Resize Image to 20 KB
Get any JPG or PNG photo down to 20 KB or less — the size online forms and signature uploads demand — with the best possible quality. Everything runs in your browser; your photo is never uploaded.
Click to choose an image, or drag & drop
JPG or PNG · processed on your device, never uploaded
How to use
- 1Drop your photo or signature scan onto the box.
- 2The target is already set to 20 KB, the limit most form and signature uploads impose.
- 3Set the width and height if the form demands exact pixel dimensions.
- 4Download the result — the final file size is shown so you can confirm it fits.
Other versions of this tool
- Image Resizer (Exact KB)Resize and compress any photo to exact dimensions and an exact file size (20KB, 50KB, 100KB…) with presets for passport photos, IDs, signatures and more.
- Resize Image to 50 KBCompress any photo to 50 KB or less — the most common photo-upload limit.
- Resize Image to 100 KBCompress any photo to 100 KB or less — for email attachments and web images.
Frequently Asked Questions
How do I make a photo exactly 20 KB?
Upload your image and click Resize — the tool automatically finds the highest JPEG quality that keeps the file at or under 20 KB. If the form also requires a minimum size (like 10–20 KB), set the minimum and the tool pads the file safely.
What needs a 20 KB image?
Signature uploads and photo fields on many online application forms, government portals and job applications commonly demand images between 10 KB and 20 KB.
Will my image look bad at 20 KB?
Small images (like signatures or ID photos) look fine at 20 KB. For large photos, reducing the dimensions first (untick “keep original dimensions”) preserves more visual quality at the same file size.
Why does my file come out at 19 KB rather than exactly 20?
Because JPEG compression cannot hit an arbitrary byte count exactly. The tool searches for the highest quality that stays within your limit, so you get as close as possible from below — which is what upload forms check for.
My signature looks blotchy at 20 KB. What should I change?
Reduce the pixel dimensions rather than leaning on quality. A signature scan at 600×200 will look far cleaner at 20 KB than the same image at 2000×700, because there are fewer pixels sharing the same budget.
Is the image still a JPG afterwards?
Yes. JPEG is what makes a hard size target achievable, and it is the format these forms expect. A PNG at 20 KB would look considerably worse for a photograph.