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OG image size: 1200×630

An OG image is the preview picture apps like WhatsApp, Slack, X and Facebook pull in the moment someone shares your link — set it wrong and the link card shows a stretched or cropped mess instead of your content. The standard size is 1200×630 pixels, a roughly 1.91:1 rectangle, which this resizer fits your photo to exactly.

  • No upload — files stay on your device
  • Works offline once loaded
  • Free forever, no signup, no watermark

Target for this placement: {{ width }}×{{ height }} px ({{ label }})

Drop a photo here, or tap to choose JPG, PNG or WebP — nothing is uploaded
Fit mode
Output format
Padding
Quality
Rendering {{ width }}×{{ height }}…
Live preview
  • Original {{ sourceSizeLabel }}
  • Output size {{ resultSizeLabel }}
  • Output pixels {{ width }}×{{ height }}

Under the {{ maxKbLabel }} limit for this placement.

Quality was lowered automatically to fit the size limit.

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How to use this tool

  1. Drop your photo

    Add any JPG, PNG or WebP photo — drag it onto the box or tap it to choose one from your device.

  2. Pick a fit mode

    Choose Cover to crop and fill the frame, or Contain to keep the whole photo and pad the edges with a colour or a blurred copy of the image.

  3. Download the exact size

    Check the live preview and file size, then download — the image is already the exact pixel size this placement needs.

Questions people ask

What is an OG image?

It is the preview picture pulled from a webpage's <meta property="og:image"> tag whenever the link is shared — the thumbnail that shows up in WhatsApp, Slack, iMessage, X and Facebook link previews.

What size should an OG image be?

1200×630 pixels is the widely used standard, giving roughly a 1.91:1 ratio that most platforms display without cropping. Keeping the file under 5MB and using JPG or PNG avoids most platforms simply refusing to fetch it.

Why does my link preview look cropped or blank?

Either the og:image tag is missing or pointing at a broken URL, or the source image is a very different aspect ratio and got cropped hard by the platform. Set the image tag on your page and use an image already sized to 1200×630 like the one this tool produces.

Is my photo uploaded anywhere?

No. Resizing happens entirely inside your browser using the Canvas API — this site has no upload endpoint, and the tool keeps working if you disconnect from the internet after the page loads.

What is the difference between Cover and Contain?

Cover scales your photo up until it completely fills the target frame and crops away whatever does not fit, so the result is nothing but photo, no padding. Contain scales the photo down until the whole thing is visible, then pads the leftover space with a colour or a blurred, zoomed-in copy of the same photo so it still looks intentional.

Do social media image sizes change over time?

Yes — platforms adjust these specs every year or two without much notice. The dimensions on this page were last verified in August 2026; if a placement changes after that, the pixel size and any file-size limit shown above may be out of date, so it is worth a quick check against the platform's current help page before a high-stakes upload.

Related tools

Free because it costs us nothing to run: your browser does the work, not our servers. Made by Dynamb Technologies — we build software for businesses.