PDF BasicsFoundation
What Is PDF Compression?
PDF compression reduces file size by optimizing how document data is stored. The result depends on what the PDF contains.
5 min readRead guide
Simple document changes
Edit PDF
Learn practical PDF edits such as rotating pages, adding page numbers, watermarking and reducing file size.
PDF editing should stay focused. LiftPDF avoids fake advanced editing and concentrates on changes that can be applied reliably in the browser.
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Guides for edit pdf
TroubleshootingProblem
Why Is My Merged PDF Too Large?
A merged PDF is usually large because the source files contain high-resolution scans, photos, embedded images, duplicate pages or already-large PDFs.
4 min readRead guide
PDF and ImagesProblem
How to Keep Original Image Quality in PDF
To keep original quality, avoid unnecessary resizing. Match the PDF page to the image when possible and use the cleanest source JPG.
4 min readRead guide
How to choose
Choose the smallest workflow that solves the task
- Fix rotated scans or pages.
- Add page numbers before sharing a report.
- Watermark drafts or review copies.
- Reduce file size before email upload limits.
Common mistakes
Avoid these traps
- Expecting compression to shrink already optimized PDFs.
- Using watermarks as a security feature.
- Adding page numbers before the page order is final.
FAQ
Questions about edit pdf
Can LiftPDF edit the text inside a PDF?
LiftPDF V1 focuses on reliable browser-based operations. It does not offer full text editing inside PDF content.
Should I reorder pages before adding numbers?
Yes. Finalize page order first, then add page numbers so the numbering matches the finished document.