Free Thumbnail & Reel Cover Previewer

Check your social media image crops

Drop in a thumbnail, still frame, or post image. Check the crop across the main social placements, drag to reframe it, then export what you need.

Drop image here or tap to choose one from your phone
Approximate platform clutter guides only. Not an official simulator.

Preview image crops before you post

Crop Check is a fast local browser tool for creators who want to see how one image holds up across Instagram Reels, YouTube thumbnails, TikTok, LinkedIn, X, Facebook, and Pinterest. Drop in a thumbnail, post image, or still frame, check the crop and UI clutter pressure, then export the sizes you need. No signup, no upload queue, and no fake official simulator claims.

Local image processingYour image stays in the browser while you preview, pan, zoom, rotate, and export.
Real crop pressureCheck how one image survives portrait, square, and wide social layouts before you publish.
Fast exportExport single crops or all supported image sizes when the framing looks right.

Common questions

Does this upload my image?

No. The tool runs in your browser and processes images locally on your device.

Are the overlays official?

No. They are practical guides for common UI clutter zones. They help with framing, but they are not official platform simulators.

Who is this for?

Creators, editors, social managers, and thumbnail designers who want a fast way to sanity-check crops before posting.

Support this tool

If this tool saves you time, you can support ongoing updates or sponsor placement here.

Contact

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