Target a practical limit
Enter a KB or MB target and the tool works toward staying at or below that size while preserving as much visual quality as possible.
Free tool • Private processing
Compress an image to a target KB or MB.
Choose the maximum file size you need for an upload. The tool adjusts image quality — and only reduces dimensions when necessary — to get as close as possible without exceeding your target. Processing happens in your browser.
Compression settings
Choose an image to begin.
Local by design. Your image stays in this browser while it is processed.
Your image preview will appear here.
Made for upload limits.
Use this when a website, form, marketplace, app store, email service, or social platform rejects an image because the file is too large. Enter the maximum KB or MB allowed and let the tool work toward that limit.
How close will it get?
Browser image encoders do not always produce every possible file size. This tool searches for the closest result it can make without going over your target. For very small targets, it may also reduce image dimensions to get under the limit.
Privacy
The image is decoded, compressed, and previewed locally in your browser. This version does not upload the image to a Rare Frequency Works server for compression.
Hit an upload limit
Compress toward the size you actually need.
Useful when a form says your image must be under a specific size such as 100 KB, 500 KB, 1 MB, or 2 MB.
Quality first
The tool tries quality reduction before shrinking dimensions when possible, helping keep the image visually useful.
Best for uploads
Helpful for forms, marketplaces, email attachments, app-store graphics, websites, and other services with file-size caps.
Why the result may be slightly below your target
Browser image encoders do not always produce an exact byte-for-byte file size. The tool aims to create a result close to your target without exceeding it, which is usually what upload limits require.