Trust and privacy

What happens to the file

  • Files stay on your device for core image work. Picmu does not upload them.
  • The original file stays untouched while you preview changes and export a new copy.
  • Unsupported formats are flagged early instead of failing after a long wait.
  • The page uses layout presets instead of treating one generic size as a fit for every social destination.

Quick flow

How to use this page with confidence

  1. Choose the social preset that matches the real destination.
  2. Decide whether the image should cover the frame or stay fully visible inside it.
  3. Process locally, compare the box result, and export the final social asset.

Benefits

Why this page is useful

Preset-driven social resizing with local preview, fixed boxes, and clear crop/background handling.

Preset-first without losing control

Start with a useful social size, then refine the box, fit mode, and background on the same page.

Good for transparent and opaque sources

If the asset needs padding or a visible canvas, the background controls stay right next to the preset logic.

Useful as a landing page and a workstation

The page explains social constraints and still processes the actual image locally.

Page setup

How the page starts and what it checks

Social layouts usually need either cover framing or visible padding. This page keeps that decision explicit instead of stretching the source or hiding the crop.

Page defaults

What is already tuned for you

Preset boxes are built in

The page starts from practical social sizes so users can work from intent instead of typing every dimension from scratch.

Fit mode stays visible

Contain, cover, and background choices are part of the workstation, not hidden layout side effects.

Capability notes

Where the browser helps and where it limits

Social specs are still context-dependent

Presets are strong starting points, but campaigns and downstream tools can still ask for variations.

No distortion shortcuts

The page avoids stretch-first behavior because it makes landing pages and export results less trustworthy.

Tradeoffs

What to consider before export

Cover mode can crop

When the destination shape differs from the source, filling the box usually means trimming some of the picture.

Contain mode may need padding

Avoiding crop often means embracing visible margins or a background color.

Every platform still evolves

Presets are practical starting points, but final requirements can still vary by campaign or downstream tool.

Best practices

Keep the output reliable

  • Use cover for image-led posts and contain for assets that must stay fully visible.
  • Flatten transparency intentionally when the social destination prefers JPG output.
  • Keep the naming pattern specific when exporting several social variants from the same source.

FAQ

Questions before you export

No. Preset resizing and export run locally in the browser.

Open in Picmu

Open social image resizer

Social layouts usually need either cover framing or visible padding. This page keeps that decision explicit instead of stretching the source or hiding the crop.

Open social image resizer