All your PDF business on one platform.
Simple, efficient, yet affordable!
All Edit Tool
Combine, rotate, extract, and delete pages from multiple documents together.
Get StartedMerge PDFs
Combine multiple files into a single document in any order.
Get StartedRearrange Pages
Drag and drop page previews to reorder pages in your document.
Get StartedCompress PDF
Reduce the file size of your PDF documents with customizable quality levels.
Get StartedEdit PDF Text
Modify existing text layers, append new text, or fill out forms.
Get StartedRotate Pages
Fix upside-down pages or rotate document orientation.
Get StartedDelete Pages
Remove unwanted pages from your PDF file instantly.
Get StartedExtract Pages
Select and save individual pages as a new standalone PDF file.
Get StartedWatermark PDF
Overlay customizable text watermarks with custom rotation and transparency.
Get StartedAdd Page Numbers
Automatically label page numbers in custom formats, colors, and headers/footers.
Get StartedAll-in-One PDF Editor
Rearrange, rotate, delete, and edit pages in a single interface.
100% Offline Privacy
No upload bandwidth used. Files stay in your browser. Perfect for HIPAA compliance, tax data, and legal files.
Rearrange & Rotate
Drag and drop pages to reorder them. Rotate pages that were scanned upside down. Remove unwanted pages.
Merge Multiple Files
Combine multiple PDFs into a single document instantly. Combine templates, signatures, and attachments.
Frequently Asked Questions
Everything you need to know about MellowPDF’s privacy, capabilities, and local execution.
Absolutely. MellowPDF is designed with a serverless execution flow. Every operation (merging pages, editing text, watermarking, page rotation, and extraction) runs 100% locally in your web browser. Your document files are never transmitted to any external servers, databases, or API relays.
You can verify this easily by disconnecting your internet connection (Wi-Fi/Ethernet) and using the editor completely offline. You will find that all features—including rendering PDF thumbnails, text editing, and PDF compilation—continue to work. You can open the Privacy Verification link in the footer to read more about this test.
No, there are no limitations. Since the processing runs locally on your own computer, the speed and page count limits are only restricted by your computer's RAM and CPU performance. It is completely free for personal and commercial projects.
When you edit a page, MellowPDF uses PDF.js to extract the text coordinates and font styling properties. When you save your modifications, the compiler masks the original text using a solid white background and redraws the new text in its place, using font styles matched to the document's original typography.
