How do I resize an image to 300 × 300 pixels?
Upload your picture and this tool will resize image to 300x300 pixels straight away. A square crop box appears on your image. Drag it to choose what stays in the frame, or switch to Fit with padding to keep the whole picture with a white or coloured border. Download as JPG, PNG or WebP. You can also set a KB limit such as 50KB or 100KB if a form asks for it.
Where is a 300 × 300 image used?
A 300 × 300 px square is a small, light size that loads fast and looks neat in lists and grids. Common uses include:
- Profile pictures and avatars on forums, school portals, HR systems and messaging apps.
- Product thumbnails on small online stores and catalogues.
- Online application forms that ask for a square photo, often with a KB limit.
- Website team pages and author boxes, where all photos should be the same size.
- Logo uploads for directories, listings and event pages.
Crop or pad? Getting a square from a rectangle
Most photos are rectangles, for example 4000 × 3000 px. To make them square, part of the picture has to change. Here are the options:
| Option | Result | Use it when |
|---|---|---|
| Crop to fill (default) | Full 300 × 300 square, edges trimmed | Faces, profile photos, products that fill the frame |
| Fit with padding | Whole image visible, plain border added | Logos, wide products, group photos |
| Stretch | Exact square, may look squashed | Rarely. Only for images that are almost square |
Many 300 × 300 resizers on the web decide this for you, and the result cuts off heads or products. Here you see the crop box and choose.
Steps to make a 300 × 300 px image
- 1Upload the image
Any JPG, PNG, WebP, GIF or BMP. Large camera photos are fine.
- 2Position the square
Drag the crop box over the part you want. Pull a corner to zoom in or out.
- 3Choose format and quality
JPG for photos, PNG for logos. Turn on "Limit file size" if you need a KB cap.
- 4Download
The stats bar confirms 300 × 300 px and the final KB size.
How big is a 300 × 300 image in KB?
File size depends on the content and format, not only on pixels. As a rough guide:
| Format | Typical size at 300 × 300 |
|---|---|
| JPG, high quality | 25KB – 60KB |
| JPG, medium quality | 10KB – 25KB |
| WebP | 8KB – 35KB |
| PNG (photo) | 100KB – 200KB |
If a form says "300 × 300 px, under 20KB", turn on the KB limit and type 20. The tool keeps the pixel size and adjusts compression only.
Is 300 × 300 enough for printing?
For a screen, yes. For print, 300 × 300 px at 300 DPI is only 1 × 1 inch. If you need a larger print, choose a bigger size with Resize Image to 600 × 600 or set custom inches in Resize to Custom Dimensions. You can read about aspect ratio to understand why squares need cropping.
Other useful tools: Resize Image by Pixels for any size, Crop and Resize Image for free cropping, and Convert Image to JPG to change formats.
Frequently Asked Questions
How do I resize an image to 300x300?
Upload the image on PhotoKB Resize Image to 300 × 300, move the square crop box and download. The output is exactly 300 × 300 pixels.
Will my image be cut off?
With Crop to fill, the edges outside the square are trimmed, and you choose what stays. Choose Fit with padding to keep the whole image.
How many KB is a 300x300 image?
A 300 × 300 JPG is usually 15KB–60KB depending on quality and detail.
Can I make a 300x300 image under 20KB?
Yes. Turn on Limit file size and type 20. The pixel size stays 300 × 300.
Is 300x300 good for printing?
At 300 DPI it prints at only 1 × 1 inch. For larger prints, use 600 × 600 or bigger.
Is the tool free and private?
Yes. It is free, unlimited, and works entirely in your browser.
About this tool
Built and maintained by the PhotoKB Editorial Team. We test every tool with real phone photos, scans and PDFs before each update. Exam and portal values are based on public official notifications. PhotoKB is not linked to any exam body, so always confirm current rules on the official website. Last updated: 8 November 2026.