TinySandyFree Online Tools

Image Resizer

Change the pixel size of one picture or a whole batch. Type a width and height, pick a social-media preset or scale by percent; the tool keeps the proportions unless you ask for an exact size, shows the original and new dimensions before you start, and saves the result as PNG, JPEG or WebP.

Image Editing Runs in your browser

Resize Your Images in Your Browser

Everything happens in your browser: your pictures are not uploaded. JPG, PNG, WebP, GIF and BMP files that your browser can open are accepted.

Drag and drop your image (JPG, PNG, WebP, GIF or BMP) here, or click to browseAccepted: JPG, JPEG, PNG, WEBP, GIF, BMP. Up to 40 MB each.
Resize by
Choosing a preset fills in the width and height below.
px
Leave empty to calculate it from the height.
px
Leave empty to calculate it from the width.
Used for JPEG and WebP. Higher means a larger file.
Fills transparent areas when the result is saved as JPEG or BMP.

How to Use the Image Resizer

  1. Add one or more pictures with the upload area.
  2. Choose Pixels or Percent. For pixels, enter a width, a height or both, or pick a preset.
  3. If you entered both sizes, decide whether to fit inside the box, stretch to the exact size or fill and crop.
  4. Pick the output format and quality, check the Size check, then press Resize and download the files or the ZIP.

About This Tool

Bloggers and shop owners who need web-sized photos, designers preparing social posts, and anyone who has to meet an upload limit such as 1200 px wide.

Input: JPG / PNG / WebP / GIF / BMP  ·  Output: PNG / JPG / WebP.

Features and Limitations

Features

  • Pixel, percent and preset sizes, with the new size shown before you resize.
  • Keeps the aspect ratio automatically when only one side is entered.
  • Fit, stretch or fill-and-crop for fixed-size slots such as thumbnails and covers.
  • Batch resizing with a single ZIP download.
  • Output as PNG, JPEG or WebP; transparent areas can be filled when saving as JPEG.

Limitations

  • Enlarging a picture cannot add detail; it only stretches the pixels you already have, so big enlargements look soft.
  • Images above 100 megapixels, or results wider or taller than 16,384 px, are refused to protect your browser.
  • Animated GIFs are resized as a single still frame.
  • Metadata such as EXIF camera data and GPS is not copied to the resized file.
  • Processing happens on your device, so very large files depend on your browser's available memory.

Example

A 4000 × 3000 px photo resized to a width of 1200 px with the aspect ratio kept becomes 1200 × 900 px. At 25% the same photo becomes 1000 × 750 px.

Frequently Asked Questions

How do I resize an image without stretching it?

Enter only a width or only a height, or keep Keep the aspect ratio selected when you enter both. The other side is calculated so that the proportions stay the same.

What is the difference between fit, exact and fill?

Fit keeps the whole picture inside your box. Exact forces the size and can distort the picture. Fill scales the picture until it covers the box and trims the overflow from the centre.

Will resizing reduce the file size?

Usually yes: fewer pixels means a smaller file. For the best saving also choose JPEG or WebP and a quality around 80%. The Image Compressor tool shows before and after sizes.

Are my pictures uploaded to a server?

No. The resizing uses your browser's canvas and the files never leave your device.

Does the resized image keep its EXIF orientation?

Yes, the picture is drawn the right way up, as your browser displays it, and the result no longer needs an orientation tag.

Related Tools

More like this: all Image Editing tools, all Image & Design tools or the TinySandy home page.