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Compress an image to 50 KB

Shrink a photo below 50 KB for an online form: the best possible quality is found automatically. Free, no sign-up, nothing is uploaded.

  • Free
  • No sign-up
  • No file uploaded
  • Windows, Mac, Android, iPhone

Your files stay on your device: nothing is uploaded.

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About this tool

A website asks for an image under 50 KB, for example an ID photo to attach to an online application? Drop your photo: the tool automatically finds the highest quality that fits under 50 KB, and only reduces the dimensions when it has to.

When to use it

Government forms

Many online services reject heavy files: an ID photo to attach to an online application often has to be under 50 KB.

Applications and registrations

Schools, exams, job offers and visas often set a maximum size per file.

Messaging and email

A light image sends faster and goes through even on a slow connection.

How to use

  1. Choose one or more images (JPG, PNG, WebP).
  2. Keep 50 KB as the target size, or change it.
  3. Click “Compress” and check the resulting size.
  4. Download the image, or all images as a ZIP.

How it works

The tool tries several quality levels (binary search) and keeps the highest one that stays under 50 KB. If even the lowest quality is not enough, it reduces the dimensions step by step.

Everything happens in your browser: your images are never uploaded to a server.

Tips for best results

  • Choose JPG: at the same size it keeps far more detail than PNG for a photo.
  • Crop around the subject first with “Crop an image”: less area means more quality for the same size.
  • Also check the dimensions the form requires (in pixels) and use “Resize an image” if needed.
  • Keep the original: a compressed image never gets its quality back.

Common problems and fixes

The form still rejects the image

Some sites count 1 KB as 1,000 bytes. Aim a little lower, for example 48 KB, and check whether they also require exact dimensions.

The image became blurry

50 KB is little for a large photo. Crop around the subject or lower the maximum size: the image will be sharper at the same weight.

The PNG is still too heavy

PNG can only be compressed by reducing its dimensions. Choose JPG or WebP as the output format.

Frequently asked questions

How does the tool reach exactly 50 KB?

It compresses several times at different qualities, keeps the best one that fits under the target, and only shrinks the image as a last resort.

Are my images uploaded to a server?

No. Everything happens in your browser and your images never leave your device.

Can I compress several images at once?

Yes: each image is compressed under the target size, and you can download everything as a ZIP.

Which format should I choose?

JPG for a photo or a scanned document, WebP if the website accepts it, PNG only for a logo or a diagram.

Is metadata kept?

No: the compressed image no longer contains EXIF data, so no GPS location, which also saves a few KB.

Related searches

Still stuck?

Ask on the forum: the category, the tool, your device sheet and the test result will be filled in for you.