Resize Image in KB (Custom File Size)

Sometimes different websites want different file sizes and it gets confusing. One form says 30KB, another says 100KB, and then some want under 150KB but not too small. Instead of searching separate tools for each size, this page lets you set your own target KB and resize the image exactly the way you want. Just upload → enter size → adjust → download. Pretty simple.

Online Photo Resizer
Fast • Secure • JPG/PNG • Crop & Rotate • Preset Sizes • Bulk Resizer
Preview:
Drag & drop images
or
Upload JPG/PNG Files to resize
Preview:
Queue: 0
Pixels
mm
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inch
DPI
Brightness
100%
Contrast
100%
Queue
Ready: 0
Processed: 0
Processing…

With this tool, you can compress and resize your photo to any specific size in KB. No need to guess or keep uploading the wrong image until it finally gets accepted.

Just type how many KB you want (like 20KB, 40KB, 90KB, 150KB) and the tool will match it as close as possible. Works with:

And no watermark… obviously.

Why Resize in KB?

Many websites don’t allow large uploads because it slows things down or causes storage issues. Specially:

Instead of resizing 5–6 times, here you do it just once.

PDF Compression

You can use our document scanner and pdf compression tools present on Online CamScanner

Examples

Depending on the image, it may need a tiny quality reduction, but the preview helps you adjust before downloading.

Use Cases

  • Resize image for form submission
  • Create small version for WhatsApp, email or upload
  • Make signature scan small without blurring
  • Compress passport size photo to exact limit
  • Make image lightweight for website or blog
  • If you're not sure what size you're supposed to upload, many forms mention it near the upload button.

    FAQs

    Can I set any value like 25.5KB?

    We try to get as close as possible. Some images match exact value, some stay +/- few bytes.

    Is conversion offline?

    Yes, the compression happens in your browser. Nothing is stored on server.

    Does PNG stay PNG?

    Optional. You can keep original or convert to JPG if you want a smaller file.

    Is it free forever?

    Yep, no subscription or watermark. and unlimited downloads

    Pro Tips

    For official documents, make sure text and face are still readable.

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