Metadata.size

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The read-only size property of the Metadata interface specifies the size, in bytes, of the referenced file or other file system object on disk.

Syntax

var size = Metadata.size;

Value

A number indicating the size of the file in bytes.

Example

This example checks the size of a log file and removes it if it's larger than a megabyte.

workingDirectory.getFile("log/important.log", {}, function(fileEntry) {
  fileEntry.getMetadata(function(metadata) {
    if (metadata.size > 1048576) {
      fileEntry.remove(function() {
        /* log file removed; do something clever here */
      });
    }
  });
}, handleError); 

Specifications

Specification Status Comment
File and Directory Entries API
The definition of 'size' in that specification.
Draft Initial specification.

This API has no official W3C or WHATWG specification.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support13 ? No No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No Yes ? No No No ?

See also

Document Tags and Contributors

Contributors to this page: fscholz, Sheppy
Last updated by: fscholz,