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Image Resizer
in KB.

Online forms often reject photos and signatures that are too big. Pick a target such as 20 KB, 50 KB or 100 KB and get a JPEG that fits the limit with the best quality possible — in seconds, right in your browser.

100% FreeNo Sign-upNo WatermarkExact KB TargetImages Stay on Your Device

Upload & choose size

Exact pixel size (optional)

Leave empty to keep the original proportions. Setting both crops from the centre — it never stretches.

Choose an image to begin.

Preview & download

Your resized image appears here
  • Finds the highest quality under your limit
  • Shrinks dimensions only when it must
  • Nothing is uploaded — works offline after loading

How to reduce a photo to a specific size in KB

  1. Upload a JPG, PNG or WebP photo, scan or signature.
  2. Choose a preset target (10, 20, 30, 50, 100, 200 or 500 KB) or type the exact limit from your form.
  3. Optionally set the exact width and height in pixels if the form asks for dimensions, such as 200 × 230 px.
  4. Click “Resize to target”. The tool finds the highest quality that stays under your limit, then you can download the JPG.

Why do forms limit file size in KB?

Government portals, exam boards, job sites and visa systems process thousands of uploads every day, so they cap each file at a fixed size such as 20 KB, 50 KB or 100 KB. A modern phone photo is often 2–5 MB — up to 250 times too big. Simply changing the width and height does not guarantee the file size, which is why uploads keep failing.

This tool measures the real file size after compression. It first lowers JPEG quality step by step and only reduces the pixel dimensions if the target still cannot be reached, so you keep the clearest possible image.

Other quick sizes: 20 KB · 50 KB · 100 KB. Need a passport-style photo first? Try the passport photo maker or the DS-160 visa photo maker.

Frequently asked questions

How do I reduce a photo to 50 KB?

Upload the photo, select 50 KB and click “Resize to target”. The tool lowers JPEG quality first and only shrinks the dimensions if it has to, so the result stays as sharp as possible while staying under 50 KB.

Will the image lose quality?

Some quality is always lost when a file is made smaller. This tool searches for the highest quality that still fits your limit, so you lose as little detail as possible.

Can I set exact pixel dimensions as well as KB?

Yes. Enter a width and height in pixels, for example 200 × 230 for a photo or 140 × 60 for a signature, and the file will also be compressed to your KB limit.

Which file format do I get?

You get a JPG (JPEG) file, which is accepted by almost every form and portal. WebP is also available for websites.

Is my image uploaded to a server?

No. Resizing happens on your device in your browser. Your image is never uploaded or stored.

Does it work on mobile?

Yes. It works in current versions of Chrome, Safari, Edge and Firefox on phones, tablets and computers.

THIS FREE TOOL IS MADE BY AWAIS GFX

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All tools run privately in your browser — no sign-up, no watermark.

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