You converted PDF to HTML for the web. The output is technically HTML but it's positioning-based, with absolute coordinates on every element. Browsers render it but it's brittle and ugly.
What's actually going wrong
PDF is position-based; HTML is flow-based. Faithful conversion produces position-based HTML (`position: absolute` everywhere) that looks right but doesn't behave like normal web content — no responsive resize, no flow, no semantic structure.
Structural conversion to flow-based HTML is harder. The tool has to detect headings, paragraphs, lists, and rebuild as semantic HTML. Many tools don't try; they just dump positioned divs.
The quick fix
Use Flint for PDF-to-Word first. Word represents content structurally (paragraphs, headings, lists). Then export Word to HTML — the structure carries through cleaner than direct PDF-to-HTML.
For web display purposes, sometimes a flat embedded PDF is better than poor HTML. PDF.js viewers in browsers handle PDFs natively and look the same as the source.
If that didn't work
For genuine web content from PDFs, manual cleanup is usually needed. Convert to Word, edit the structure, then convert to HTML. Or hire a designer to rebuild the content as proper web content.
PDFs and web content are fundamentally different media. Direct conversion almost never produces ideal HTML.
Prevent it next time
Author for the web from the start when web is the target. PDFs are for print and document distribution; HTML is for web. Cross-format conversion is always a compromise.
FAQ
Why does PDF-to-HTML look so different from PDF?
Faithful conversion produces brittle position-based HTML; structural conversion changes layout. Either way, the output doesn't match PDF appearance and behaviour exactly.
Should I convert PDF to HTML or embed the PDF?
For web display, embed PDF.js viewer. For SEO-indexed text content, convert and clean up. Match the route to the goal.
Can I get responsive HTML from PDF?
Yes, via PDF-to-Word and Word-to-HTML route, with manual cleanup. Direct PDF-to-HTML rarely produces responsive output.
Is there a tool that produces perfect HTML from PDF?
No tool produces perfect HTML from arbitrary PDFs. The semantic gap is too large for automation. Use tools to get close, then clean up manually.
PDF-to-HTML needs strategy. Route via Flint's converter and Word for cleaner output.