--- description: REST and GraphQL API documentation for file access and management in Directus. readTime: 10 min read pageClass: page-reference --- # Accessing Files > Every file managed by the platform is uploaded to the configured storage adapter, and its associated metadata is > tracked within the `directus_files` system collection. Any requested file transformations are handled on the fly, and > are only saved to storage. ## File Security Data and permissions around files are associated to the `directus_files` collection. It is recommended that you only provide public permissions to specific files or file folders (for example, a 'Public' folder), rather than making the whole collection public. Read more on [custom access permissions](/user-guide/user-management/permissions.html#configure-custom-permissions). ::: warning Exporting Data Creates Files [Exporting data](/user-guide/content-module/import-export.html#export-items) creates new files and adds them to your file storage. If these files are accessible publicly, you may leak data held in the exported collections. ::: ## Accessing a File The location of your actual file originals is based on the project's configuration, but you can consistently access them via the API using the following URL. ``` example.com/assets/ example.com/assets/1ac73658-8b62-4dea-b6da-529fbc9d01a4 ``` ::: tip SEO You can provide an optional filename after the UUID to optimize for SEO, for example: ``` example.com/assets// example.com/assets/1ac73658-8b62-4dea-b6da-529fbc9d01a4/directus-logo.png ``` This optional filename is also used in the Content-Disposition header when the `?download` query parameter is used. ::: ::: warning Direct File Access While you may _technically_ be able to expose your storage adapters root file system and access your raw files through there, it is recommended that you always use the Directus API. This is the only way that you can take advantage of file permissions and other built-in features. ::: ![Original File](https://cdn.directus.io/docs/v9/reference/files/original-20220216A.jpg) _Original File Used — 602KB and 1800x1200_ ## Downloading a File To download an asset with the correct filename, you need to add the `?download` query parameter to the request and the `download` attribute to your anchor tag. This will ensure the appropriate [Content-Disposition](https://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html) headers are added. Without this, the download will work on the _same_ domain, however it will have the file's "id" as the filename for cross-origin requests. ### Example ```html Download ``` ## Requesting a Thumbnail Fetching thumbnails is as easy as adding a `key` query parameter to the original file's URL. In the Admin App, you can configure different asset presets that control the output of any given image. If a requested thumbnail doesn't yet exist, it is dynamically generated and immediately returned. ### Preset Transformations - **`key`** — This **key** of the [Storage Asset Preset](/user-guide/settings/project-settings#files-storage), a shortcut for the below parameters ### Custom Transformations Alternatively, if you have "Storage Asset Transform" set to all, you can use the following parameters for more fine grained control: - **`fit`** — The **fit** of the thumbnail while always preserving the aspect ratio, can be any of the following options: - `cover` — Covers both width/height by cropping/clipping to fit - `contain` — Contain within both width/height using "letterboxing" as needed - `inside` — Resize to be as large as possible, ensuring dimensions are less than or equal to the requested width and height - `outside` — Resize to be as small as possible, ensuring dimensions are greater than or equal to the requested width and height - **`width`** — The **width** of the thumbnail in pixels - **`height`** — The **height** of the thumbnail in pixels - **`quality`** — The optional **quality** of the thumbnail (`1` to `100`) - **`withoutEnlargement`** — Disable image up-scaling - **`format`** — What file format to return the thumbnail in. One of `auto`, `jpg`, `png`, `webp`, `tiff` - `auto` — Will try to format it in `webp` or `avif` if the browser supports it, otherwise it will fallback to `jpg`. ### Advanced Transformations For even more advanced control over the file generation, Directus exposes [the full `sharp` API](https://sharp.pixelplumbing.com/api-operation) through the `transforms` query parameter. This parameter accepts a two-dimensional array with the format `[Operation, ...arguments]`. ### Quality vs File Size The quality parameter can be any integer from `0-100`. Qualities closer to `0` have lower file sizes, but also poor image quality due to compression artifacts. Values closer to `100` have larger file sizes, but better image quality. Below are four possible qualities (200x200 cover) to visually compare the balance between compression and file size. | 25% | 50% | 75% | 100% | | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------- | | ![25%](https://cdn.directus.io/docs/v9/reference/files/200-200-cover-25-20220216A.jpg)
_4KB_ | ![50%](https://cdn.directus.io/docs/v9/reference/files/200-200-cover-50-20220216A.jpg)
_6KB_ | ![75%](https://cdn.directus.io/docs/v9/reference/files/200-200-cover-75-20220216A.jpg)
_8KB_ | ![100%](https://cdn.directus.io/docs/v9/reference/files/200-200-cover-100-20220216A.jpg)
_38KB_ | ### Preset ``` example.com/assets/?key= ``` ### Custom ``` example.com/assets/?fit=&width=&height=&quality= example.com/assets/1ac73658-8b62-4dea-b6da-529fbc9d01a4?fit=cover&width=200&height=200&quality=80 ``` ### Advanced ``` ?transforms=[ ["blur", 45], ["tint", "rgb(255, 0, 0)"], ["expand", { "right": 200, "bottom": 150 }] ] ``` ## The File Object `id` **uuid**\ Primary key of the file `storage` **string**\ Storage adapter used for the file. `filename_disk` **string**\ Name of the file as saved on the storage adapter. `filename_download` **string**\ Preferred filename when file is downloaded. `title` **string**\ Title for the file. `type` **string**\ Mimetype of the file. `folder` **many-to-one**\ What (virtual) folder the file is in. Many-to-one to [folders](/reference/system/folders). `uploaded_by` **many-to-one**\ Who uploaded the file. Many-to-one to [users](/reference/system/users). `uploaded_on` **datetime**\ When the file was uploaded. `modified_by` **many-to-one**\ Who updated the file last. Many-to-one to [users](/reference/system/users). `filesize` **number**\ Size of the file in bytes. `width` **number**\ If the file is a(n) image/video, it's the width in px. `height` **number**\ If the file is a(n) image/video, it's the height in px. `duration` **number**\ If the file contains audio/video, it's the duration in milliseconds. `description` **string**\ Description of the file. `location` **string**\ Location of the file. `tags` **array**\ Tags for the file. `metadata` **object**\ Any additional metadata Directus was able to scrape from the file. For images, this includes EXIF, IPTC, and ICC information. ```json { "id": "4f4b14fa-a43a-46d0-b7ad-90af5919bebb", "storage": "local", "filename_disk": "4f4b14fa-a43a-46d0-b7ad-90af5919bebb.jpeg", "filename_download": "paulo-silva-vSRgXtQuns8-unsplash.jpg", "title": "Paulo Silva (via Unsplash)", "type": "image/jpeg", "folder": null, "uploaded_by": "0bc7b36a-9ba9-4ce0-83f0-0a526f354e07", "uploaded_on": "2021-02-04T11:37:41-05:00", "modified_by": null, "modified_on": "2021-02-04T11:37:42-05:00", "filesize": 3442252, "width": 3456, "height": 5184, "duration": null, "description": null, "location": null, "tags": ["photo", "pretty"], "metadata": { "icc": { "version": "2.1", "intent": "Perceptual", "cmm": "lcms", "deviceClass": "Monitor", "colorSpace": "RGB", "connectionSpace": "XYZ", "platform": "Apple", "creator": "lcms", "description": "c2", "copyright": "" } } } ``` ## List Files List all files that exist in Directus. ### Request #### Query Parameters Supports all [global query parameters](/reference/query). ### Response An array of up to [limit](/reference/query#limit) [file objects](#the-file-object). If no items are available, data will be an empty array. ### Example ## Retrieve a File Retrieve a single file by primary key. ### Request #### Query Parameters Supports all [global query parameters](/reference/query). ### Response Returns a [file object](#the-file-object) if a valid primary key was provided. ### Example ## Upload a File Upload a new file. ### Request The file contents has to be provided in a property called `file`. All other properties of [the file object](#the-file-object) can be provided as well, except `filename_disk` and `filename_download`. ::: tip Order Matters Make sure to define the non-file properties for each file _first_. This ensures that the file metadata is associated with the correct file. ::: #### Query Parameters Supports all [global query parameters](/reference/query). ### Response Returns the [file object](#the-file-object) for the uploaded file, or an array of [file objects](#the-file-object) if multiple files were uploaded at once. ### Example ## Import a File Import a file from the web ### Request #### Query Parameters Supports all [global query parameters](/reference/query). #### Request Body `url` **Required**\ The URL to download the file from. `data`\ Any of [the file object](#the-file-object)'s properties. ### Response Returns the [file object](#the-file-object) for the imported file. ### Example ## Update a File Update an existing file, and/or replace it's file contents. ### Request #### Query Parameters Supports all [global query parameters](/reference/query). #### Request Body You can either submit a JSON object consisting of a partial [file object](#the-file-object) to update the file meta, or send a multipart/form-data request to replace the file contents on disk. See [Upload a File](#upload-a-file) for more information on the structure of this `multipart/form-data` request. ### Response Returns the [file object](#the-file-object) for the updated file. ### Example ## Update Multiple Files Update multiple files at the same time. ### Request #### Query Parameters Supports all [global query parameters](/reference/query). #### Request Body `keys` **Required**\ Array of primary keys of the files you'd like to update. `data` **Required**\ Any of [the file object](#the-file-object)'s properties. ### Response Returns the [file objects](#the-file-object) for the updated files. ### Example ## Delete a File Delete an existing file. ::: danger Destructive This will also delete the file from disk. ::: ### Request #### Query Parameters Supports all [global query parameters](/reference/query). ### Response Empty response. ### Example ## Delete Multiple Files Delete multiple files at once. ::: danger Destructive This will also delete the files from disk. ::: ### Request #### Query Parameters Supports all [global query parameters](/reference/query). #### Request Body Array of file primary keys ### Returns Empty response. ### Example