Compress image to 300KB
Apply a 300KB budget to each photo in a submission. Check the individual results, then add their actual sizes if there is also a total limit.
Drag images in, paste, or click to choose
A whole folder works too · Ctrl/Cmd+V pastes · on phone this opens your file picker · up to 40 MB per file
How the 300KB target operates
The starting per-image target is 307,200 bytes. Larger sources go through JPEG quality search and optional downscaling. Ten results exactly at this ceiling would total 3,072,000 bytes before packaging, exceeding a decimal 3MB limit. This page does not enforce a combined batch budget.
Constraints of batching to 300KB
- Every completed result needs its own size check; a batch can include an over-target result as well as processing errors.
- Source EXIF remains in unchanged files. Re-encoding does not copy it, but compression should not be used as a universal metadata-removal check.
300KB limit FAQs
How does 300KB help plan a multi-photo submission?
It gives each image the same initial budget. Add the achieved byte counts yourself and compare them with the total allowance; ten 300KB targets do not guarantee a decimal 3MB total.
What happens to the photo dimensions?
The original dimensions are tried first. If quality is insufficient and resolution reduction is enabled, the tool tries smaller dimensions. Check the output rather than assuming a fixed shape.
Can I include a file already under 300KB?
Yes, if the browser can decode it. It returns unchanged, including metadata, format and transparency.
Will transparent images stay transparent in this batch?
Only those returned unchanged. Files that need re-encoding become JPEG on a white background, so inspect the results before using them in a layout.
