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Resize Image to 10KB
10 KB only fits a small picture: a scanned signature, a thumb impression or a passport-size thumbnail. This page lowers quality first, reduces the pixel size only if it has to, and writes a JPG — the type most forms with a 10 KB cap ask for.
- Runs on your device
Drop images here
or browse · one image on Free
Supports JPG, PNG, WebP, GIF, BMP, AVIF
Target size picks the quality for you and never goes over the limit you set.
The result is never larger than this. If a size cannot be reached by quality alone, the image is scaled down to fit.
Free compresses one image at a time.
Free exports up to 4096px on the longest side
What actually fits in 10 KB
A 10 KB JPG has room for a face photo about two hundred pixels across, or a clean signature at around 140 × 60 pixels with plenty to spare. A photo straight off a phone is usually 2–4 MB — a few hundred times the budget — so reaching 10 KB always means making the picture smaller as well as compressing it harder. The tool does both automatically and shows the final width, height and quality next to the result.
Getting under 10 KB
- Crop tightly first if you can: a signature photographed on a whole sheet of paper spends most of its 10 KB on blank page.
- Drop the image here (JPG, PNG, WebP, GIF, BMP or AVIF). The target is already 10 KB and the output is JPG.
- Download, then check the file shows under 10 KB before you upload it.
What 10 KB does to a picture
- Signatures and stamps survive best: dark ink on a plain background compresses very efficiently.
- Photos lose fine texture first — hair, fabric, background detail — while faces stay recognisable at thumbnail size.
- If the result looks blocky, the tool had to use a low quality. Crop tighter and run it again; the saved bytes go to the part that matters.
Where a 10 KB limit usually appears
- Signature uploads on application and exam forms, which often give a range such as 10–20 KB.
- Thumb-impression and handwritten declaration images on the same forms.
- Small avatar and thumbnail fields on older websites and intranets.
- Limits differ between forms and between years, so go by the number in your own form's instructions.
Why this page writes JPG
Forms that cap uploads at 10 KB usually list JPG/JPEG as the accepted type, and every upload checker can read it. WebP would hold slightly more detail at the same size, but a form that does not accept WebP rejects the file however small it is. If your form does take WebP, the 20 KB and 50 KB pages use it.
How the 10 KB preset works
- Target: 10 KB, counted as 10,240 bytes. The result is never larger than that.
- Quality is lowered first; the pixel size is reduced only when quality alone cannot get under 10 KB.
- If your form counts a kilobyte as 1,000 bytes, type 9 in the target box to leave a margin.
- If your form also sets a minimum size or exact pixel dimensions, the photo and signature resizer handles both.
Try other KB presets
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- Resize Images to Exact Dimensions
- Photo & signature resizer
Exact pixel size and KB range for exam and application forms
FAQ
Can a phone photo really go down to 10 KB?
Yes, but only by getting much smaller in pixels. A typical phone photo is 2–4 MB, a few hundred times the budget, and no quality setting closes a gap that large. The tool reduces the dimensions until a JPG fits under 10 KB and shows you the final width and height — for a face that is usually about two hundred pixels across, plenty for an on-screen form check and too small to print.
What size should a signature be for a 10 KB limit?
Forms that ask for a 10–20 KB signature often quote dimensions around 140 × 60 pixels, but this varies, so use the numbers in your form's instructions. At that size a clean signature is usually well under 10 KB. If the form also has a minimum file size, use the photo and signature resizer, which sets exact dimensions and keeps the file between a minimum and a maximum.
Why is my 10 KB image blurry?
At 10 KB every byte counts, and blank paper, busy backgrounds and large dimensions all spend bytes the important part needed. Crop to just the signature or face, use a plain background and run it again. The result shows the quality the tool chose; if it is below about 40, cropping will help more than anything else.
Will the file count as under 10 KB on every website?
The target is 10,240 bytes, which is how most sites define 10 KB, and the output never exceeds it. A few sites count 1 KB as 1,000 bytes and would read 10,200 bytes as 10.2 KB. If your form is strict about that, type 9 in the target box.
Is my signature uploaded anywhere?
No. The image is decoded, resized and compressed on your own device, and the result is saved straight from it. Nothing is sent to a server, which matters for signatures and ID photos in particular.
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