PicmuPrivate image, video, and audio tools.
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Browser-only image resizing

Resize images without stretching them.

Use this page when the job is about output dimensions: social crops, CMS uploads, email attachments, templates, or presentation assets. The resizer keeps aspect ratio on by default, exposes exact dimensions and percentage-based scaling, and lets you export without the usual guesswork.

ModesWidth / height / percentage
DefaultAspect ratio preserved
ProcessingLocal only
No uploadPreview only
What the route confirms right now

This environment is useful for local preview and file inspection, but it does not confirm a workable export path for this page.

OutputWEBP
Export pathPreview only
InputAny supported image

You can add any format the current browser can decode.

OutputWEBP

You can change the export format without leaving the page.

TransparencyVisible

Transparency depends on the selected file and export format.

BatchQueue + ZIP

Single files and batches go through the same local workstation.

Drop images to open the resize image routeThe workstation accepts files anywhere on the page and adds them straight into the current workflow.
or paste from clipboard

Batch

0 files

Drop images here to begin a local workflow.

Workspace preview

No image selected yet

Import an image to inspect the preview, metadata, and export result.

Trust and privacy

What happens to the file

  • Files stay on your device. Images are not sent through a server upload queue.
  • The original file is left untouched while you preview and export the result.
  • Unsupported codecs are clearly disabled instead of failing silently.
  • The resize route opens with dimension controls first so the page matches the user intent immediately.

Quick flow

How to run the route 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 route 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.

Keep going in Picmu

Reduce image sizeCombine resizing with a smaller final file.Crop imageTrim the frame before you commit to final dimensions.Upscale imageIncrease output pixels when you need enlargement.

Guides worth reading next

How to resize an image without stretching itKeep proportions safe and results usable.How to reduce image file size without ruining qualityUse dimensions and compression together.How to prepare an image for printKnow when pixels are enough for print output.

FAQ

Questions before 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