Can I merge PDFs with different page sizes in the same document?

Yes. Rankify preserves each page’s original dimensions when combining files, so a Letter appendix can follow an A4 report without forced scaling. Viewers like Adobe Reader display mixed sizes correctly when printing or scrolling. If you need uniform dimensions for print production, run individual files through a resize workflow first or print-to-PDF with consistent settings. For most business and academic uses, preserving native sizes is preferable to accidental cropping.

Is there a maximum number of PDFs I can join in one session?

Rankify does not cap the number of input files for free users. Practical limits come from device memory — merging twenty small PDFs on a phone works fine, while merging fifty scanned books may require a desktop with ample RAM. If you hit performance issues, merge in batches and combine the resulting files in a second pass. Local processing means no server-side queue or premium tier unlocking higher limits.

Will merging PDFs reduce quality or compress my images?

Merge PDF concatenates existing pages without re-encoding embedded images, so visual quality remains identical to the sources. Unlike some online tools that re-render pages and introduce compression artifacts, Rankify’s local merge respects original streams. Password-protected inputs may need unlocking first with our Unlock PDF tool. If file size grows too large after merging, follow up with Compress PDF rather than risking quality during the merge itself.

Can I insert one PDF in the middle of another instead of only appending?

Yes. Drag-and-drop ordering lets you place an exhibit PDF between report sections or sandwich a cover page before and after main content. Thumbnail previews help verify sequence before you commit. This flexibility supports legal binders, course packets, and architectural drawing sets where order matters as much as content. Reorder as many times as needed before downloading the final combined document.

Are my PDFs uploaded to Rankify servers during merge?

No. Files are read into browser memory and merged locally. Rankify’s privacy model assumes your documents may contain trade secrets, personal data, or sealed evidence. Keeping bytes off remote disks is a core product principle shared across all PDF tools on rankify.in. You can verify this by disconnecting the network after the page loads — merging still completes because no API call sends PDF content outward.

How do I merge password-protected PDF files?

Remove passwords first using Unlock PDF if you have the correct credentials, then add unlocked files to the merge queue. Attempting to merge encrypted streams without decryption usually fails or produces unreadable output in any tool. After merging, re-apply protection with Protect PDF if the combined document needs a new password before distribution to clients or counsel.

What is the fastest way to merge monthly invoices into one PDF for accounting?

Collect monthly PDF invoices in a folder, multi-select them in Rankify Merge PDF, sort chronologically by dragging filenames or thumbnails, and download one consolidated file for your bookkeeper. Because everything stays local, you avoid uploading sensitive financial records to unknown cloud services. Add page numbers afterward with Add Page Numbers PDF if your accountant requires consistent numbering across the combined packet.

What file types can I add to the merge queue?

Only PDF files are supported. Each input must be a standard PDF — images, Word files, or other formats need to be converted first (for example with Image to PDF or Word to PDF) before merging.

Can I rename the merged PDF before downloading?

Yes. Set a custom output filename so your download matches naming conventions for clients, courts, or internal filing systems instead of a generic default name.

Does merge change the page order inside each source PDF?

No. Pages within each file keep their original sequence. Merge only controls the order of whole files — use Remove PDF Pages or Split PDF first if you need to rearrange pages inside a single document.

What happens if one of my PDFs is corrupted?

A damaged PDF may fail to load or produce an incomplete merge. Open the problem file in a PDF viewer first, re-save it if possible, or export a fresh copy before adding it to the queue.

Can I merge on a Chromebook or locked-down work laptop?

Yes. Because merging runs entirely in the browser with no install, it works on Chromebooks and machines where IT blocks desktop software — as long as the PDFs are not blocked by browser policy.

Will bookmarks or table of contents carry over when I merge?

Merge concatenates page content. Bookmarks and outlines from source files may not survive as a unified navigation tree in the output — check the result if clickable TOC matters for your deliverable.

How do I put the newest invoice first when merging a batch?

After adding files, drag the newest PDF to the top of the list. Thumbnail or filename cues help confirm order before you click merge.

Is there a file size limit per PDF?

There is no fixed cap in the tool itself. Very large scans are limited by your device memory — if the browser slows down, merge in smaller batches and combine the results in a second pass.

Can I merge a single-page PDF with a hundred-page report?

Yes. A one-page cover sheet and a long report merge cleanly as long as both files load. Order the cover first in the queue so it appears on page one of the output.

Should I compress before or after merging?

Merge first if you need one file, then run Compress PDF on the combined output. Compressing sources individually before merge also works when only some files are oversized.

Do I need an account to merge PDFs?

No account or signup is required. Open the tool, add PDFs, merge, and download — the workflow is free and runs locally in your session.

Can I undo the merge order after downloading?

The download is final, but your source PDFs are unchanged on disk. Re-open the tool with the same files, adjust order, and merge again — no need to recover from the output file alone.

Merge PDF

Merge PDF — Free Online

Combine multiple PDF files into one document. Drag to reorder, preview page count, and download free in your browser. No signup required.

or drag and drop PDFs here

Private — files never leave your device

Merge PDF

Why merge PDF files online

Five PDF attachments in one email thread slow reviewers down and make it easy to miss a file. Merge PDF puts everything in a fixed order inside a single download — cover letter first, resume second, references last — without uploading your documents to a cloud queue.

One file, correct order

Combine PDFs from your device, drag to reorder, preview total page count, and download. No Acrobat license, no signup, no server upload.

Free · Drag reorder · Local merge

Drag-and-drop file order

Put the cover sheet before the report and exhibits after the main brief. Thumbnails show each file before you commit.

Custom output filename

Name the download application-packet.pdf or 2024-Q3-invoices.pdf instead of a generic merged.pdf default.

Merge stays local

PDF bytes never leave your browser. Financial statements and HR packets stay on your machine during the job.

No quality re-encoding

Pages concatenate as-is — embedded images are not recompressed during merge, so scans stay as sharp as the originals.

Features

Key features — Merge PDF

Everything below the converter reflects how Merge PDF actually works — settings, inputs, outputs, and privacy.

Multi-file PDF queue

Add two or more PDFs in one session. Each file shows a thumbnail preview and page count before merge.

Reorder before merge

Drag files up or down until the sequence matches how a court, client, or teacher should read the packet.

Rename the output

Set the download filename to match your filing system — matter numbers, client codes, or course week labels.

Mixed page sizes OK

Letter appendices can follow A4 reports. Each page keeps its original dimensions from the source file.

Browser-side merge

Concatenation runs in your tab with JavaScript PDF libraries. Disconnect after page load and merge still works.

Chain with other tools

Unlock password PDFs first, merge, then compress or add page numbers on the finished file.

How it works

How to use Merge PDF

Follow these steps in the converter above — the UI matches this workflow.

1
Add Multiple PDF Files to the Queue
Select two or more PDFs from your device. Each file loads locally — Rankify never uploads your documents.
Tip: Double-check file order before processing — reordering after export wastes time.
2
Drag and Drop to Set Merge Order
Reorder files so chapters, invoices, or appendices appear in the correct sequence in the combined PDF.
Tip: Preview the output once in your normal PDF viewer before sending to clients or portals.
3
Preview Combined Page Count
Review total pages and file order before merging to catch mistakes early and avoid re-processing.
Tip: On mobile, use Files or gallery pickers and confirm the last page in the queue.
4
Download Your Merged PDF File
Click merge to produce one unified PDF ready for email, printing, court filing, or archival storage.
Tip: If the result exceeds upload limits, run Compress PDF on the finished file.

Formats

Supported file types

Inputs and outputs for Merge PDF — based on the live converter.

PDF.pdf

PDF is accepted as input for this workflow. Add two or more PDF files from your device — only PDF input is accepted. Drag files to set the merge order, optionally rename the output, and preview the combined page count. The tool concatenates pages in your browser and downloads one merged PDF without sending files to a server. Use sources exported directly from the app that created them when possible — re-saving through unrelated tools can flatten layers or strip metadata you may need later.

Use it for

PDF exports from your authoring app
Files that open correctly in your browser preview
Single-document sessions on desktop or mobile

Single merged PDF.

Benefits

Benefits of Merge PDF

Why teams pick a browser tool instead of installing another desktop suite for one-off PDF tasks.

One focused workflow

Merge PDF does one job well instead of burying the action inside a suite you open twice a year.

Accurate to the UI

Documented inputs (PDF) and outputs (Single merged PDF.) match the live converter.

Local processing

Files stay in browser memory during conversion — no account and no upload queue.

Works across devices

Modern Chrome, Edge, Firefox, and Safari on desktop and mobile can run the same URL.

Chains with other PDF tools

Follow up with merge, split, compress, rotate, protect, or watermark steps on the same site.

Free without watermarks

Exports are clean for client, school, and office submissions — no forced trial branding.

Separate PDFs vs one merged file

Without this tool

Multiple attachments in email threads
Readers may open files out of order
Harder to verify total page count
More clicks for reviewers

With Rankify

Single attachment with fixed sequence
One scrollable document
Combined page count visible upfront
Easier handoff to clients and courts

Use cases

Who uses Merge PDF

Real scenarios where this tool saves time compared with desktop software or upload-based converters.

Job application packets

Cover letter, resume, and references in one attachment — recruiters open one file instead of three.

Legal exhibit binders

Exhibits A through F in court order inside a single PDF before e-filing.

Weekly class handouts

Five daily worksheets become one printable packet for parents.

Monthly invoice bundles

Vendor PDFs sorted by date for the accountant without emailing twelve separate files.

Thesis chapter submissions

Literature review, methods, and appendices merged to match the university portal PDF-only rule.

Onboarding document packs

Policy PDFs, tax forms, and benefits summaries ship to new hires as one download.

After Image to PDF

Merge photo-PDF batches with existing Word or scan PDFs into one submission file.

Print shop drop-offs

One merged file for the copier instead of a USB stick full of loose PDFs.

Compare

Why Rankify for Merge PDF

Desktop suites, mobile apps, and upload-based websites all offer ways to handle PDF tasks — but the trade-offs differ. Merge PDF on Rankify targets the middle ground: real controls from the live UI, no install, and files that stay in your browser for standard PDF workflows.

Criteria	Rankify	Offline software	Typical online tools
Install required	No — runs in the browser	Yes — Acrobat, Word, etc.	Usually no
Account / signup	Not required	Often tied to license login	Frequently required for saves
File upload to server	No — local processing	No	Yes — typical model
Watermark on free export	No watermark	Depends on license	Common on free tiers
Works on locked-down PC	Yes if browser allowed	Often blocked by IT	Yes, but uploads may violate policy
Cost for occasional use	Free	Subscription or license	Free with limits or ads

Privacy

Privacy and security

How Merge PDF handles your files in the browser.

Rankify Merge PDF is built for people who need a result now but do not want documents sitting on a stranger's server. Load the page, add files, process, download — the bytes stay in browser memory on your machine. We do not track file contents for conversion purposes. Treat the downloaded PDF like any sensitive file: share only with intended recipients and store it according to your retention rules.

Browser-side processing

Documents decode and export happen in your tab using client-side code, not a remote rendering farm.

No upload storage

We do not keep copies of your PDFs on server disks after the tab closes.

No registration gate

There is no login step that links your identity to the files you process.

Sensible for sensitive work

Local processing fits policies that discourage sending PII to unknown SaaS converters.

FAQ

Frequently asked questions

Common questions about Merge PDF — inputs, output, privacy, and workflow tips.

Open Rankify Merge PDF, add each PDF from your computer, drag files into the desired order, and click merge. The tool concatenates page streams inside your browser using JavaScript PDF libraries — no license, no Creative Cloud subscription, no desktop install. This is ideal for students joining lecture handouts, HR teams compiling onboarding packets, and freelancers delivering multi-part proposals. The merged download is a standard PDF readable anywhere.

Ready to use Merge PDF?

Combine multiple PDF files into one document. Drag to reorder, preview page count, and download free in your browser. No signup required. Open the converter above, process your file, and download in minutes — free, private, and aligned with the live tool.

Split PDF first

Criteria

Rankify

Offline software

Typical online tools

Install required

No — runs in the browser

Yes — Acrobat, Word, etc.

Usually no

Account / signup

Not required

Often tied to license login

Frequently required for saves

File upload to server

No — local processing

Yes — typical model

Watermark on free export

No watermark

Depends on license

Common on free tiers

Works on locked-down PC

Yes if browser allowed

Often blocked by IT

Yes, but uploads may violate policy

Cost for occasional use

Free

Subscription or license

Free with limits or ads

Merge PDF — Free Online

One file, correct order

Drag-and-drop file order

Custom output filename

Merge stays local

No quality re-encoding

Multi-file PDF queue

Reorder before merge

Rename the output

Mixed page sizes OK

Browser-side merge

Chain with other tools

Add Multiple PDF Files to the Queue

Drag and Drop to Set Merge Order

Preview Combined Page Count

Download Your Merged PDF File

Use it for

One focused workflow

Accurate to the UI

Local processing

Works across devices

Chains with other PDF tools

Free without watermarks

Separate PDFs vs one merged file

Without this tool

With Rankify

Job application packets

Legal exhibit binders

Weekly class handouts

Monthly invoice bundles

Thesis chapter submissions

Onboarding document packs

After Image to PDF

Print shop drop-offs

Browser-side processing

No upload storage

No registration gate

Sensible for sensitive work

How do I combine multiple PDF files into one free without Adobe Acrobat?

Can I merge PDFs with different page sizes in the same document?

Is there a maximum number of PDFs I can join in one session?

Will merging PDFs reduce quality or compress my images?

Can I insert one PDF in the middle of another instead of only appending?

Are my PDFs uploaded to Rankify servers during merge?

How do I merge password-protected PDF files?

What is the fastest way to merge monthly invoices into one PDF for accounting?

What file types can I add to the merge queue?

Can I rename the merged PDF before downloading?

Does merge change the page order inside each source PDF?

What happens if one of my PDFs is corrupted?

Can I merge on a Chromebook or locked-down work laptop?

Will bookmarks or table of contents carry over when I merge?

How do I put the newest invoice first when merging a batch?

Is there a file size limit per PDF?

Can I merge a single-page PDF with a hundred-page report?

Should I compress before or after merging?

Do I need an account to merge PDFs?

Can I undo the merge order after downloading?

Split PDF

Compress PDF

Remove PDF Pages

Add Page Numbers

Protect PDF

Image to PDF

Ready to use Merge PDF?

Merge PDF — Free Online

One file, correct order

Drag-and-drop file order

Custom output filename

Merge stays local

No quality re-encoding

Multi-file PDF queue

Reorder before merge

Rename the output

Mixed page sizes OK

Browser-side merge

Chain with other tools

Add Multiple PDF Files to the Queue

Drag and Drop to Set Merge Order

Preview Combined Page Count