When a 100KB limit matters
Forms, portals, marketplaces, profile systems, and document uploads sometimes reject images above 100KB. Setting the exact maximum first saves trial and error.
100KB IMAGE COMPRESSOR
Compress an image to 100KB.
Need an upload under 100KB? Open the compressor with a 100KB target already selected, then save the smallest useful version of your image.
QUICK ANSWER
Use the preset, then save your result.
This page takes you directly to the matching Rare Frequency Works tool. Files are processed in your browser for supported operations, and you can adjust the settings before saving.
What the compressor changes
The tool first reduces image encoding quality. If the target is especially small, it can also reduce pixel dimensions so the final file stays within the chosen limit.
Keep the original image
Compression creates a new downloadable copy. Your original file is not overwritten, so you can compare the result before using it.
Frequently asked questions
Can I compress an image to exactly 100KB?
The tool aims to get as close as practical without exceeding 100KB. Browser encoders may produce a result slightly below the target.
Does this upload my image to a server?
The compression operation is designed to run in your browser, so the image does not need to be sent to Rare Frequency Works for processing.
Which format is usually smallest?
For photos, JPG or WebP often produces a smaller file than PNG. The best choice depends on the image and whether transparency is needed.