Make your images fit the upload rules.
Set a maximum file size in KB for one image or a small batch, add pixel dimensions if required, and see the actual results before downloading. JPG, PNG, and WebP process in your browser by default. HEIC uses the server.
Preview and results
Compare actual bytes and pixels before submitting elsewhere.
Original
Choose an image
Result
Ready after processing
1. Read the upload rules
Check the file type, maximum KB, and width and height stated by the destination site. A size under the cap alone may not be enough.
2. Match dimensions
Use “within bounds” to keep the whole image, “white canvas” for exact dimensions without cropping, or “center crop” for a full frame.
3. Check the result
Each output shows its real bytes and pixels. If both limits cannot be met without crossing the quality floor, the tool says so clearly.
Other image tasks
Your existing tools remain available for batch compression, basic resizing, and HEIC conversion.