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Merge PDF Online

or drop files here

Combine several separate PDF files into one unified, multi-page document directly in your browser. Perfect for merging contracts with attachments, combining scanned receipt bundles, or assembling portfolio submissions.

Combine PDF documents seamlessly

Choose multiple PDFs and review the displayed file sequence. Pages are copied natively with embedded text, graphics and original rotation. The merger does not rebuild those pages as JPEG screenshots.

Batch document assembly

Merge invoices from multiple vendors into a single filing package, combine scanned identification documents for applications, or assemble multi-chapter reports that arrived as separate exports.

Bounded batch assembly

Merge up to 20 files, with at most 500 pages and 100 MB combined input. A single file must stay below 50 MB. Document-level bookmarks and shared form relationships are not carried into the combined document.

Complete client-side privacy

Financial statements, legal contracts and confidential proposals remain on your machine throughout the entire merge process. No bytes are transmitted to cloud endpoints.

Technical references: MDN Canvas API · MDN Blob API

Merge PDF Files FAQs

You can select up to 20 PDF files to merge into a single document. Each file can have multiple pages.
Native page copying retains the existing image streams without JPEG re-encoding and keeps selectable source text in the merged file.
Yes. Pages are assembled in the exact sequence you select your files. Rearrange file order before merging to control page sequencing.
Yes. A scanned page is copied with its embedded scan image. It stays image-based unless the source already included an OCR text layer.
Yes. Output is a standard PDF document compatible with Adobe Acrobat, Apple Preview, web browsers and mobile PDF viewers.
PDFs must be unlocked before merging. If a document requires a password, unlock it first using your PDF reader.
Merge input is capped at 50 MB per file, 100 MB combined and 500 pages overall. Smaller batches are preferable on memory-constrained phones.
Yes. The tool works in modern mobile browsers including Safari on iOS and Chrome on Android.
No. The output is clean with zero watermarks, timestamps or third-party branding.
Yes, the merger handles documents with mixed page dimensions and orientations, preserving each page layout exactly as it appears in the source files.

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