Many job applications and portals specifically ask for a single attachment rather than separate files, and even where multiple files are technically accepted, submitting one clean, correctly ordered document tends to present more professionally than two separate uploads. Combining a cover letter and resume into one PDF is a quick task once you know the right order and a couple of small details worth checking.
Steps
- Export both documents to PDF individually first — the cover letter and the resume, each from whatever tool you wrote them in.
- Check each one individually for formatting issues before combining, since it is easier to fix a problem in one document than in a merged file.
- Use Merge PDF to combine them, with the cover letter first and the resume second, matching how a reader would expect to encounter them.
- Open the combined file and check the page order and that nothing looks broken at the point where the two documents join.
Why the cover letter goes first
A cover letter is meant to be read before the resume — it introduces you and provides context for what follows. Putting it first in the combined file matches the natural reading order a hiring manager would expect, rather than making them scroll past your resume to find the introduction that was meant to come first.
Naming the file professionally
A combined file named something generic like “document1.pdf” or “scan.pdf” is a small but real missed opportunity to present yourself well from the very first thing a hiring manager sees in their downloads folder. A clear name — your full name, followed by what the document is, such as “Jordan Smith - Cover Letter and Resume.pdf” — is a small detail that costs nothing and looks noticeably more organised, especially when a reviewer has dozens of similarly named applications to sort through.
Keeping page count and file size reasonable
A combined cover letter and resume is typically two to three pages total, and should stay a modest file size given it is mostly text. If the combined file is unexpectedly large, check whether either source document has an oversized embedded image (a logo, a photo) that is inflating the size disproportionately; the PDF Compressor can bring this down without affecting the text if needed.
What to do if the application system wants separate files despite everything
Some application portals have separate upload fields specifically for a cover letter and a resume, and forcing a combined file into a system built around two distinct uploads can occasionally cause more confusion than it solves — the system might expect to extract information from what it assumes is only a resume, for instance. Read the application instructions carefully; if separate fields are provided, follow that structure rather than assuming a combined file is always the better choice.
Keeping both a combined and separate version ready
Since you cannot always predict in advance which format a given application system expects, it is worth keeping both a combined file and the two separate source PDFs ready to go before you start applying, rather than generating whichever version you need at the last moment under time pressure. This small bit of upfront preparation means you can respond to either kind of application system immediately, without needing to stop and merge or re-export a file in the middle of filling out a time-limited online form.
Tailoring the combined document for each application
If you are applying to multiple positions with slightly different tailored cover letters or resume emphasis, keep clear, separate master versions of each tailored variant rather than repeatedly editing and re-merging from one shared file, which risks accidentally sending the wrong version to the wrong application. A clear naming convention for your own working files, separate from the final combined submission name, helps keep track of which combination goes with which specific application.
Double-checking formatting survives the merge
Occasionally, combining two PDFs that were created in different tools or with different page setups can result in very slightly different margins or fonts between the two sections once merged, even though each looked fine individually. This is usually a minor cosmetic issue rather than a functional problem, but it is worth a final look through the combined file specifically for this before submitting, since a hiring manager may notice an inconsistency that you would not catch by only checking each document separately.
Keeping a master version ready for future applications
Once you have a clean, well-combined cover letter and resume for one application, keep that combination as a general-purpose starting template, rather than rebuilding the merge from scratch for the next opportunity. Update the cover letter content and re-merge for each new tailored application, but reuse the same naming convention and combined structure that already worked well, so each new application takes only a few minutes to assemble rather than starting the whole process over.
Frequently asked questions
Should the resume or cover letter come first in the combined file?
The cover letter first, followed by the resume, matches the natural reading order and introduces you before presenting the detailed resume content.
Does combining them into one file look more professional than two separate attachments?
Generally yes, and it matches what many application systems specifically request; check the specific application's instructions if unsure.
What should I name the combined file?
Your full name plus a clear description, such as "Jordan Smith - Cover Letter and Resume.pdf," rather than a generic or default filename.
Will merging affect the formatting of either document?
No, each document's content and formatting are preserved exactly; merging only combines them into one file without altering either individually.
Should I include a cover page before both documents?
This is not typically necessary or expected for a job application; the cover letter itself serves that introductory purpose.
What if the application only accepts one file and I have three documents to include, like a portfolio too?
Merge all required pieces together in a logical order, following the same principle as covered in our guide to combining different file types into one file.
Is the tool free and private?
Yes. No sign-up, no watermark, and files are removed from the server automatically about an hour after processing.