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Image Compressor to 20 KB
Browser-Local • Verified Size Ceiling

Custom File Size Reducer

Image Size Reducer in KB

Interactive file size reducer for JPG, PNG, and WebP images. Set a target from 5 KB to 5000 KB and inspect the before-and-after comparison.

A smaller file starts here.No sign-up
Maximum size

Drop your image here
browse files

JPG, PNG or WebP → at most 20.0 KB

Max 15 MBMax 24 MPPaste from clipboard
01 · Choose your settings
KB

20,000 bytes maximum · 1 KB = 1,000 bytes

Auto keeps JPEG inputs as JPEG and uses WebP for other inputs when supported. JPEG fallback uses a white background.

Zero server uploads: Processed in local browser memory
Decimal bounds: 20 KB = 20,000 bytes verified
  • Free to use. No account needed.
  • Your images stay on your device.
  • Check the preview and exact file size.
JPG · PNG · WebPUp to 15 MB · 24 MP
A little help getting the right result
Select Other Target Sizes & Converters
10 KB
10,000 bytes
20 KB
20,000 bytes
30 KB
30,000 bytes
50 KB
50,000 bytes
100 KB
100,000 bytes
200 KB
200,000 bytes
500 KB
500,000 bytes
PNG Tool
Convert & reduce
JPEG Tool
Photo Limiter

How to Prepare Your Image in 3 Steps

1

Select or Drop Image

Choose a supported static JPG, PNG or WebP file up to 15 MB and 24 megapixels. Animated images and PDF files are not supported.

2

In-Browser Compression

Your browser tries quality and dimension settings within its processing limits. Time depends on the file and your device; a matching result is not guaranteed.

3

Download Verified File

Download after checking the result against your destination’s file type, size and dimension requirements.

A GOOD FIT, NOT JUST A SMALL FILE

Make every kilobyte count.

How compression works

Choose the right output format

Use JPG when your form asks for a photograph in JPEG format. JPEG replaces transparent areas with white. Use WebP when the destination accepts it and you need a smaller file or transparency.

PNG is supported as an input. Downloads are JPEG or WebP; this tool does not export PNG or PDF.

Small enough, and still readable

Compression can soften details and reduce pixel dimensions. Check faces, letters and signature strokes in the comparison before downloading. File size in KB and image dimensions in pixels are different requirements.

For a strict 20 KB maximum, this site checks against 20,000 bytes. See why that differs from 20 KiB.

Supported inputs are static JPG, PNG or WebP files up to 15 MB and 24 megapixels. Before compression, the working image is limited to 12 megapixels; larger sources are reduced proportionally even if a generous byte limit is selected. The search may reduce dimensions further. Some images cannot reach the selected maximum within the time, attempt and minimum-dimension limits. The tool does not pad a smaller result to an exact size or enforce a minimum file size.

Still getting an upload error?
  • Check the destination’s required file type. A small WebP file will not work in a JPG-only field.
  • Check both minimum and maximum file size. A result under 20 KB may also be below a required 10 KB minimum; this tool enforces a maximum only.
  • Check the required pixel dimensions, crop, background and photograph date. This compressor does not set an exact width, height or DPI.
  • If the result is blurry, crop away unnecessary background in an image editor first, then try again. Choose a larger target only if the destination allows it.

Frequently Asked Questions

Can I set a custom target in kilobytes?

Yes, choose from presets (10KB, 20KB, 50KB, 100KB, 200KB, 500KB) or enter a custom maximum in KB. One KB means 1,000 bytes here.