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  1. Email Header Analyzer, RFC822 Parser - MxToolbox

    ABOUT EMAIL HEADERS This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet …

  2. Header - Wikipedia

    Header (computing), supplemental data at the beginning of a data block E-mail header HTTP header Header file, a text file used in computer programming (especially in C and C++) A pin …

  3. HEADER Definition & Meaning - Merriam-Webster

    The meaning of HEADER is one that removes heads; especially : a grain-harvesting machine that cuts off the grain heads and elevates them to a wagon. How to use header in a sentence.

  4. HTML header Tag - W3Schools

    Definition and Usage The <header> element represents a container for introductory content or a set of navigational links. A <header> element typically contains: one or more heading …

  5. <header>: The Header element - HTML | MDN - MDN Web Docs

    The <header> HTML element represents introductory content, typically a group of introductory or navigational aids. It may contain some heading elements but also a logo, a search form, an …

  6. Header | U.S. Web Design System (USWDS)

    Use the basic header if you have few enough sections in your main navigation to fit comfortably next to your logo; this decision will depend on the length of your text and whether you include …

  7. What Is a Header? - Computer Hope

    Nov 2, 2025 · The multifaceted definition of a header in technology, covering its roles in data transmission, document design, web page structure, file information, and more.

  8. Messageheader - Google Search

    Paste email header or drag and drop text file here

  9. APA Headings and Seriation - Purdue OWL® - Purdue University

    Headings APA Style uses a unique headings system to separate and classify paper sections. Headings are used to help guide the reader through a document. The levels are organized by …

  10. What is a header? Definition, purpose, and FAQs | B12

    A header is the top section of a website that usually appears on every page. It often includes your business logo, navigation menu, contact info, or call-to-action buttons.