Resize Image to 300×300 helps you resize profile photos and form images to 300×300 pixels. Processing runs in your browser — your files are processed in your browser whenever possible.
When to use Resize Image to 300×300
Many uploads enforce strict file size limits. Resize Image to 300×300 automates optimization so you can get close to your requirements without desktop software or manual quality sliders.
Whether you are preparing a passport photo, a scanned document, or a profile image, this tool gives you a fast, private way to prepare a compliant file.
How it works
Upload your image using drag and drop or the file picker. CompressKB reads the file into memory on your device and processes it using HTML Canvas — no server upload required.
The image is redrawn at your chosen dimensions. Aspect ratio is preserved by default so your image fits inside the target size without distortion.
Your files are processed in your browser whenever possible. Your files stay on your device while you compress or convert them.
Tips for best results
Start with a reasonably sized source image. Cropping unnecessary areas before compression or resizing usually produces better visual quality at smaller file sizes.
Keep your uncompressed original as a master copy. You can always re-run the tool with different settings if needed.