CV File Format: Should You Send a PDF or Word Document?

You've spent hours perfecting your CV — tailoring the experience, tightening the bullet points, getting the layout just right. Then comes a surprisingly tricky question: what format do you actually send it in? PDF or Word? Does it really matter? The honest answer is yes, it absolutely does. Sending your CV in the wrong format can mean it gets rejected by an automated system before a human ever reads it, or it arrives on a recruiter's screen looking nothing like you intended. Here's everything you need to know to get it right every time.

The Two Main CV File Formats: PDF vs Word

The vast majority of job applications involve one of two formats: PDF (.pdf) or Microsoft Word (.docx). Each has genuine advantages depending on the situation, which is why there's no single universal answer.

PDF preserves your formatting perfectly. Fonts, spacing, columns, and design elements look identical on every device and operating system. If you've worked hard on a clean, professional layout, PDF ensures it arrives exactly as intended. It also signals a degree of professionalism and finality — this is your finished document.

Word documents, on the other hand, are editable. Recruiters sometimes need to remove your contact details before sending your CV to a client, or add their agency branding. A .docx file makes that easy. Word files are also more universally compatible with older software systems.

The key is knowing which to use and when — and that comes down to who is reading your CV and how.

When to Send a PDF CV

PDF is generally the safer default when you're applying directly to an employer, particularly through a company's own careers portal or via email. Here's why: your formatting stays intact regardless of what version of Word (or even Pages or Google Docs) the recipient is using. A document that looks immaculate on your laptop can arrive with scrambled bullet points, collapsed columns, or odd font substitutions on someone else's machine — unless it's a PDF.

PDF is also ideal if your CV has a more designed layout — think subtle colour accents, a sidebar with skills, or a two-column structure. These elements are notoriously prone to breaking in Word when opened on a different system.

If you're emailing your CV speculatively or responding to a job advert that doesn't specify a format, default to PDF. It's the professional standard in most UK industries, from finance to marketing to engineering. Just make sure your PDF is not a scanned image — it must be a text-based PDF so the content is readable by both humans and software.

When to Send a Word Document CV

There are specific scenarios where a Word document is the better or required choice. The most important: when a recruitment agency asks for it. Agencies routinely reformat CVs or strip out personal details before presenting candidates to clients, and a locked PDF makes that needlessly difficult. If a recruiter requests a Word version, always oblige — refusing or sending a PDF anyway can actually damage your relationship with them.

Some older or more basic Applicant Tracking Systems (ATS) also parse Word documents more reliably than PDFs. While modern ATS platforms handle PDFs well, if you're applying to a large organisation using legacy HR software, a .docx file may be the smarter choice.

Always save as .docx rather than the older .doc format — .docx is universally supported and produces a smaller file size. Avoid sending .pages files (Apple's word processor format), as many Windows users cannot open them without converting first.

ATS Systems and Why File Format Affects Your Application

Many medium and large UK employers use Applicant Tracking Systems to automatically screen CVs before they reach a human recruiter. These systems parse your CV — extracting your work history, skills, education, and contact details — and score your application against the job requirements.

File format can directly affect how well an ATS reads your CV. A poorly structured PDF, or one exported from a design tool like Canva or Adobe InDesign, can confuse ATS software, resulting in garbled text or missing sections. If the system can't read your CV properly, your application may be automatically ranked lower or discarded entirely.

This is one reason tools like StackedCV.com are worth using — an AI-optimised CV is built with clean, ATS-friendly formatting from the ground up, so you're not unknowingly sabotaging your application with a beautiful-but-unreadable design. When in doubt, keep your layout simple and ensure your PDF is exported from Word or Google Docs rather than a graphic design tool.

File Naming, Size, and Other Practical Details

The format is important, but so are the basics around how you send the file. A surprisingly common mistake is naming your CV something like 'CV_final_v3_UPDATED.pdf' — this looks disorganised and can cause filing issues on the recruiter's end.

Name your CV clearly and professionally. A simple format works best: FirstName-LastName-CV.pdf (for example, Sarah-Jones-CV.pdf). If you're applying for a specific role, you might add the job title: Sarah-Jones-Marketing-Manager-CV.pdf. Avoid spaces in file names, as these can cause issues when files are transferred between systems.

Keep your file size under 5MB — ideally under 2MB. A text-based CV should never be this large anyway, but if you've embedded high-resolution images or a photo, compress the file before sending. Most email systems and application portals have upload limits, and a bloated file can cause errors.

If submitting via an online portal, read the instructions carefully — some specify accepted formats, and ignoring this is an easy way to have your application rejected on a technicality.

What to Do If No Format Is Specified

When a job advert doesn't mention a preferred file format, use your judgement based on context. Applying directly to a company via email or their careers page? Send a PDF. Dealing with a recruitment agency? Ask them, or default to Word if you don't hear back. Uploading via an online application system? Check whether the portal lists accepted formats — if it accepts both, PDF is usually the safer bet.

It's also worth having both versions ready at all times. Keep an up-to-date PDF and a clean Word version saved and accessible. That way, you can respond to any request quickly without scrambling to reformat. Tools like StackedCV.com make it easy to generate a professionally structured CV that can be exported in either format, saving you the hassle of maintaining two separate documents manually. Speed matters when you're job hunting — the faster you can respond to an opportunity, the better.

Choosing the right CV file format is a small decision with real consequences. Get it wrong and you risk your application looking unprofessional, failing an ATS scan, or simply frustrating the recruiter who has to deal with it. As a rule of thumb: PDF for direct applications, Word for agencies, and always follow any instructions given. Name your file clearly, keep it lightweight, and have both formats ready to go. If you want a CV that's already optimised for both human readers and ATS systems — in whichever format you need — head over to StackedCV.com and let the AI do the hard work for you.