How the range works
18 KB is below the range, 32 KB satisfies it, and 61 KB is above it. Under 50 KB is not equivalent to between 20 KB and 50 KB.
Fylqen
Make an image between 20KB and 50KB
Set a file-size range and let the existing Fylqen tool verify whether the generated JPEG falls between both limits.
Image preview and result
Compare your original image with the ready file side by side.
No upload or storage occurs.
Image requirements
Set your requirements or paste a requirement text.
Paste requirements
OR
Set requirements manually
Quick presets (coming soon)
Common requirements for popular use cases.
Measured output only
Fylqen uses the actual encoded Blob size for verification. It does not pad files artificially to reach a target.