Repair and acceptance
Size and scanning
Convert PDF
Pages and document operations
When a portal says your PDF is invalid
Do not assume the document only needs compression. A rejection can come from structure, encryption, unsupported content, size limits or compatibility checks. Start with PDF repair and diagnosis when the file appears damaged, or upload requirement fixing when the portal states a measurable requirement such as file size or accepted format.
When the PDF is too large
Use the general compressor when the target is flexible, or the exact 1 MB workflow when a portal imposes that limit. The useful result is not merely a smaller file; the output must also remain a readable PDF and satisfy the requested threshold.
When the PDF is a scan
A scanned PDF can look normal while containing no searchable text. OCR is the correct workflow when the goal is selectable or searchable text, while text extraction is appropriate when the PDF already contains text objects.
Need broader file recovery?
For Word, Excel, PowerPoint, ZIP and unknown files that will not open, use the file repair and recovery hub.