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Prepare an Image for a Social Post — Cross-Platform Workflow

3–5 minutes · For creators

Each social platform has its own preferred aspect ratio and dimensions, and posting the same source image to all of them without resizing means at least one feed will crop your subject out of the frame. Doing it manually in Photoshop is slow; doing it in an online tool that uploads your photo defeats the privacy point.

This workflow takes one source image and produces three platform-correct exports — square for Instagram feed, 16:9 for Twitter, 1.91:1 for LinkedIn — with optional watermark, all in the browser.

The 4-step workflow

  1. Image Cropper

    Crop to the platform aspect ratio (1:1 Instagram feed, 16:9 Twitter, 1.91:1 LinkedIn).

  2. Image Resizer

    Resize to the platform's recommended pixel dimensions (1080×1080, 1600×900, 1200×627).

    Why: Platform-side resizing is destructive — pre-sizing keeps text and edges sharp.

  3. Image Watermark

    Optional: stamp your handle or logo in a corner.

  4. Image Compressor

    Compress to <300 KB so mobile feeds load fast.

Every step runs in your browser — no upload, no signup.

When to use this workflow

  • Cross-posting a product photo to Instagram, Twitter and LinkedIn at once
  • Shipping a content-marketing graphic with consistent branding across channels
  • Quote-card workflow where the same quote needs to look right on every platform
  • Personal brand posts where the watermark must always sit in the same corner

Frequently asked questions

Should I export different files per platform?

Yes. Each platform re-encodes uploaded images, but it does so from whatever you give it — a 1:1 image uploaded to Twitter will be letterboxed, a 16:9 image uploaded to Instagram will be center-cropped. Pre-cropping per platform is the only way to guarantee framing.

What's the right export quality?

Platforms re-compress everything, so exporting above 80% quality is wasted bytes. Compress to ~75% WebP or 80% JPG to get a small, sharp file that survives the platform's second compression pass.

Why watermark before compressing?

If you compress first, the watermark sits on top of already-degraded pixels and looks crisper than the underlying image — visually jarring. Watermarking before compression keeps everything visually consistent.

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