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The ERITHRA Blog

Learn it. Make it. Done.

Clear explanations for the work behind the tools. No long detours.

An open notebook, teal folder, yellow clip and terracotta cup on a bright desk

PDF3 min read

Remove known PDF page positions and keep a checked copy

Delete blank or irrelevant pages with explicit page ranges, verify what remains, and distinguish page removal from redaction.

PDF3 min read

Reorder a PDF with every page included exactly once

Map old page positions to a complete new sequence and check a reordered PDF without accidentally omitting or duplicating pages.

PDF3 min read

Rotate selected PDF pages without turning the whole document

Choose actual page positions, add a clockwise rotation, and verify a mixed-orientation PDF after export.

PDF3 min read

Extract exactly the PDF pages you need

Use page positions and ranges to create a smaller PDF excerpt while avoiding printed-page-label mistakes.

PDF2 min read

PDF to Excel: a practical guide

Extract text-based PDF tables into an XLSX workbook.

PDF3 min read

Export selected PDF pages as JPEG images

Choose page positions and render scale, calculate output dimensions, and understand the searchable-text tradeoff of PDF rasterization.

PDF2 min read

PDF to PNG: a practical guide

Export selected PDF pages as crisp PNG images.

PDF2 min read

PDF to PowerPoint: a practical guide

Turn PDF pages into a PowerPoint slide deck.

PDF2 min read

PDF to Text: a practical guide

Extract a PDF’s text into a copyable TXT result.