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 resize route opens with dimension controls first so the page matches the user intent immediately.

Quick flow

How to use this page with confidence

  1. Drop the file into the workspace and confirm the original dimensions.
  2. Enter the new width, height, or percentage while preserving proportions by default.
  3. Process locally, inspect the resized preview, and download the result.

Benefits

Why this page is useful

Set new image dimensions locally by width, height, or percentage while keeping aspect ratio safe by default.

Dimension-first workflow

You can resize by exact pixels or percentage without hunting through unrelated compression or conversion settings first.

Preview with the destination in mind

Check the new dimensions and output preview before export so resized text, UI, or photography stay usable.

Useful for repeat output sizes

The queue and naming pattern support common production jobs like consistent asset sets or social variants.

Tradeoffs

What to consider before export

Resizing up and resizing down are different jobs

Reducing dimensions is straightforward. Enlarging an image increases pixels but does not automatically create new real-world detail.

Non-proportional resizing should be deliberate

Stretching an image can distort faces, products, and interface elements. The workflow keeps aspect ratio on by default to avoid that trap.

Dimensions and format still work together

After resizing, you may still want to change format or compression depending on the destination.

Best practices

Keep the output reliable

  • Set one dimension first and let the other follow automatically when proportions matter.
  • Resize down before compressing hard when you need smaller files.
  • Use the upscale route instead of extreme enlargement if you truly need more pixels.

FAQ

Questions before you export

Not by default. The workflow preserves aspect ratio unless you intentionally choose a different behavior.

Open in Picmu

Open the image resizer

Resizing changes the pixel dimensions of the file. It should preserve proportions unless you intentionally choose a non-proportional mode.

Open the image resizer