Guides
Clear, practical answers to common PDF and document questions — no jargon, just what actually works.
How to reduce PDF file size
What actually makes a PDF large, how much you can realistically save, and how to shrink one for email or upload without ruining quality.
How to convert a PDF to Word
How conversion really works, why scanned PDFs convert badly, and how to get an editable .docx that keeps its structure.
How to fill out a PDF form
Why some PDF forms won't let you type, and how to complete a flat form without the print-sign-scan ritual.
JPG vs PNG vs WebP
When each format wins on quality, transparency and size — so you pick the right one before converting.
What is PDF/A?
What makes PDF/A different from a normal PDF, who requires it, and when you actually need to convert.
How to merge PDF files
Combine several PDFs into one, control the order, and do it without uploading anything.
How to split a PDF
Split a PDF into separate files or pull out exactly the pages you need — and when to use each.
How to sign a PDF
Add a signature digitally — draw, type or upload it — and skip the print-sign-scan routine.
How to redact a PDF securely
Black out sensitive information properly, avoid the classic redaction leak, and verify your work before sharing.
How to add a watermark to a PDF
Stamp a text or image watermark across a PDF for drafts, confidentiality or branding — with the right opacity.
Working with Markdown, PDF and Word
Turn Markdown into a polished PDF or Word file and back — and when each format is the right one.
How to rotate a PDF and save it
Permanently rotate pages, and fix the reason a rotation sometimes seems not to save.
How to convert a PDF to images
Turn PDF pages into JPG or PNG images, pick the right format, and keep them sharp.
How to create a professional invoice
What a proper invoice must include — fields, numbering, tax, terms — and how to generate one fast.
How to combine images into a PDF
Turn photos or scans into one tidy PDF, set order and page size, without uploading anything.
CSV vs JSON vs YAML vs XML
What CSV, JSON, YAML and XML are each good at — and how to convert between them cleanly.