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Compress an image to an exact size

Free · runs in your browser · updated 2026-07-05

To compress an image to 100KB (or any target), choose your photo, set the target size in KB, and click Compress. The tool automatically adjusts quality — and dimensions if needed — until the file fits under your limit, then downloads it.

How to use the compress image to size

  1. Choose your photoLarge phone photos (4–8 MB) compress down dramatically.
  2. Set the target100KB and 200KB are common limits on government, visa, university and job application forms.
  3. Compress and downloadQuality is tuned automatically to land just under your target.

Frequently asked questions

How do I get a photo under 100KB?

Set 100 as the target and click Compress. The tool reduces JPG quality step by step, then shrinks dimensions if quality alone isn't enough — a typical phone photo lands at 100KB while staying perfectly usable on screen.

Why do upload forms have KB limits?

Older government and application systems cap uploads to keep storage and processing manageable — UK visa and passport systems, HMRC attachments and many university portals commonly demand under 100–500KB.

Will my photo still look OK?

At 100–200KB, photos remain clear at screen size. Fine detail softens at very small targets — that's the trade-off the form is forcing, not something any tool can avoid.

Does it work for PNG?

Input yes, output is JPG — PNG can't hit small targets for photographs. If the form insists on PNG, compress here first, then convert with our Image Converter.

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