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Email two pdfs as one attachment

Join the two files into one PDF, then check the size before you send. Merging takes a few seconds in a browser tab, and the result is a single attachment that arrives in one piece. If the combined file is too heavy for the mailbox, compress it to a target rather than zipping it.

Merge 2 pdfs

Merge, then check the size

The two-file merge is the whole job. Add both PDFs, set which comes first, and download the result. Nothing is uploaded, so the documents never leave your machine, which matters more than usual for anything going out by email.

Look at the size of what comes back before you attach it. Two files that each squeaked through on their own make one file that does not, and finding that out from a bounce message wastes a round trip.

What the mail limits are

Gmail draws its line at 25 MB per message and offers a Drive link past it. Other providers sit near that, and corporate mail servers are often set lower without telling anyone. The receiving server has its own limit as well, which can be stricter than yours.

Attachments are also encoded for transport, which inflates them by roughly a third on the wire. A file that looks comfortably inside the limit on disk can land outside it, so leave room rather than aiming at the number.

If the merged file is too big

Compress it to a target instead of zipping. A zip saves almost nothing on a PDF because the file is already compressed inside, while the compression tool works on what is actually taking the space.

It runs several methods at once, races them to the size you asked for, and reads every candidate back before offering it, so the text has to still be selectable. On a public test corpus of 120 files the median size reduction was 59.2%, and scans did best of all.

What the merge keeps and drops

Every page arrives intact: the text stays selectable, images keep their pixels, and page sizes are unchanged. The output is reopened and compared against both sources page by page before you can download it.

Bookmarks, interactive form fields, custom page labels and attachments do not survive, and the tool names which of your files carry them before it runs. A filled form should be flattened first, or the answers go with the fields.

Order and naming

Put the document the reader needs first, first. A cover letter before the invoice, the contract before the appendix. It sounds obvious and it is the thing most often got backwards when two files are dragged in without looking.

Rename the download before attaching it. The default name means nothing in a mailbox six months later, and the recipient files what you send them under whatever you called it.

When to send a link instead

Past about twenty megabytes, or past three or four documents, a link is kinder than an attachment. It also lets you replace the file later without sending a correction, which attachments never allow.

The link sharing guide covers the free places to host a file and what each one exposes about you and the people who open it.

Before you press send

Open the merged PDF and page through the joins. A missing final page or a duplicated cover is invisible while you are working and obvious to the person who receives it. Two minutes of paging through the file beats a correction the next morning, and it is the only check that catches a page that merged in the wrong order.

If the documents hold anything private, the privacy scan lists what the file says about the software and the people who touched it. The combining guide covers merging in more detail.

Questions people ask

Will merging the two files change how they look?
No. The pages are copied as they are, so text stays selectable, images keep their pixels and every page keeps its size. What changes is the number of files the recipient has to open, which was the point.
How do I attach two PDFs as one file?
Merge them into a single PDF first, then attach the result. The merge runs in a browser tab, takes a few seconds, and reopens the output to compare it against both sources before you download.
What is the largest attachment I can email?
Gmail allows 25 MB per message and other providers sit near that, though corporate servers are often set lower. Encoding inflates an attachment by roughly a third in transit, so leave room under the limit.
What if the combined PDF is still too large?
Compress it to a size target. The tool races several methods to the number you set and reads every candidate back, so the text stays selectable rather than becoming a picture.
Is zipping the two files a good alternative?
No. A PDF is already compressed inside, so a zip saves almost nothing, and some corporate mail systems block zip attachments outright.

Do it now

The tool runs in this browser. Your file never leaves the machine, and the result is checked before you download it.

Merge 2 pdfs

Where to go next