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
Set a file-size range and let the existing Fylqen tool verify whether the generated JPEG falls between both limits.
Start here: This page starts with a 20 KB minimum and 50 KB maximum; you can edit both values after choosing an image.
Compare your original image with the ready file side by side.
No upload or storage occurs.
Set your requirements or paste a requirement text.
Quickly apply common requirements.
Step 1
Select the image you need to submit; inspection happens locally in your browser.
Step 2
Use Range mode and keep or edit the minimum and maximum values for the destination form.
Step 3
Process the image and confirm the actual output is at least 20 KB and no more than 50 KB.
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 uses the actual encoded Blob size for verification. It does not pad files artificially to reach a target.