PDF checker

Check PDF page count, dimensions and structure

Read PDF page counts, page-size consistency, font and image counts, and metadata or signature presence. Compare actual facts with submission rules.

Different paper sizes inside one PDF can cause a submission failure even when its byte size is small. This checker inspects every page and marks incomplete evidence clearly.

Open this tool

Choose a file

Local checks stay in your browser. Basic image and PDF processing works without login and uploads files only when you run it.

Preflight acceptance mode

Server conversions use this mode to decide whether output is accepted.

Maximum file size (bytes)

Default: 200,000 bytes (about 200KB)

Maximum pages (optional)

PDF page count is checked after server inspection.

Require consistent PDF page sizesChecks every page width and height after server inspection.

PDF server operation

Result

Choose a file to see its actual facts

Your preflight report will appear here.

How it works

Select a PDF and set optional maximum bytes, maximum pages and consistent-page-size requirements.
Run PDF inspection and read each page’s measured dimensions.
Review failed or unknown checks before deciding whether to compress, split or rotate.

Capabilities and limits

Encrypted documents and PDFs with active content or embedded attachments are rejected.
Font and image counts describe the PDF structure; they are not an OCR or accessibility audit.
Signature presence does not verify signer identity or cryptographic validity.

Questions

Does checking a PDF change its signatures?

Inspection does not rewrite the file. Converting or editing a signed PDF can invalidate its signature and may require signing the new output again.