ToolRun

Compress Image to 20KB

Reduce any photo to 20 KB or less while keeping the best possible quality. Runs in your browser.

Target size:

or drop it here, or paste with Ctrl+V

JPEG, PNG, WebP, and other formats your browser can open

Private by design: your files are processed on this device and never uploaded. Want proof? Once the page has loaded, turn off your Wi-Fi and the tool keeps working.

How to compress an image to 20KB

  1. Drop your photo into the box above, or click to choose it. 20 KB is already selected.
  2. The tool tries quality levels automatically and keeps the highest-quality JPEG that is 20 KB or smaller.
  3. Check the preview, then click Download.

If the image cannot reach 20 KB at full size, the tool also reduces its pixel dimensions step by step and tells you when it has done so. You can pick a different target, or type a custom size, at any time.

When you need an image under 20KB

A 20 KB limit is common for signature uploads and small profile photos on online application forms, including many government job, exam, and university portals. A photo can usually reach 20 KB at a size like 200 × 230 pixels while staying recognizable.

How the size is measured

Websites disagree on whether a kilobyte is 1,000 or 1,024 bytes. To be safe, this tool treats 20 KB as 20,000 bytes, the stricter of the two, so the file passes upload checks that use either definition. The result is saved as JPEG because JPEG gives the smallest files for photos and is accepted almost everywhere.

All processing happens in your browser. Your photo is never uploaded, which matters for ID photos and signatures.

Frequently asked questions

Will my photo lose quality when compressed to 20KB?
Some, because reaching a smaller size means discarding detail. The tool keeps as much quality as possible by choosing the highest JPEG quality that still fits 20 KB, and only shrinks the dimensions if quality alone is not enough.
Why is the result a JPG even if I uploaded a PNG?
JPEG produces far smaller files than PNG for photos, and most upload forms with size limits accept JPEG. Transparent areas in a PNG are filled with white, because JPEG has no transparency.
Is my image uploaded anywhere?
No. The compression runs in your web browser using your device. The image never leaves your computer or phone.

Related tools

Compress Image to 50KB

Reduce any photo to 50 KB or less while keeping the best possible quality. Runs in your browser.

Image Resizer

Resize images to exact pixel dimensions with aspect ratio lock and common presets. All processing happens locally in your browser.

Image Cropper

Crop images with free-form selection or preset aspect ratios like 1:1, 4:3, and 16:9. All processing happens in your browser.

Passport Photo Maker

Create passport, visa, and USCIS photos to exact specifications. Supports US, UK, EU, Canada, India, China, and Australia formats with printable sheets.