How to Troubleshoot Document Conversion: Formats, Fonts, Encryption, and Pages

Start with the original file, not a file whose extension was renamed or a copy passed through several apps. Confirm that it opens normally in the application that created it, note the exact error, and keep an unchanged source copy. A file that is damaged, incomplete, password-protected, or outside the accepted format cannot be fixed by repeatedly uploading it.

Separate a rejected upload from a completed conversion with an imperfect result. Rejection usually points to file type, size, encryption, page count, or a damaged source. An imperfect result usually calls for reviewing fonts, layout, page selection, image settings, or OCR rather than resubmitting the same settings.

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The completed result is a starting point: compare layout, fonts, table alignment, and page breaks before relying on it.

Word to PDF accepts DOC, DOCX, ODT, and RTF files up to 100 MB. Save the document in one of those real formats before upload; changing only the filename extension does not change its internal format. Password removal and source repair must happen in the program that owns the document.

A PDF can complete and still look different. Inspect headings, page breaks, tables, images, headers, footers, and unusual characters. Font substitution, linked or missing resources, and application-specific layout features can change line wrapping and pagination. When exact visual fidelity matters, export a PDF from the original authoring app as a comparison and retain the original document.

1. 1

   Open the source first.

   Make sure the document is complete and opens without a repair prompt.

2. 2

   Use a supported original.

   Upload DOC, DOCX, ODT, or RTF rather than a renamed or password-protected file.

3. 3

   Check representative PDF pages.

   Review the first page, a dense table page, a page with images, and the final page.

4. 4

   Repair at the source when needed.

   Resolve missing fonts, password protection, or document errors in the authoring application before retrying.

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The completed result is a starting point: compare layout, fonts, table alignment, and page breaks before relying on it.

PDF to Image accepts one PDF up to 100 MB and 200 pages. It can create PNG or JPG at 100, 150, 200, or 300 DPI. Higher DPI provides more pixels but produces larger files and can take longer to render, so start with the lowest setting that suits the destination. PNG is a useful choice when sharp text or graphics matter; JPG may suit photographic pages where a smaller image is more useful.

Choose only the pages you need. Leave the page field empty for all pages, or use numbers and ranges such as 1,3-5. A single selected page is delivered as an image; multiple pages are delivered in a ZIP file. Password-protected or encrypted PDFs are not supported, so unlock a copy through an authorized source application before upload.

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Use a limited page selection and the lowest practical DPI before rendering a large document.

PDF to Markdown accepts one PDF up to 200 MB and 200 pages. Auto first uses embedded PDF text when there is enough of it, then falls back to OCR when it is not. Always forces OCR, which is useful for scanned pages; Never uses embedded text only, which is useful when you want to avoid OCR. None of these modes guarantees that tables, columns, reading order, names, or numbers will be reconstructed exactly.

Download and compare the Markdown, TXT, and JSON results with the source. Give extra attention to headings, multi-column pages, tables, dates, identifiers, negative signs, and proper names. OCR confidence can help prioritize review, but it is not proof that a line is correct.

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The preview demonstrates why headings and table layout should be reviewed against the source even when extraction completes.

Word to PDF has a default two-minute processing timeout. PDF to Image has a two-minute timeout for each rendered page. PDF to Markdown has an eight-minute timeout. A complex, damaged, or unusually large source can therefore stop even when it meets the upload limit; reduce the scope, prepare the source, or process a smaller authorized copy.

All three tools use temporary server storage. The default cleanup period is 30 minutes, so download the output promptly and retain your own original and verified result. Do not use a conversion workspace as an archive, and do not upload material you are not authorized to process.

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The preview demonstrates why headings and table layout should be reviewed against the source even when extraction completes.