Skip to main content

Exact-pixel Image Resizer

Resize Image to 1200×628 (Link Preview)

1200×628 is the classic 1.91:1 Open Graph size Facebook documented for shared links. Use it when Slack, LinkedIn, or a blog share card crops a square photo badly.

Image Resizer

100% client-side · No uploads · Powered by HTML5 Canvas

Need the main tool? Image Resizer

Written by Safaat Rahman Siham, Founder & Developer at Convertify4u. Contact us.

Link-preview geometry, not a feed post

What Open Graph actually shows

When someone pastes your URL in Facebook, LinkedIn, iMessage, or Slack, crawlers look for og:image. Many CMSs still recommend 1200×628 (ratio ~1.91:1). A 1080×1080 square will be cropped into a wide bar and may lose the product. Design the subject in the center third so UI overlays do not cover it.

Facebook vs LinkedIn vs Twitter/X

Facebook link ads and organic shares historically used 1200×628. LinkedIn article and company-update cards are also wide. X/Twitter headers are a different job (1500×500 on this site). Do not reuse a Twitter header as an og:image — it is too short and will letterbox.

Text on the card

Keep headlines out of the bottom 20% — some clients overlay the domain. High-contrast type, few words. This resizer does not add text; compose in your design tool, then lock 1200×628 here so the CMS does not resample to a random width.

File weight after pixels are right

Crawlers sometimes refuse huge PNGs. Export JPG at 1200×628, then compress once if the og:image is over ~1MB. Recrawling Facebook’s debugger is a separate step after you upload the file to your site.

How it works

  1. 1

    Start from a landscape master

    A portrait phone photo will lose most of the frame. Crop to ~1.91:1 before you force 1200×628 if faces matter.

  2. 2

    Export 1200×628

    Fields are pre-filled. Download JPG for photos, PNG only if you need hard-edged graphics.

  3. 3

    Set og:image in the CMS

    Pixels alone do not update old Facebook caches. After upload, use Facebook Sharing Debugger or LinkedIn Post Inspector.

Common use cases for 1200×628

Blog and product URL cards

One 1200×628 hero per landing page so Slack unfurls a readable still instead of a random crop.

Paid link ads that still ask for 1.91:1

Some ad managers still list 1200×628 as the feed link image. Confirm the live spec; if they want 1080×1080, use that preset instead.

Trust & technology

1.91:1 card

Wide preview, not a square feed tile.

On-device

Brand drafts never upload to convertify4u.com.

No watermark

Clean file for CMS media libraries.

Frequently asked questions

Image Resizer