Preflight tags, language, title, figures, form labels, and links without uploading the document.
Your PDF is parsed entirely in this browser. No file content or check result is sent anywhere.
Structural preflight, not accessibility certification
Passing these checks does not prove PDF/UA or WCAG conformance. Reading order, contrast, reflow, and the quality of labels and alternatives still need human and assistive-technology testing.
Extract PDF Fonts
Recover embedded TrueType font programs from selected PDF pages locally with licensing and subset warnings.
Extract PDF Images
Recover original embedded raster images from selected PDF pages locally without rendering page screenshots.
OCR PDF
Recognise English printed text and create a searchable PDF locally with self-hosted WebAssembly.
PDF Active Content Inspector
Inspect and selectively remove scripts, automatic or external actions, attachments, interactive media, and XFA content locally.