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Image tool

Resize images online — exact pixels or ready-made presets

Match the exact dimensions Instagram, YouTube, Etsy or your printer asks for — no more auto-cropped photos or distorted uploads. Batch-resize hundreds of files in one pass.

Perfect for
Instagram posts & stories YouTube thumbnails & channel art Etsy / marketplace listings Open Graph link previews Printing at 300 DPI (A4)
How to resize your images
1
Pick a modeFit-within keeps proportions; exact forces dimensions; percentage scales both.
2
Use a presetSelect the platform — it fills in the exact size so nothing gets cropped.
3
Add your filesDrag in as many images as you like; they are all resized together.
4
Resize & downloadYour correctly-sized images are ready in seconds.

Resize mode

Keeps the original aspect ratio. The image is only scaled down if it exceeds one of the values.

Click to choose images, or drag them here

JPG, PNG, WebP — batch supported

Pixels, aspect ratio and why resizing goes wrong

The #1 rule: never force a squareIf your photo isn't already square, choosing "Exact 1080×1080" will squash it. For square posts, pick Fit-within first, or crop the original — your subject will thank you.

An image's aspect ratio is simply its width divided by its height. A 4000 × 3000 photo has a 4:3 ratio. If you force that photo into a 1080 × 1080 square without cropping, everything gets squashed — people look short and wide. That is the single most common resizing mistake.

There are three legitimate ways to change dimensions:

  • Fit within a box — scale the image down until both sides fit inside your limits. The aspect ratio is preserved and nothing is distorted. This is what you want for websites and email.
  • Exact size — force specific dimensions. Only safe when the target ratio matches the source, or when you accept the stretch.
  • Percentage — multiply both dimensions by the same factor. Ratio preserved, useful for quick previews or thumbnails.

Resolution vs file size

Pixel dimensions and file size are related but different. A 4000 × 3000 photo of a clear blue sky compresses to a tiny file; the same dimensions of a dense forest can be ten times larger, because there is far more detail for the encoder to describe. If your goal is a smaller file rather than smaller dimensions, use the image compressor instead.

Print sizing

Print wants roughly 300 pixels per inch (PPI). An A4 sheet at 300 DPI is therefore 2480 × 3508 pixels. Screens are far more forgiving: a 1920 px wide image already fills most laptop displays.

Frequently asked questions

Is the image resizer free to use?
Yes — free, with no account and no watermark. The platform presets and batch processing are included; there is no paid tier and no export limit.
Do my photos get uploaded when resizing?
No. The image is decoded and redrawn locally in your browser. Nothing is transferred to a server, so confidential design work and personal photos stay on your machine.
Why does my photo look stretched after resizing?
You used an exact size that does not match the photo aspect ratio. Switch to the fit-within mode, which scales the image down proportionally, or crop the original to the target ratio before resizing.
What pixel sizes do social platforms actually want?
As a working baseline: Instagram feed 1080 by 1080 or 1080 by 1350, Instagram story and Reel 1080 by 1920, YouTube thumbnail 1280 by 720, and link preview images 1200 by 630. All of these are built into the presets above.
Does resizing also reduce the file size?
Usually yes, because fewer pixels means less data to encode. If your dimensions are already correct and a smaller file is the only goal, use the image compressor instead — it optimises the encoding without touching the dimensions.
What resolution do I need for printing?
Print wants roughly 300 pixels per inch. An A4 page at 300 DPI is 2480 by 3508 pixels, so check that your original is at least that large before sending it to a printer.