Compress Image to 20kB

Crop closely around the ink, choose JPG, set the exact dimensions from the notice — often about 140 × 60 px — and target 18 or 19 kB. A clean black-on-white signature should remain crisp at that size.

It can remain recognisable as a small portal image if it is cropped to head and shoulders, evenly lit and resized to roughly 200 × 230 px. It will not look like the camera original when enlarged, so choose 50 kB whenever the form permits it.

The tool keeps the highest-quality encoding that lands safely under your target, and encoders can only move in discrete steps. A little margin also avoids rejection by sites that interpret a kilobyte as either 1,000 or 1,024 bytes.

Use a higher target, such as 30–35 kB. A requirement of 20–50 kB includes a minimum, and a result just below 20 kB may fail even though it satisfies the upper limit.

Use the format printed in the instructions; Indian exam and bank application guides usually ask for JPG or JPEG. PNG is useful for a logo or transparent graphic, but many upload fields reject it even when the byte size is correct.

Mb2KbSizer is a free image and PDF compressor that runs inside your web browser. You pick a file, type the size you need, such as 100 kB, and it shrinks the file to land at or just under that number. Most people use it for upload forms that reject big files: exam registrations, passport and visa applications, job portals, bank KYC and college admissions. It is just as handy for lightening photos before you email them or put them on a website. There is a [single-image tool](/), a bulk compressor for up to 200 photos at once, and a PDF compressor, all built on the same no-upload principle.

Yes. Every tool on this site is free, and we intend to keep it that way. There is no sign-up, no premium tier, no daily quota and no watermark on the output. Compress one photo or three hundred; nothing counts against a limit. A few ads on the page pay for hosting. Because the heavy lifting happens on your own device rather than on our servers, each extra user costs us almost nothing, so there is no reason to charge. We do not sell an app, a plan or an API either, so you will never be nudged towards a paid version.

No installation is needed. Mb2KbSizer is a web page, so it works the moment it loads in current Chrome, Edge, Firefox, Safari or Samsung Internet on a phone, tablet or computer. Nothing is downloaded to your device except the page itself, and it does not ask for storage or camera permissions. If you use the tool often, you can add it to your phone's home screen from the browser menu and it will open like an app. It still needs an internet connection to load, though, so treat this as a shortcut rather than an offline program. There is no Play Store or App Store version.

Three steps, usually under a minute.

1. Add your photo. Drag it onto the upload box, tap browse to pick it from your gallery, or paste it from the clipboard with Ctrl/Cmd + V.
2. Set the target. Type a number and choose kB or MB, or tap a quick chip from 20 to 350 kB. On a preset page the field is already filled in. If a form demands exact pixel dimensions, set them in the resize option.
3. Press Compress, then Download. You get a before/after slider, the output dimensions, the quality used and the exact byte count, so you know it will pass before you submit it.

You can upload JPG, PNG, WebP, GIF (the first frame is used), BMP and AVIF, provided your browser can decode the file. HEIC photos from an iPhone open in Safari and other browsers with HEIC support; elsewhere the tool explains how to set the camera to Most Compatible so new shots are saved as JPG. Files up to 60 MB are accepted. For output, Auto gives a JPG in most cases and keeps WebP as WebP; you can also force JPG, WebP or PNG. PNG is lossless, so a PNG target is reached only by reducing dimensions, which is why JPG is the better pick for a small photo.

Strictly speaking, you never upload anything. When you choose a file, the browser reads it from your device and does the resizing and re-encoding in a background worker on that same device. No copy travels to our server or to anyone else's; the only thing our server sends you is the page. A useful side effect is that the browser rebuilds the image from its pixels alone, so EXIF data such as the camera model, the date taken and the GPS location is dropped from the output. That makes the compressed photo safer to share than the original you started with.

No. We have no image storage of any kind, because the file never reaches us in the first place. It sits in your browser's memory while you work, and the compressed version exists only on your device once you download it. Close or refresh the tab and both are gone. We keep no history, no gallery and no cache on our side, and we cannot see what you compress. Our web host records ordinary server logs, such as the time of a page visit and the browser used, but those cannot contain your pictures. For the full detail, read our privacy policy.