I hate this pattern. "Free" tools that require an email are not free — they are harvesting leads. Smallpdf gets your email, then spams you until you either pay or unsubscribe. iLovePDF does the same thing. Adobe's online merge tool requires an Adobe account, which means giving them your name, email, and probably a phone number for two-factor authentication. All of this just to stick two PDFs together.
Truly Free PDF Tools does not ask for your email. There is no account. No "sign up to download." No confirmation link. You upload your files, click merge, download the result. That is it. The whole transaction is between you and your browser. I never know who you are or what you merged. Here is how it works and why every other tool makes merging so painful.
Smallpdf, iLovePDF, and Adobe: The Email Harvesting Problem
Let me show you exactly what happens when you try to merge PDFs on these sites. On Smallpdf, after you upload your files, a pop-up appears: "Create a free account to download your merged PDF." You can bypass it by using a fake email, but then you have to click a verification link. That link tracks your IP address. They know you merged a file. They add you to their retargeting ads. I have seen Smallpdf ads follow me for weeks after merging a single document.
iLovePDF is more aggressive. Their free merge tool limits you to two merges per day, and after the second merge, they show a full-screen overlay: "Upgrade to Premium for unlimited merges — $48/year." You cannot dismiss it without clicking a tiny "X" in the corner. That is dark pattern design. Adobe's online merge tool is even worse: you cannot use it at all without an Adobe account. Creating an account takes five minutes and requires email verification. Then they try to upsell you to a free trial of Acrobat Pro.
Sejda does not require an email, I will give them credit. But their free tier limits you to three tasks per hour and 50 pages per merge. Merge two 30-page PDFs? That is 60 pages. Sejda rejects it. PDF24 is genuinely free and does not require email, but again, it is desktop software. You have to install it.
Truly Free PDF Tools has none of this. No email. No account. No page limits. No installation. And because the merge happens locally, your files never leave your computer. Smallpdf stores every merged file on their servers for 24 hours. That means if you merge a confidential contract, a copy sits on Smallpdf's AWS infrastructure. I do not want that risk for myself, so I do not put that risk on you.
Step-by-Step: Merge PDF Files in Under 30 Seconds
Here is the fastest way to combine multiple PDFs into one.
1. Go to trulyfreetools.com and click PDF Merger. The page loads instantly. No splash screen. No "sign up to continue." Just a clean interface with an upload area.
2. Drag and drop your PDF files. You can drag multiple files at once. The tool accepts PDFs only — if you try to upload a JPG, it will warn you. Use the Image to PDF Converter for images first, then merge.
3. Arrange the files in the correct order. The merger shows a list of your files with up/down arrows. Click and drag to reorder. The first file in the list becomes page 1 of the merged PDF. The second file becomes the next set of pages, etc. I have seen people merge cover pages, then contracts, then appendices. The order matters.
4. Check the page counts. The tool displays the page count for each file. Example: "Cover.pdf (1 page)", "Contract.pdf (12 pages)", "Signature.pdf (1 page)". Total pages after merge: 14. This helps you catch mistakes before merging.
5. Click "Merge PDF." The WebAssembly engine combines the files. It copies pages from each source PDF into a new PDF document. This takes 2-5 seconds for most merges. For very large files (100+ pages total), maybe 10 seconds. No progress bar needed because it is so fast.
6. Preview the merged PDF. Before downloading, click "Preview." The merged PDF opens in a new tab. Scroll through to make sure pages are in the right order and no pages are missing. I always preview because once you close the tab, the merged file is gone from memory (we do not store anything).
7. Download the merged PDF. Click the download button. The file saves as "merged.pdf" by default. You can rename it anything. No watermark. No footer. No "created with Truly Free PDF Tools" stamp.
8. Merge again immediately. There is no limit. No "you have used 2 of 2 merges." Merge ten different combinations in a row. The tool does not track you because there is no server to track you.
Why Truly Free PDF Tools Is Actually Free
Let me explain the economics. I run Google AdSense on the homepage and blog. When you visit, you might see an ad for Grammarly or NordVPN. If you click it, I get a few cents. That is it. No ads on the merger tool itself. I made that decision because interrupting a merge with an ad would be annoying, and annoying users do not return. The ad revenue is enough to pay for hosting. I do this in my spare time.
The reason I can keep it free while Smallpdf charges $108 a year is overhead. Smallpdf has 50+ employees, an office in Switzerland, and a sales team. They raised venture capital. They need to return 10x to their investors. I have zero employees, zero office space, and zero investors. My cost is literally just the domain name and a $10/month hosting plan for the blog.
The PDF tools themselves are static HTML/JavaScript files served from a CDN. That costs almost nothing.
Privacy matters more to me than profit. Because the merge happens locally, your files never touch my server. I cannot see them. The government cannot subpoena them. A hacker cannot intercept them. Compare that to iLovePDF, which stores your merged files for 24 hours "for quality assurance." That means an iLovePDF employee could theoretically open your business plan. No thank you.
Frequently Asked Questions
Do I need to create an account to merge PDFs?
No. Never. There is no account system on trulyfreetools.com. I do not have a database of users. I do not know your email. I cannot send you a password reset link because there is no password. You just use the tool and leave.
What is the maximum number of files I can merge at once?
There is no hard limit, but your browser may slow down if you merge more than 20 files at a time. I have merged 15 files totaling 250MB successfully. The tool shows a warning if you try to merge more than 30 files, but it will still try. If your browser crashes, merge in batches of 10.
Will the merged PDF have bookmarks from the original files?
No. The merger does not preserve bookmarks (also called outlines). It only preserves the pages and their content. If you need bookmarks, you will need a more advanced tool like Adobe Acrobat. For most users, bookmarks are not essential.
Can I merge PDFs of different page sizes (e.g., letter and legal)?
Yes. The merger preserves each page's original dimensions. A letter-sized page (8.5x11) will remain letter-sized. A legal-sized page (8.5x14) will remain legal-sized. When viewed on screen, the page sizes may look different, but that is normal. Printing may require manual paper selection.
How does your merger compare to Smallpdf's paid merger?
For basic merging (combining full PDFs in order), they are identical. Smallpdf's paid version allows you to select specific pages from each file (e.g., pages 1-3 from file A, pages 5-7 from file B). My tool does not have that — you merge whole files only. For 95% of users, that is fine. If you need page-level selection, use the splitter first to extract the pages you want, then merge.
Why does Smallpdf ask for my email even for a free merge?
Because you are the product. Smallpdf collects emails to build their marketing list. They send you "helpful tips" that are really just upsells. They also track which tools you use so they can target ads to you. I do not do any of that because I do not have your email. It is impossible for me to spam you. That is a feature.
Try the merger now. Combine two PDFs in five seconds. No email. No account. If you see a pop-up asking for your credit card, you are on the wrong site.
