How to Write a Cover Letter From a Job Description

Editorial review: 22 October 2026. Examples are illustrative unless stated otherwise.

A job description can help you decide what to address in a cover letter. Your own experience supplies the evidence. Neither a template nor a generated draft should invent the connection between them.

First check whether a letter is required, optional or prohibited, and follow any word limit or specific questions. When optional, consider whether it adds useful context beyond the resume. There is no single length or structure that suits every application.

Read requirements in context

Separate essential qualifications, preferences, alternatives and responsibilities. Repeated terms may signal emphasis, but repetition alone does not establish a mandatory qualification. “Python or R” is not the same as requiring both; “experience not required” should not become a gap to hide.

Choose a small number of relevant requirements you can actually address. Do not infer that a company is struggling, understaffed or failing simply because it is hiring. If you mention its work, check what you say against information you have actually read.

The keyword finder can suggest recognized terms and wording groups for review. Its scan runs in your browser without signup, but it can miss terms or misread context. Continuing into tailoring is a separate workflow that sends the posting for analysis when requested.

Connect each point with supported experience

For each requirement, note a task, project or qualification from your background. Identify your own contribution, not just the team's outcome. If the evidence is adjacent rather than an exact match, say so rather than promoting it into experience you do not have.

You do not need a number in every example. Include a measured result only when you can support both the result and your part in it. If a required license or eligibility condition is missing, a persuasive paragraph cannot replace it.

Use a simple structure

Opening: identify the role and the relevant background you bring. A direct application statement is acceptable; you do not need an invented hook or exaggerated enthusiasm.

Middle: explain one or two supported examples and their relevance. Add context the resume does not already make clear. Avoid repeating the entire work history.

Close: thank the reader and, where appropriate, welcome a conversation. Check that names, role details and contact information belong to this application.

Use a professional voice you can stand behind. Avoid guessing a reader's preferences from an industry stereotype or imitating a company's slang at the expense of clarity.

A fictional worked example

Suppose a customer-support posting asks for account setup support, clear documentation and familiarity with enterprise accounts.

The fictional applicant's confirmed source facts are:

• Answered account setup questions in a helpdesk system.
• Updated the team's setup guide when recurring questions exposed missing steps.
• Worked with small-business customers, without enterprise-account experience or a measured retention result.

A paragraph consistent with that source could be:

In my support role, I answered account setup questions and updated our setup guide when recurring questions exposed missing steps. That work is relevant to the support and documentation responsibilities in your posting. My experience has been with small-business customers rather than enterprise accounts.

This example does not claim account ownership, leadership, reduced churn or enterprise experience. Those would be new facts, not better phrasing. Adapt the method to your own evidence; do not copy this fictional work history as yours.

Check the draft before sending

Compare every material claim with your source. Check employer names, current versus past work, credentials, quantities and the scope of your contribution. Remove generic flattery and statements about the company you have not verified.

If using AI assistance, review the output rather than assuming fluent text is accurate. Follow the application's rules about assistance. Read the final file or pasted text, including the date, recipient and sign-off, and retain what you submitted.

Drafting with Apply Leaf

The cover-letter entry lets you start from a resume source and posting; an account is required to upload and structure a resume. Automated drafting can make unsupported claims, so compare the source and letter yourself and edit before copying or downloading. Check pricing for current generation options and limits. Resume examples are available in the labelled demo.