Back to Tools

常见问题 (FAQ)

Are my PDF files safe?
Absolutely. All processing and merging of PDF files happen locally inside your web browser (client-side). We do not upload, store, or transmit any of your files to our servers.
Is there a file size or quantity limit?
There are no strict limits imposed by our tool, but performance depends entirely on your computer's available RAM. Merging dozens of extremely large PDF files simultaneously might cause your browser to slow down or run out of memory.
In what order are the pages merged?
The files are appended in the exact order they appear on your screen (from top to bottom). You can easily rearrange them using the Up and Down arrow buttons next to each file before you click the Merge button.

global.related_tools

DocumentMedia

PDF to Image Converter

Extract images from PDF by converting each page into a high-quality JPG file. A free and secure PDF to image converter.

Document

PDF Organizer

Easily extract, reorder, rotate, or delete pages from your PDF documents online. Fast, secure, and free PDF organizer tool for your browser.

Document

Image to PDF

Instantly convert JPG and PNG images into a single PDF document. Automatically centers and resizes images to fit standard A4 pages securely.

Document

PDF to Word

Extract text from scanned PDFs and images to editable Word documents securely using local AI OCR. No data uploaded, 100% private.

Document

Word Formatter

Easily standardize fonts, sizes, and line spacing in your .docx files online for free. Preserve images and tables perfectly. Try our Word formatter today!

Document

Watermark Generator

Protect your documents and photos by adding custom text or image watermarks easily. Secure, fast, and free online watermark generator.