Canonical Tag Inspector - Online Check Rel=Canonical from Page Source
Paste HTML or URL to extract canonical link tag. Verify self-referencing. Simple SEO audit step. Local only.
UD5 Toolkit
Paste HTML or URL to extract canonical link tag. Verify self-referencing. Simple SEO audit step. Local only.
Check how many pages a PDF has without uploading it (uses FileReader). Also shows file size and title if available. Simple and fast client-side tool.