickly navigate through multi-page documents using the previous page, next page, and page number input box.
View Resources and Instructions
Switch between Overview, Fonts, Images, and Instruction Stream tabs to inspect the PDF's internal structure page by page.
Why use this tool to inspect PDFs
Page-focused
Instead of traversing the entire document at once, view the current page's resources and instructions first to pinpoint issues faster.
Directly visualize the drawing process
Organizes pdf.js's operator list into a structured tree, making it easier to understand how a page is rendered step by step.
Local analysis
Files are not uploaded to the server, making it ideal for inspecting contracts, reports, and internal documents.
Ideal for troubleshooting resource issues
Quickly verify which fonts and images are actually used on the current page and whether they are properly embedded.
Frequently Asked Questions
Will the files be uploaded?
Why don't some images have thumbnails?
Will this 100% restore the underlying semantics of the PDF?
Why might encrypted PDFs not open?
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