Askem PDF Fixer vs Grackle PDF

Askem PDF Fixer is a paid web service that checks PDF accessibility, applies automatic corrections, and validates results against PDF/UA-1 and applicable WCAG 2.1 AA criteria. Fixes cover document structure and tags, reading order, image alternative text, metadata, artifacts, and untagged content. Every document receives a validation result and a per-document record; Askem says more than 9 in 10 documents pass. A single upload accepts PDFs up to 500 pages and needs no integration, project, or procurement process. Batches can contain up to 200,000 documents. Files can be processed in any language, with the language set in PDF metadata. Scanned PDFs, complex tables or infographics with ambiguous meaning, context-dependent alternative text, and forms with conditional logic are flagged for manual handling. Documents are processed and stored on EU infrastructure and are not transferred outside the EU. OCR and API access are not available. Pricing is on request, with a 20-minute call offered for prospective customers.

Grackle PDF has no write-up on Specifiction yet; its figures are above.