PDF Page Processing Guides
How do I make all PDF pages the same width?
Scanned PDFs often contain pages with inconsistent widths. Learn how to normalize page sizes across your entire document seamlessly.
How do I export a PDF to A4?
Stop printing documents with huge margins. Learn how to properly resize and fit your PDF pages to standard A4 paper size.
How do I split landscape spread scans?
Book and magazine scans often contain two pages in one wide image. Learn how to automatically split them down the middle.
How does PDF batch rename work?
When you need to rename many PDFs by their content, learn how to automatically extract text and bulk rename your files.
How do I convert images to PDF?
The fastest way to combine JPGs or PNGs into a single, high-quality PDF document without losing image clarity.
How do I convert a PDF to images?
PNG vs JPG, and how resolution decides whether your exported pages look sharp or blurry. Covers format trade-offs and batch export.
How do I compress a PDF?
Attachment too large? What compression actually does, why scans and text PDFs need different strategies, and how to pick a level.
How do I rotate PDF pages?
Which angle fits which case, why a rotated page sometimes reverts on another device, and the odd/even trick for duplex book scans.
How do I extract pages from a PDF?
Range syntax, one merged file versus one file per page, and why extraction is one of the few genuinely lossless PDF operations.
How do I merge PDF files?
The three mistakes that cost you time — wrong order, mismatched page sizes, encrypted inputs — and the right order for extraction plus merging.
How do I add page numbers to a PDF?
Choosing among six positions, continuing an existing numbering sequence, header and footer text, and whether numbering overlaps your content.
How do I add a watermark?
Text or image, the counter-intuitive fact that higher opacity means more visible, tiled versus centred, and why watermarks do not stop leaks.
How do I remove sensitive data from a PDF?
Why a black box is not a deletion, how batch find auto-marks ID numbers and phone numbers, and why scans must be OCR'd first.
Why are PDF page widths inconsistent? 3 common causes
Different sources, scanner settings, and export defaults cause mismatched widths — and how to unify them locally.
How do I split a scanned PDF into single pages?
Turn two-page landscape scans back into normal pages automatically, without cutting covers in half.
How do I make a PDF fill A4 when printing?
Understand "Fit" vs "Fill" and convert to standard A4 without losing selectable text.
How to convert JPG/PNG to PDF without losing quality?
Keep original resolution and avoid server compression when turning images into a PDF.
Why process PDFs locally in the browser?
Unlike traditional online PDF tools, UniPagePDF performs the work in your browser: files are not uploaded to a server, ensuring 100% privacy and speed.
How do I edit PDF document properties?
What each of the four fields does, why leaving an input blank keeps the old value instead of deleting it, and which tool to use to modify versus remove properties.
How do I resize a PDF to A4, A3 or Letter?
Presets, custom dimensions and pt/mm/cm/in units, why fitting a page leaves white space when aspect ratios differ, and how it differs from Fill A4 and Uniform Width.
OCR a PDF: make a scanned document searchable
Why scans cannot be searched, the four steps OCR takes, how to pick the recognition language and page range, and what to expect the first time the engine loads.
How do I remove personal information from a PDF?
What to clear before sharing — document properties, comments, form values, scripts and open actions — plus how the keep-properties switch works and what rebuilding costs.