🚀 How Core PDF Tools Work
Choose Tool
Click on any tool card below to open it.
Upload PDF
Drag & drop or click to select your PDF file.
Configure
Set options — pages, quality, settings etc.
Process
All processing happens in your browser instantly.
Download
Save the result to your device. Nothing uploaded.
📁 Organize & Manage Pages
13 ToolsMerge PDF
Combine multiple PDFs into one document
Split PDF
Split into individual pages or custom ranges
Delete Pages
Remove specific pages from a PDF
Reorder Pages
Drag & drop pages to reorder them visually
Extract Pages
Extract selected pages into a new PDF
Rotate PDF
Rotate pages 90°, 180°, or 270°
Add Blank Pages
Insert blank pages at any position
Reverse PDF
Flip the order of all pages in a PDF
Move Pages
Move pages to exact positions in the PDF
Duplicate Pages
Copy and repeat specific pages
PDF Bookmarks
Add/manage navigation bookmarks
Odd/Even Pages
Extract odd or even pages separately
Interleave PDFs
Alternate pages from two PDFs
⚡ Optimize & Resize
8 ToolsCompress PDF
Reduce file size by 40–80% without quality loss
Resize PDF
Change page size to A4, Letter, A3, etc.
Crop PDF
Crop margins and white space from pages
PDF Optimizer
Advanced compression with quality presets
Linearize PDF
Optimize PDF for fast web viewing
Remove Images
Strip all images to reduce PDF size
Grayscale PDF
Convert colorful PDF to black & white
Reduce Quality
Lower image quality for smaller file size
✏️ Edit & Modify
10 ToolsCrop PDF
Crop and trim page margins
Flatten PDF
Merge form fields into static content
Repair PDF
Fix damaged or corrupted PDF files
PDF to PDF/A
Convert to archival PDF/A standard
Remove Annotations
Delete all comments & highlights
Remove Hyperlinks
Strip all clickable links from PDF
Add Margins
Add white margins around PDF pages
Remove Metadata
Strip author/date/properties data
Embed Fonts
Embed all fonts for perfect display
Remove Blank Pages
Auto-detect and remove empty pages
👁️ OCR & Text Extraction
7 ToolsOCR PDF
Make scanned PDFs fully searchable
PDF to Text
Extract all plain text content from PDF
Extract by Page Range
Extract text from specific page ranges only
Make Searchable
Add invisible text layer for Ctrl+F search
Detect Language
Auto-detect the language of PDF content
Word Count
Count words, characters, pages in PDF
Find & Replace
Find text and replace across all pages
🖊️ Annotate & Mark Up
7 ToolsAdd Watermark
Text or image watermark on all pages
Remove Watermark
Remove existing watermarks from PDFs
Add Header & Footer
Custom header and footer text on pages
Add Page Numbers
Insert page numbers in any position
Add Signature
Add DRAFT, CONFIDENTIAL, APPROVED stamps
Highlight Text
Highlight important passages in PDF
Add Comments
Add sticky note comments to PDF pages
ℹ️ Metadata & Properties
5 ToolsView/Edit Metadata
View & edit PDF title, author, subject
PDF Info & Stats
Page count, file size, creation date
PDF Version Checker
Check & upgrade PDF version number
Set PDF Properties
Set open options, page layout, zoom level
Remove Metadata
Strip all hidden metadata for privacy
🛠️ Advanced & Specialist
8 ToolsCompare PDFs
Highlight differences between two PDFs
N-Up PDF
Print 2, 4, or 8 pages per sheet
PDF Poster Print
Split large PDF across multiple pages
PDF Outline/TOC
Generate table of contents from bookmarks
PDF Layers
View and toggle optional content layers
PDF/A Converter
Convert to ISO standard archival format
Booklet / Duplex
Arrange pages for booklet printing
PDF Thumbnails
Generate thumbnail previews of all pages
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❓ Frequently Asked Questions
Are all Core PDF Tools completely free?
Yes — every single tool listed here is 100% permanently free. No subscription, no account, no credit card required. These tools are free forever, supported by non-intrusive ads.
Do my PDF files get uploaded to a server?
No. All processing runs entirely inside your web browser using JavaScript and PDF.js. Your files are never sent to any server — they never leave your device at any point. This makes PDF Online Editor one of the safest PDF tools available.
What is the maximum file size supported?
All tools support PDF files up to 100MB. For very large files, use the Compress PDF tool first to reduce the size before processing with other tools.
Can I merge more than 2 PDFs at once?
Yes. The Merge PDF tool supports up to 50 PDF files at once. Simply upload all the PDFs you want to combine, drag to reorder them, and click Merge.
Will the compressed PDF look different?
The Compress PDF tool uses smart compression that reduces file size by 40–80% while maintaining visually identical quality. For maximum compression, use the optimizer preset which may slightly reduce image quality.
Does OCR work on all scanned PDFs?
The OCR tool works on any image-based or scanned PDF. It extracts text from images using Tesseract OCR engine running in your browser, making PDFs fully searchable and text-selectable. Supported in all major browsers.
Can I rotate just one page in a multi-page PDF?
Yes. The Rotate PDF tool lets you select individual pages or all pages and rotate them 90°, 180°, or 270° clockwise or counter-clockwise. Changes apply only to pages you select.