# multipart form data

CEFR C2 · Compound

Source: https://englishreference.com/word/multipart-form-data
Updated: 2026-07-22

## Definition

a way of sending information over the internet that allows you to send text and files, like photos or documents, at the same time.

For teachers: An encoding method for HTTP requests that allows for the transmission of multiple distinct data types, such as text fields and binary files, within a single message body.

## Examples

- The website uses multipart form data to let users upload their profile pictures.
- When you submit a job application online with both a text form and a PDF resume, the browser typically sends the request as multipart form data.
- Developers must ensure the server-side script is configured to parse multipart form data correctly, as standard form encoding cannot handle the binary streams required for high-resolution image uploads.

## Usage notes

- Commonly used in the context of web development and API documentation; often preceded by 'enctype' in HTML forms.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.