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Extension overview

Extension support

Instagram extension support

The exact behavior being tested for Instagram Posts on desktop Chrome and Firefox, plus what to check when the image control is unavailable.

Current status

Compatibility testing, not a store availability claim

Chrome and Firefox builds are being checked against Instagram’s current desktop Post composer. Store release remains gated on verified file replacement without resetting the ratio, carousel order, or Crop state.

Surface
Instagram desktop Posts
Browsers
Chrome and Firefox in testing
Processing
Local in your browser

Supported test scope

What the first release is designed to handle

Post images

One image or a carousel selected together in Instagram’s initial file picker.

JPEG and static PNG

Supported images keep the corresponding JPEG or PNG file type. Changed JPEG pixels are locally re-encoded at the browser encoder’s maximum requested quality.

Mixed carousels

Supported images use the selected mode. Video files pass through unchanged and keep their position.

Fail-open files

If any selected image is unsupported, animated, or unreadable, the whole selection returns to the original files instead of mixing transformed and original results.

Troubleshooting

If the image control does not appear

  1. 1

    Confirm the Post Crop screen

    The control is intentionally hidden outside Instagram’s desktop Create Post Crop step. It does not appear in Stories, Reels, Profile, Edit, or Filter screens.

  2. 2

    Start the carousel together

    For the current test scope, select every carousel file in the initial picker. Adding more files afterward returns to Instagram’s native behavior.

  3. 3

    Check the browser and extension state

    Use the latest Chrome or Firefox build and confirm the extension is enabled. If Instagram’s interface no longer matches safely, the control stays hidden.

  4. 4

    Continue with Instagram when needed

    If a file cannot be processed or the Crop state cannot be kept stable, the extension is designed to restore the original selection and leave Instagram’s native upload available.

Privacy and stored preferences

Images are handled locally

The extension reads selected files only to render the requested Post frame in your browser. Resize Image For does not receive or remotely store image pixels.

Read the full Privacy Policy
  • Only the enabled setting and Fit background preference are stored by the extension.
  • The extension sends no product analytics or image events.
  • Instagram receives the resulting files only when you continue the ordinary upload flow you initiated.
  • Videos are never re-encoded by the extension.

Resize Image For is an independent product and is not affiliated with, endorsed by, or sponsored by Instagram or Meta.