Accessible PDF Manuscript Digitisation Project

I have a manuscript that needs to move from paper (or basic digital) into an accessible, reader-friendly PDF. My priority is accessibility: the final file must be fully searchable and compatible with text-to-speech software so that visually-impaired readers can navigate it with ease.

Here is what I need from you:

• A clean, professionally laid-out PDF created from my original manuscript.
• OCR or native text formatting so every word is searchable.
• Proper tagging and structure for screen-reader / text-to-speech tools (headings, alt-text where images appear, logical reading order).

If you already work with Adobe Acrobat Pro, InDesign, or similar accessibility-focused tools, that will help you hit the required standards quickly. I am open to your creative input on typography and layout as long as you keep readability front and centre.

Deliverables will be considered complete when:
1. The PDF passes a standard accessibility checker (e.g., Adobe Acrobat full check) with no critical errors.
2. Text-to-speech software reads the document in the correct order without skipping content.
3. Keyword search in any common PDF viewer instantly locates all terms tested.

Please tell me about any similar accessibility or PDF projects you have handled and the tools you prefer to use.