We asked pro resume coaches to name 1 thing they wish everyone knew

Spell-check is your friend, according to Paden Simmons, senior vice president of Nigel Frank International, a leading Microsoft recruitment firm.

"Spelling and grammar errors are, largely speaking, avoidable, and simply point towards a careless attitude that always leaves doubts about your desire to land the job," Simmons said.

"Similarly, any dates that don't match, or contradict other parts of your résumé, will either raise alarm bells that they're untrue or that you've rushed your application, which isn't a great trait to be revealing at this stage of the hiring process. That's not to say you can't overcome them, but they create such an unnecessary stumbling block at a time when you most want to be making a good impression."

A big mistake that many job seekers make is being too vague, according to Martin Yate, of Knock Em Dead, a résumé and career coaching service.

"It should be based on what the customer wants to buy, reflecting what you bring to the table with each requirement," Yate said. "Not doing this is why résumés sink to the bottom of résumé databases, never to be seen again."

Sometimes less is more, founder of New York branding and consulting firm Point Road Group Alyssa Gelbard told Business Insider.

"Résumés are reviewed very quickly, so while you want to make things clear and easy to read with certain formatting enhancements, you also don't want to include too much styling, which becomes visually distracting," Gelbard said. "An overly formatted résumé — one with liberal use of boxes, borders, shading, font styles, colors, et cetera — is challenging to read because it's busy and the reader's eye doesn't know where to go. As a result, key details and messaging can get lost, which impacts the impression you make on a potential employer or key contact."

Sometimes candidates can get so wrapped up in the details that they neglect the most basic information, according to Anthony Fletcher, founder of Chicago-based executive search firm My Future Consulting.

"For example, listing significant accomplishments and dates of employment," Fletcher said. "And simply ensuring everything is spelled correctly — I've even seen résumés where candidates have misspelled their own names!"

"A lot of résumés are cluttered, full of paragraphs, the formatting is inconsistent," said Stephanie Dennis, career coach and host of the podcast "Career Talk."

"When a résumé is cluttered and messy, it's hard to consume the information on it quickly. We are looking at each résumé for seconds, so for the best chance to move forward, the résumé needs to … easily and quickly determine if there is a potential fit."

Sure, sending a résumé into one of those online portals can feel extremely impersonal. But Tom Gerencer, career and workplace expert at Zety, said applicants should remember that a very human HR professional is on the other end of that portal.

And those humans aren't so keen on your buzzwords.

"Often over the sixth cup of coffee, (recruiters) go through hundreds of applications coming from 'go-getters' and 'best of breed achievers.' Job seekers should keep in mind that the popular résumé buzzwords got worn out and don't impress the recruiters anymore," Gerencer said. "They look for words that convey specific information. They're not interested in what type of 'ninja' you are, they look at what you've achieved and if it's measurable."

"So providing specific information without bragging and imitating hundreds of other applications will definitely score a candidate extra points, while being refreshing and pleasant to read."

"When I first started out, I thought that all résumés had to look standard in order to be taken seriously. Over time, I've learned that it's okay, and in some industries, expected for you to get creative," Kayla Kelly, executive marketer at workforce management firm Paypro, told Business Insider.

"Employers are receiving so many résumés for each posting that standing out, in a good way, can certainly help you get a callback. Think about different formats, adding shapes or colors."

She does, however, align with Gelbard on one point:

"You just want to be sure that it still looks professional and clean."

Make yourself invaluable. But do it smoothly.

"Your résumé shouldn't be a bragging post for your accomplishments, it should be the long-awaited solution to the hiring manager's vacancy," Olivia Jaras, founder of Salary Coaching for Women, told Business Insider.

While of course you shouldn't divulge a love for an activity like weekend binge drinking, including a section for hobbies on a résumé can make you more attractive as a candidate, according to Sean Sessel, founder and director of the The Oculus Institute.

"When your résumé actually does get to a human being, this section will allow them to relate to you and imagine themselves working with you, which is what really matters at the end of the day," Sessel said.

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