Compress Image to 20KB
Easily shrink your passport photos and ID scans to exactly 20KB so they are ready for your exam portals.
Upload Your Photos
Drag and drop here, or choose from your device
Choose PhotosYour Original Photo
Size: 0 MB
Format: ...
Size Settings
We'll keep your image at or under this size, with the best quality possible.
Ready Photo
How to Compress an Image to 20 KB
20 KB is a very common limit: it's often the top size for signatures and the lowest size for photos on application forms. It also works for tiny profile icons. Upload your picture and get a copy under 20 KB in seconds.
Upload Your Image
Click the upload box and choose a JPG, PNG or WEBP image. You can pick several images at once.
Check the Target Size
The target is already set to 20 KB. Change it, or add a Max Width, if you need to.
Compress & Download
Click the compress button and download your image. Several images download together as one ZIP file.
Target
20 KB
Formats
JPG · PNG · WEBP
Format kept
JPG stays JPG
Batch
Many photos · ZIP
Price
100% free
Watermark
None
What 20 KB Means for Your Photo
20 KB is a very common limit: it's often the top size for signatures and the lowest size for photos on application forms. It also works for tiny profile icons.
Typical photo width
400–550 px
Smaller than a 3 MB phone photo
About 99%
Upload time on slow data (1 Mbps)
Under 1 second
Numbers are a guide for a typical phone photo. Simple pictures stay bigger; very detailed photos come out a little smaller.
When Do You Need a 20 KB Image?
20 KB is best for signatures, thumb impressions and small passport photos.
Email Signatures
Logos and small photos inside email signatures should be tiny so emails open fast.
Small Graphics
Simple icons, badges and QR-style graphics fit easily in 20 KB.
Signature Uploads
Many forms ask for a scanned signature under 20 KB. A clean signature on white paper fits easily.
Thumb Impressions
Upload a left-thumb impression or similar small scan within a 20 KB limit.
What to Expect at 20 KB
How Will It Look?
At 20 KB there is very little room, so the tool also makes the picture smaller (fewer pixels). Signatures and simple photos stay clear; detailed photos look softer.
Always Under 20 KB
The tool never goes over 20 KB. It picks the best quality that fits, keeps your format (JPG stays JPG), and tells you clearly if a picture can't get that small.
Tips for the Best Result at 20 KB
- Make the background white. Plain white areas take almost no space, so your signature stays sharper.
- Too blurry? Crop tighter, or use a slightly bigger size if the form allows.
- Upload a JPG, not a PNG. A PNG photo can't get this small — convert it with PNG to JPG.
- Crop first. Cut away empty space around the signature or face with Crop Image — less area means a clearer result.
Choose the Right Image Size
Need a different limit? Pick a size — each page opens with that target already set.
Frequently Asked Questions
Quick answers about compressing an image to 20 KB.
Upload your photo, check that the target says 20 KB and click the compress button. Your smaller image is ready to download in a few seconds.
Yes, whenever possible. The tool never goes over 20 KB — it finds the best look that fits. If a picture can't get that small, you'll see a clear message and get the smallest version we could make.
At 20 KB there is very little room, so the tool also makes the picture smaller (fewer pixels). Signatures and simple photos stay clear; detailed photos look softer.
Yes. Photograph or scan your signature on white paper, crop away the empty space and upload it here. Signatures compress very well and stay sharp at 20 KB.
First set the exact pixels with Image Resizer, then compress the result here. Leave Max Width empty so the size stays the same.
It depends on the photo, but as a guide a typical phone photo comes out about 400–550 px wide at 20 KB, with good quality. Simple pictures like signatures can stay wider; busy, detailed photos come out a little smaller.
20 KB gives about 33% more room than 15 KB, so photos come out a little wider (about 400–550 px instead of 350–450 px) and sharper. Always pick the biggest size your form or website allows — it gives the best quality.
Yes. PNG stays PNG and keeps its sharp edges. For photos saved as PNG, converting to JPG first gives a much smaller file.
Yes. JPG stays JPG, PNG stays PNG and WEBP stays WEBP, so the website you upload to accepts the same format you started with.
Yes. Select several images together. Each one is compressed to your target size, and you can download them all in one ZIP file.
Yes. Type a number in Max Width to make the picture narrower. For exact width and height, use our Image Resizer first.
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Ready to Compress Your Image to 20 KB?
Upload your photo and download a smaller copy in seconds. JPG stays JPG. 100% free, no sign-up.
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