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Compress Image to KB

Make a photo or signature fit any upload limit, like 20–50 KB, under 100 KB or 240 KB for a US visa. Set a minimum and a maximum, lock exact pixels if your form needs them, and download a JPG that fits the first time.

Updated 5 November 2026

Drop your photo here JPG, PNG or WebP. You can also paste an image.
Choose photo

What size does your form need?

KB
KB
px
px
Your form will tell you the limits, usually near the upload button. 1 KB = 1,024 bytes. We leave a small safety margin so the file is never rejected for being 1 byte over.
🔒 Your photo never leaves your device. Everything happens in your browser.
New file size
Original size
New size
Dimensions
FormatJPG
Quality used
Download JPG

How it works

1

Add your photo or signature. It stays on your device and is never uploaded.

2

Tap the size your form asks for, or type the minimum and maximum in KB. Choose exact pixels if the form gives them.

3

Press Compress, check the preview, then download your JPG and upload it to your form.

Example

Example only. A university form asks for a photo between 20 KB and 50 KB. Your phone photo is 3.2 MB at 3000 × 4000 pixels. Choose Form photo (20–50 KB) and the tool lowers the JPEG quality step by step, and shrinks the pixels if it has to, until the file lands just under 50 KB. A typical result is about 45–49 KB at roughly 400 × 530 pixels, which is plenty for a clear face on a form.

Helpful guides

Where these limits come from

Frequently asked questions

Add your photo, tap Under 50 KB (or type 50 in Maximum size) and press Compress. The tool finds the highest JPEG quality that stays under 50 KB. If that is not enough, it also reduces the pixel size a little. Download the JPG and upload it to your form.

Many forms have a minimum size as well as a maximum, for example 20–50 KB. A small or simple image, like a signature, can be lighter than the minimum even at full quality. Enter the minimum in the tool and it will add harmless empty data to the file to reach it. The picture itself does not change, and the tool tells you when it does this.

For the DS-160 and the DV Lottery, the U.S. Department of State asks for a square JPEG between 600 × 600 and 1200 × 1200 pixels, no larger than 240 KB. Tap US visa photo to set 600 × 600 pixels and a 240 KB maximum. The photo itself must still meet the face, background and lighting rules.

No. The compression runs entirely in your browser using your device. Your photo is never sent to OrbitCorner or anyone else, which matters for ID photos and signatures.

A very small limit leaves little room for detail. Crop the photo closer to your face before adding it, use a larger maximum if the form allows, or set a smaller pixel size so the quality can stay higher. Signatures look best when scanned on plain white paper.

PNG and WebP work, and the tool always saves a JPG, which almost every form accepts. Transparent areas become white. Most browsers cannot open HEIC files, so on an iPhone save or share the photo as a JPG first, or set Settings, Camera, Formats to Most Compatible.

Upload limits are different on every form and can change. Always follow the size, pixel and format rules printed on the form you are filling in. This tool only changes the file size and pixels. It cannot fix other reasons a photo is rejected, such as the background, lighting or head position.