Online forms
Prepare a photo or scanned document for a maximum-KB upload field.
Image utility
Compress an image to an exact size.
Choose your target in kilobytes. The tool finds the highest JPEG quality it can use while staying under that target.
Files stay on this device
KB
Processing stays in your browser
Best for photographs
JPG compression works especially well for photographs and scanned application documents.
Keep your original
Compression creates a new download. Your original file is never modified.
Check official limits
Application requirements change. Confirm the current size and dimensions on the official portal.
Practical guidance
Use the result with confidence
An exact-KB target is useful when a portal accepts files only below a stated limit. UtilityHub searches for the highest usable JPEG quality under your target; the final size can be lower because encoders cannot guarantee every byte value.
Before you finish
- The output is below the required maximum.
- Text, facial details and edges remain readable.
- The destination accepts the exported JPG format.
Original process diagram
Quality-first compression
1Inspect original
2Reduce dimensions or quality
3Check the downloaded copy
Evidence and accountability
- Written by
- UtilityHub Product Team
- Reviewed by
- File Quality Review
- Last reviewed
- 2026-09-20
- Method guide
- Open related guide
Input: 2.4 MB JPG, 3024 × 4032 px
Process: Target 300 KB while retaining the original aspect ratio
Expected output: A smaller browser-generated JPG
Actual size varies with image detail; inspect text and faces before submitting.
Common uses
Email attachments
Create a smaller sharing copy while preserving the original file.
Website images
Reduce transfer size before publishing a photograph online.
Recommended workflow
- 1Choose the original image.
- 2Enter the maximum size shown by the destination.
- 3Run compression and inspect the preview, dimensions and output size.
- 4Download the result and keep the original separately.
Questions
Will the output be exactly the requested KB value?
It will target the limit and normally finish at or below it. Exact byte-for-byte output is not always possible because image encoders use discrete quality settings.
Does UtilityHub upload the image?
No. Processing happens in the browser on this device.
Why does a small target look blurry?
A very low file-size limit leaves less data for detail. Crop unused background or reduce dimensions before forcing a lower quality.