File

PDF Merge

Combine multiple PDF files into a single document in your browser. Files stay on your device — nothing is uploaded. Drag files in, reorder them with up and down buttons, set a custom output filename, and download the result. No signup, no client install. Works on Chrome, Edge, Firefox, Safari, and Brave on the desktop, and on iOS and Android mobile browsers. Common use cases include bundling contract attachments, stitching together report chapters, organizing scanned documents, consolidating monthly invoices, packaging lecture handouts, preparing tender submissions, and packaging resumes with supporting documents.

  • All processing runs in the browser. Files are not uploaded to a server and no account is required.
  • The merged file contains no watermarks, ads, or tool branding.
  • Drag and drop files onto the upload area, or pick them with the file selector.
  • Reorder files with up and down buttons. The merged result follows the list order exactly.
  • Each file shows its page count and size so you can verify the queue before merging.
  • Page content (fonts, images, vector graphics, and text) is preserved, so the merged PDF stays searchable and copyable.
  • Works on desktop and mobile browsers with no extra software.
tools/PDF Merge
0 files

Drop PDFs here or click to choose files

Add at least 2 PDF files. Everything is processed locally in your browser.

Files

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Total pages

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Output size

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Pick and reorder PDFs above. The merged result will appear here.

Commands

Overview

Combines multiple PDFs into one document, locally in your browser. Fits common workflows like signing contracts with attachments, archiving multi-chapter reports, organizing scans, consolidating invoices, and packaging tender or application bundles.

  1. 01

    Batch merging

    Add multiple PDFs at once — contract attachments, scan batches, multi-chapter reports, or a month of invoices — and combine them into a single document.

  2. 02

    Reorder before merging

    Use up and down buttons to set the exact final order. The merged result follows your list, so chapters and attachments stay in the order you expect.

  3. 03

    Page content preserved

    Fonts, embedded images, vector graphics, and text content are copied into the merged PDF. The output remains searchable and copy-pasteable.

  4. 04

    Local processing

    All merging happens in your browser. File bytes never leave your device, which suits contracts, ID scans, medical records, and financial statements.

  5. 05

    Custom output filename

    Set the output filename before merging. Include a project name, client name, or date to make later retrieval easier.

  6. 06

    No watermark

    The output contains no watermarks, ads, or promo pages, so it can be used directly in business and formal contexts.

  7. 07

    Cross-platform

    Built on standard browser APIs. Runs on Windows, macOS, and Linux desktops, as well as iOS and Android mobile browsers.

  8. 08

    Encrypted PDF detection

    When a password-protected PDF is loaded, the tool shows a clear error message instead of silently failing or producing a broken file.

How to use

Adding files, ordering them, and downloading the result usually takes only a few seconds.

  1. 01

    Click "Select PDFs" or drop multiple PDF files onto the upload area. Add at least two files.

  2. 02

    Review the file list. Each file shows its page count and size, which makes it easy to confirm the selection.

  3. 03

    Use the up and down buttons to set the order. Remove any file you no longer need.

  4. 04

    Enter a name in the "Output filename" field, for example contract-2024.pdf or quarterly-report.pdf.

  5. 05

    Click "Merge". Processing runs locally and usually finishes within a few seconds.

  6. 06

    When the merge is done, the output panel shows the filename, size, and total page count. Click "Download PDF" in the command bar to save it.

  7. 07

    If the result is not what you wanted, adjust the order or the file list and merge again. The original files are never modified.

Details

Designed around the day-to-day flow of combining several PDFs into one.

  • Drag and drop, or click to add multiple PDFs
  • No fixed limit on file count; the practical cap is browser memory
  • Reorder files with up and down buttons
  • Remove any single file from the list
  • Clear the entire queue with one click
  • Per-file page count, file size, and filename are shown in the list
  • Live totals: file count, page count, and merged output size
  • All processing happens in the browser; nothing is uploaded
  • Custom output filename, with automatic .pdf suffix and illegal-character filtering
  • Clear error message when an encrypted PDF is loaded
  • One-click download with no server round-trip
  • Compatible with Chrome, Edge, Firefox, Safari, and Brave, plus mobile browsers
  • Free to use, with no watermarks and no ads

Use cases

Everyday situations where several PDFs need to be combined into one.

  1. Contracts with attachments

    Combine the main contract, appendices, supplements, signature pages, and attachment lists into a single document for legal review or client delivery.

  2. Multi-chapter reports

    Stitch together separately authored chapters of a project report, year-end summary, quarterly financial, or academic paper into one continuous document.

  3. Scanned document organization

    Consolidate loose scans, contract copies, ID scans, and medical reports by date or category for archival and audit prep.

  4. Invoice rollups

    Bundle a month of electronic invoices into one file for expense reporting, tax filing, and accounting reconciliation.

  5. Lecture handouts

    Merge slides, PDF exports, problem sets, and answer keys distributed across sessions into a single teaching packet.

  6. Tender and applications

    Combine the cover, table of contents, body, attachments, and qualification documents in the order required by the submission spec.

  7. Resumes with supporting materials

    Package the resume, portfolio, recommendation letters, transcripts, and degree certificates into one application file.

  8. Travel expense receipts

    Bundle flight tickets, hotel invoices, and meal receipts from a business trip into one expense attachment.

  9. Legal case files

    Group litigation materials, judgments, evidence files, and appendices by case number into a complete case file.

  10. Medical records

    Combine test reports, prescriptions, and imaging notes from different clinics into one record for second opinions or insurance claims.

See also

If you only need selected pages before merging, extract them first with PDF Split , then merge the cleaned parts and protect sensitive packets with File Encryption before sharing. For more PDF, document, image, and media utilities, browse the File category page.

Best practices

Merging is simple, but the order, naming, and quality of the source files all affect the result.

  • Open each PDF locally first to check page orientation and content before merging.
  • Name source files with a leading sort key (01-cover.pdf, 02-toc.pdf, 03-body.pdf) so any tool will list them in the right order alphabetically.
  • Remove duplicate or blank pages before merging by using a split tool first. It is easier than editing the merged result.
  • Use a "project + date" filename like contract-acme-2024-06.pdf for easier retrieval and version control.
  • For scans, confirm that every page is rotated correctly before merging.
  • After merging, open the result locally and check page-number continuity and overall ordering.
  • Encrypted PDFs must be unlocked first. If you set the password yourself, remove it before merging and re-add it after.
  • PDFs over 100 MB use a lot of browser memory. Batch them or compress individual files first.
  • If any source PDF contains form fields, validate the field behavior after merging with a professional PDF tool.
  • The merged file size is roughly the sum of inputs. If you need to email it or upload to a size-limited system, run it through a PDF compressor next.
  • When handling sensitive content, use a private browsing window or offline environment, and clear your browser download history afterwards.

Limitations

The tool focuses on fast in-browser merging. Watch out for these edge cases in critical workflows.

  • Password-protected PDFs cannot be merged directly. Decrypt them first with a PDF unlock tool or with Adobe Acrobat.
  • Corrupted, incomplete, or non-standard PDFs may fail. Repair them with Adobe Acrobat, Preview, or similar tools first.
  • Very large PDFs (hundreds of MB combined, or over 1 GB) use a lot of browser memory. Merge in batches to avoid tab crashes.
  • PDF form fields, annotations, and digital signatures may not survive merging. If the document depends on them, revalidate the output in a professional PDF tool.
  • Document outlines (bookmarks) and cross-file page jumps do not transfer to the merged result.
  • The tool does not recompress or optimize content. Output size is roughly the sum of inputs. Pair with a PDF compressor if needed.
  • A few strict PDF/A, PDF/X, or DRM-protected files may have compatibility issues.
  • For page-level deduplication, reordering, or extraction, pair this with a PDF split tool.
  • Output metadata (title, author, creation date) is regenerated by the tool and does not come from the source files.
  • Some scanner-generated PDFs use unusual encodings or skip standard font embedding, which can produce small rendering differences across devices.

FAQ

Common questions about usage, file safety, the merge result, cross-platform support, and how this compares to paid services.

Are my PDFs uploaded to a server?

No. All merging happens locally in the browser. File bytes never leave your device. You can confirm this by disconnecting from the network — the tool still works.

Is this tool free? Do I need an account?

Yes, it is free. No account, no login, no subscription. There are no daily merge limits.

How many PDFs can I merge at once?

There is no fixed limit; the practical cap is browser memory. Dozens of moderately sized PDFs (under 10 MB each) usually merge fine. For many high-resolution scans, batch the work.

Will the merged file have a watermark?

No. The output has no watermarks, logos, ads, or promo pages, so it can be used directly for contracts, business sending, and formal submissions.

Will the merged file keep the original structure?

Page content, fonts, and images are preserved, and the text remains searchable and copyable. Document-level features like bookmarks, cross-file links, form fields, and digital signatures may not survive merging.

Can I merge encrypted PDFs?

No. Password-protected PDFs must be decrypted first. Use a dedicated PDF unlock tool or Adobe Acrobat. The tool shows a clear error when it detects encryption.

Can I select specific pages to merge?

The tool merges whole files. To pick specific pages, use a PDF split tool first to extract them as standalone PDFs, then merge those.

Does merging affect text search or OCR?

No. The text content of each source PDF is copied into the merged file along with the pages, so it remains searchable and copyable.

Is the output compressed?

No. The tool does not recompress content. Output size is roughly the sum of input sizes. Use a dedicated PDF compressor if you need to shrink the file.

Which PDF versions are supported?

PDF 1.4, 1.5, 1.6, 1.7, and 2.0. A small number of strict PDF/A, DRM-protected, or unusually encoded files may be incompatible.

Does it work on phones and tablets?

Yes. iOS Safari, Chrome, Edge, Firefox, and Android Chrome all support it. Mobile memory is limited, so avoid very large files on phones.

How does it compare to iLovePDF, SmallPDF, or Adobe Acrobat?

The main difference is processing: this tool runs locally in your browser; online services usually upload to a server and return the result. Feature-wise, this tool focuses on merging and does not include OCR or PDF-to-Word conversion.

I got the order wrong. How do I fix it?

Use the up and down buttons on each row in the file list. If you already merged, just adjust the order and click "Merge" again. The original files are never modified.

Is this compliant with corporate data policies?

Because processing is local with no uploads and no logging, it usually fits internal privacy requirements. Check the specifics of your industry policy if needed.

How do I make sure the merged PDF renders consistently?

Fonts embedded in the source PDFs are preserved, so rendering is consistent on most devices. If a source uses system fonts instead of embedded ones, there may be small variations across operating systems.

Related tools

Pair this with file encryption, image compression, Base64 round-trips, and EXIF cleanup to cover the full file workflow.