Merge PDF Documents
Combine multiple files into one seamless document. 100% local, no uploads.
MERGE ENGINE
Secure Sequence Processing
Add PDF Files
Protocol
WASM-Local-Execution
Data Cloud Sync
Disabled
Residency
User Device
Technical Privacy Audit (Verify for Yourself)
Step 01
Press F12 or Right-Click > Inspect to open Developer Tools.
Step 02
Click the 'Network' tab.
Step 03
Perform any action on this page (Convert, Merge, or Sanitize).
Step 04
The Proof: Observe that no data is sent to any external server. All processing is locked within your browser's local sandbox via WebAssembly (WASM).
Local Security Verification Active: 0 Bytes Transmitted
How it Works
Click 'Add PDF Files' and select two or more PDF documents from your device.
Drag the file cards to arrange them in your desired merge order.
Click 'Merge & Download PDF' — the browser combines them instantly using pdf-lib.
Download the merged PDF. Nothing was sent to any server at any point.
Zero Cloud Risk
Your files are never uploaded. pdf-lib runs entirely in your browser's RAM, making this the safest way to merge confidential documents.
Merge PDF Files — Free, Private, No Upload Required
Combine multiple PDF files into a single document entirely inside your browser. No file size limits, no account required, and no data ever transmitted to a server. Uses pdf-lib compiled to WebAssembly for instant local merging — 10x faster than cloud-based alternatives because there is no upload or download wait time.
Drag-to-Reorder Before Merging
Arrange your PDFs in any sequence before merging. Drag file cards up or down to set the exact page order you need. Legal documents, reports, and multi-chapter files can be organized precisely before the merge operation.
Zero Upload — Full Privacy
Unlike iLovePDF, Smallpdf, and Adobe Acrobat Online — which transmit your files to remote servers — FixIt Localy merges PDFs using pdf-lib entirely in your browser's RAM. Confidential contracts, financial statements, and personal documents never leave your device.
No File Size Limits
Cloud-based tools impose file size limits (typically 50–100MB) to control their bandwidth costs. Since FixIt Localy processes locally, the only limit is your device's available RAM — enabling you to merge large architectural drawings, legal bundles, and multi-hundred-page documents.
How it Works
Click 'Add PDF Files' and select two or more PDF documents from your device.
Drag the file cards to arrange them in your desired merge order.
Click 'Merge & Download PDF' — the browser combines them instantly using pdf-lib.
Download the merged PDF. Nothing was sent to any server at any point.
Protocol
pdf-lib WebAssembly (Browser)
Data Cloud Sync
None — Zero Transmission
Residency
Browser RAM Only
Frequently Asked Questions
Q: Is there a file size or page limit for merging?
No server-imposed limit exists. Because processing happens entirely in your browser's RAM, the practical limit is your device's available memory. Modern computers handle PDFs of several hundred pages without issue.
Q: Does merging PDFs reduce quality?
No. FixIt Localy performs a lossless merge using pdf-lib. All original content — text, images, fonts, vector graphics, and formatting — is preserved exactly as it appears in each source file.
Q: Does it preserve hyperlinks, bookmarks, and annotations?
Yes. The pdf-lib merge engine copies the internal structure of each PDF including internal hyperlinks and annotations. Complex interactive elements may require verification after merging.
Q: Can I merge password-protected PDFs?
You need to remove the password protection before merging. Once unlocked, the PDF can be added to the merge queue and processed normally.
Q: Does it work on mobile phones?
Yes. FixIt Localy runs in any modern browser — Chrome, Safari, Firefox, and Edge — on both desktop and mobile devices including iOS and Android.
Q: Is the merged PDF compatible with Adobe Acrobat?
Fully compatible. The output is a standard PDF file that opens correctly in Adobe Acrobat, Chrome's built-in viewer, macOS Preview, and all other PDF readers.
Q: Do I need to create an account?
No account, no sign-up, no email address required. Open the tool, add your files, merge, and download. That is the entire workflow.
Q: Why is local merging faster than cloud tools?
Cloud tools require uploading all your files, waiting for server processing, and then downloading the result. Local merging starts instantly and finishes in seconds — even for large files — because the processing happens on your own CPU.
Privacy Guarantee
Zero Data Retention Policy
All document processing happens inside your browser sandbox using WebAssembly. No files are ever uploaded or stored.