How to draw notes on a PDF
Use freehand marks to point out a diagram detail or add a short review note, then inspect the exported PDF.
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Articles and resources from the AlphaPDF team.
How to highlight a PDF for review
Add a translucent highlight to a passage and keep the document readable for the next reviewer.
Read articleHow to edit existing PDF text and check the result
Use the existing-text editor when the PDF exposes editable lines, then inspect fonts, spacing and exported wording.
Read articleHow to add text to a scanned PDF
Place a new text note or answer over a scanned page, with clear limits on what that changes.
Read articleWhy can a PDF be larger after compression?
Compare actual file sizes and usefulness when a compression export stays the same size or becomes larger.
Read articleWhy does my PDF look blurry after compression?
Return to the original PDF and use a less aggressive export setting when important text or images become blurry.
Read articlePDF too large for an upload limit? A practical decision path
Work through an upload-size rejection without assuming compression can hit an exact number of megabytes.
Read articleHigh quality, Balanced or Smallest file: choosing a PDF export preset
Choose a PDF export quality preset based on what the recipient needs to read, then compare the actual download.
Read articleHow to add another PDF to an existing document workspace
Append a late PDF to an open AlphaPDF workspace and export the combined document without starting over.
Read articleHow to remove a duplicate page from a PDF
Identify a repeated page, remove the unwanted copy and verify that no unique content disappeared.
Read articleHow to rotate sideways pages in a PDF
Correct a sideways page in the editor, then confirm the rotation is present in the downloaded PDF.
Read articleHow to extract selected pages from a PDF
Save only the PDF pages you need by selecting them explicitly and choosing the extraction export mode.
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