Image resizer
Set the size, keep the picture. Resize JPG, PNG, WebP, HEIC, AVIF, GIF, BMP, SVG, ICO or TIFF images by pixels, percentage, longest side or a platform preset.
How to resize an image
- Add up to 20 images — JPG, PNG, WebP, HEIC, AVIF, GIF, BMP, SVG, ICO or TIFF. They stay in your browser.
- Choose how to resize: Pixels for an exact width or height, Percent to scale a batch down, Longest side for "no larger than" rules, or a platform Preset.
- Click Resize, check the new dimensions next to each file, then Download one by one or as a ZIP — or send the results to the compressor, converter or Image to PDF.
Images are never enlarged unless you tick Allow enlargement, because upscaling can only invent pixels and looks soft. When both sides are fixed, choose Fit, Fill, Pad or Stretch to decide what happens to a different shape.
Useful details
Are my images uploaded?
No. Resizing runs in your browser with its built-in image engine; the files are never sent to Toolkitta. Keep the tab open until you download or send your results — reloading clears the batch. Website hosting and performance measurement are described in our Privacy notice.
How do I resize without distorting the picture?
In Pixels mode, fill in only the width or only the height and leave the other side on Auto: each image keeps its own proportions. Percent and Longest side always keep proportions. Presets fix both sides, so use Fit or Pad rather than Stretch if you do not want any distortion.
What is the difference between Fit, Fill, Pad and Stretch?
They only matter when both width and height are set. Fit keeps the whole picture inside the size, so one side can come out shorter. Fill makes exactly that size and crops the overflow from the edges, centred. Pad makes exactly that size and fills the leftover margins with a background colour (or leaves them transparent in PNG and WebP). Stretch forces the exact size and changes the proportions.
Why did my image come out smaller than I asked?
Enlargement is off by default. If the size you asked for is larger than the image, it is kept at its original pixels (or, for Fill and Stretch, the requested shape is shrunk until it fits), and the file details say so. Tick Allow enlargement when a destination insists on a minimum size and a slightly soft result is acceptable.
Which formats can I resize?
In: JPG, PNG, WebP, HEIC/HEIF (iPhone photos), AVIF, GIF, BMP, SVG, ICO and TIFF, up to 20 files, 20 MB each and 100 MB per batch, at most 40 megapixels. Out: the original format where the browser can write it (JPG, PNG, WebP), otherwise PNG for pictures with transparency and JPG for the rest — or pick JPG, PNG or WebP explicitly under Output format.
Does resizing reduce the file size?
Usually a lot: a photo with a quarter of the pixels is roughly a quarter of the size. If you need an exact kilobyte limit, send the resized image to the compressor and use Target size; if you need a different format, send it to the converter.
Is metadata (EXIF, location) kept?
No. Every resized file is rebuilt from pixels, so camera settings, GPS location and other embedded metadata are removed. Orientation is applied to the pixels first, so photos are not rotated. Keep your original if you need the metadata.
What about DPI for printing?
DPI is only a label for print; screens show pixels. For a print, multiply the size in inches by 300 to get pixels — a 4 × 6 inch print wants about 1,200 × 1,800 pixels — and resize to that. The resizer does not change the DPI tag itself.
Can I crop, rotate or make a round avatar here?
Not in this tool. Use Send to → Cropper to frame, rotate, flip or crop a circle from a resized image; the cropper also has its own resize panel for one-off edits.
Guides
- How to resize an image without losing qualityWhy downscaling is safe and upscaling is not, which resize modes keep proportions, how to set exact dimensions, and how to keep sharpness after resizing.