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Image requirement guide

Resize a LinkedIn image

Keep text and the primary subject inside the central safe area so the post still reads in compact previews.

Give text-safe artwork a square canvas

The 1200 × 1200 starter canvas is useful for a square LinkedIn post where the primary message needs room around it. Fit with padding is safer for designs with edge text; crop is useful when the source already has a strong central composition.

Validate the file you will actually attach

The source filename and source bytes are not the output. Aftermath reports the final dimensions, format, and measured bytes, so you can catch a wrong export before attaching it to a post or scheduling workflow.

Questions people ask

Does this tool publish to LinkedIn?

No. It prepares a local, correctly named image and leaves publishing in your control.

Can I keep a transparent background?

Yes. Choose PNG or WebP and a transparent background when the destination supports it.

How to use this tool

The LinkedIn-oriented preset creates a 1200 × 1200 JPEG and defaults to fit, keeping the complete source visible while unused canvas space becomes padding. It is intended for a square post image with readable central content, not a profile photo, company logo, banner, or ad format. Aftermath checks the rendered pixels; no current official LinkedIn source is attached, so verify the destination's latest requirements before publishing.

What to choose and what you get

What to choose

  • one supported local image

Result

  • a separate processed image copy or local measurement report

Supported use

  • A rectangular or square JPG, PNG, or WebP source proportionally fitted inside a 1200 × 1200 JPEG canvas.
  • Background and alignment adjustments that preserve all source content while preparing a square post-style asset.

Before you start

  • This starter is not a verified LinkedIn profile, logo, cover, article, event, or advertising specification.
  • It does not predict feed rendering, text legibility in every client, compression by LinkedIn, or upload acceptance.

Supported formats

  • Accepted formats: JPG, PNG, WebP, HEIC, AVIF, GIF, BMP.
  • Output formats: JPG, PNG, WebP.

Browser support and permissions

  • Modern browser with JavaScript, a supported image decoder, and enough memory for the selected image.
  • No camera, microphone, or screen permission is needed.

Choose the right settings

  • Use this page for a square post-style starter when preserving the entire source with fit is preferred.
  • Use /image-to-512x512 for a smaller transparent square or /instagram-image-resizer for a filled 4:5 portrait crop.
  • Use /resize-image-pixels if current LinkedIn guidance names another exact asset dimension.

Worked example

A complete diagram should fit inside a square 1200 × 1200 LinkedIn starter without losing labels at the edges.

Starting facts

  • The source is rectangular and contains edge text.
  • Preserving the whole diagram matters more than filling the square.

Observed operation: Choose contain fit and an intentional background so the entire diagram remains visible on the square canvas.

Review the result: Confirm all labels remain readable and verify the downloaded JPEG reports 1200 × 1200 pixels.

Boundary: The starter canvas does not certify platform policy, feed rendering, accessibility or engagement performance.

What you can do

Fit a complete source into the site's 1200 × 1200 JPEG starter canvas for a square LinkedIn post image.

If it does not work

  • A very wide or tall source can leave substantial padding and make its central content appear too small.
  • Changing from fit to crop can remove edge content; stretch can alter the source proportions.
  • An outdated starter canvas remains possible because the route has no linked current LinkedIn specification source.

Things to know

  • External requirements can change; compare the result with the current official source before submitting it.

Privacy boundary

The selected image stays in the current browser session and is not sent to an Aftermath processing service. How local processing is verified.

What this tool verifies

Checks the displayed limits and reports or creates a separate processed image copy or local measurement report from one supported local image.

Check before sharing

A local measurement or export does not guarantee acceptance by an external destination.

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