Compress Images to 20 KB, 50 KB, 100 KB, or Any Size
Shrink photos for email, websites, and upload forms. Pick an exact limit such as 50 KB or 200 KB, or let the tool aim for about 1 MB. Add one image or several. Your photos are compressed in your browser, not uploaded.
How to compress an image
- 1Choose a size. Pick About 1 MB for everyday sharing, or a limit such as Under 50 KB. Use Other size to type any limit the form asks for.
- 2Add your images. Drop one or more photos onto the box, or tap to choose them from your phone or computer.
- 3Download. Each image has its own download button showing the old and new size. Check the new size is under the form's limit.
Compress a photo or signature for an online form
Exam, job, and government portals often ask for a photo under 50 or 100 KB and a signature under 20 KB. Choose the matching limit and add the image. The tool keeps as much quality as the limit allows, first by saving a more efficient JPG and then, only if needed, by reducing the pixel dimensions.
Results are always a little under the number you pick. A limit of 50 KB gives a file of at most 50,000 bytes, which also passes portals that count 1 KB as 1,024 bytes.
Many forms also set pixel dimensions, such as 200 by 230 pixels, and a minimum size as well as a maximum. For SSC, IBPS, SBI, RRB, UPSC, NEET, JEE and CUET, the Exam Photo and Signature Resizer sets the pixels and the KB range in one step. For other forms, set the dimensions with Resize Image, then compress the result here. Our guide to photo and signature sizes for online forms covers the usual requirements.
What the size options do
- About 1 MB: shrinks large photos to roughly 1 MB or less and keeps the format, so JPG stays JPG and PNG stays PNG. Very large photos may also be scaled down slightly.
- Under 200, 100, 50, or 20 KB, or Other size: saves a JPG under that limit. Transparent areas in a PNG become white, which is what forms expect. Very small limits may also reduce the width and height.
- If an image is already under the limit, you get it back unchanged.
Tips for very small limits
Crop away background you do not need with Crop Image before compressing. Fewer pixels to store means more quality left for the face or signature.
For signatures, sign in dark ink on plain white paper and photograph it in good light. A clean signature compresses to under 20 KB and still looks sharp.
JPG, PNG, or WebP?
- Photos: JPG gives the smallest files for the same visible quality.
- Screenshots, logos, and images with text or sharp edges: PNG keeps edges crisp. If a PNG photo is very large, convert it to JPG first.
- Images for your own website: WebP is usually 25 to 35 percent smaller than JPG at similar quality and works in all modern browsers.
Frequently asked questions
Can I compress an image to exactly 50 KB?
You can get it under 50 KB, which is what forms check. Choose Under 50 KB: a large photo comes out just below 50 KB, and a small one may come out lower because it needs less space.
Why did my image get smaller in pixels?
For very small limits, quality alone cannot get a large photo under the limit without visible blocks, so the width and height are reduced too. Resize it to the form's dimensions first if you need exact pixels.
Will compression reduce quality?
Slightly. With About 1 MB the difference is very hard to see on screen. With limits like 20 KB the image is smaller and softer, which is normal for form uploads.
Can I compress several images at once?
Yes. Add as many as you like; each gets the same size limit and its own download button.
What if the image is already under the limit?
It is returned unchanged, so you never get a worse copy of a file that already fits.
Are my photos uploaded?
No. Compression happens in your browser and the images stay on your device.
Want more detail? Read on our blog: How to Optimise Images for a Website: Size, Format, and Compression