View JSON file in Browser

If you don't want to install extensions, you can simply prepend the URL with view-source:, e.g. view-source:http://content.dimestore.com/prod/survey_data/4535/4535.json. This usually works in Firefox and Chrome (will still offer to download the file however if Content-Disposition: attachment header is present).

Firefox 44 includes a built-in JSON viewer (no add-ons required). The feature is turned off by default, so turn on devtools.jsonview.enabled: How can you disable the new JSON Viewer/Reader in Firefox Developer Edition?

In Chrome, use JSONView to view formatted JSON.

To view "local" *.json files: - after install You must open the Extensions option from Window menu. - Check box next to "Allow Access to File URLs" - note that save is automatic (i.e. no explicit save necessary)

Re-open the *.json file and it should be formatted.

In Chrome use JSONView or Firefox use JSONView