Resize Image to 20KB — Free, No Upload

20KB means 20,000 bytes

Make one photo 20KB or smaller for a form that rejects larger JPGs. Processing stays in this tab. If 20KB would make the picture useless, you get the real size instead of a false success.

The download is a JPG

PNG and WebP photos are re-saved as JPEG. Transparent areas become white. A maximum of 20 KB means 20,000 bytes. A minimum, if you set one, means N × 1,024 bytes.

Choose photos

Up to 10 photos, 20 MB each. They are resized one at a time and are not uploaded.

Target size

The maximum is N × 1,000 bytes. Leave pixels blank to let the file size decide the dimensions.

Cap 20,000 bytes

When a form says the photo must be under 20KB

20KB here means 20,000 bytes. Protean PAN instructions have listed a photograph around 3.5×2.5 cm, 200 DPI, and 20 KB or smaller. That is a photo rule, not a signature rule. The signature on those instructions has been listed nearer 10 KB. Use the signature resizer for that file, and open the live guideline before you submit, because the numbers move between cycles.

SSC and several railway forms capture the candidate photo through the webcam. They do not want a 20KB photo file. Do not resize a portrait for those exams unless the notice you are holding asks for one.

What changes inside the file

A phone photo is far larger than 20,000 bytes, so the export is a smaller JPEG. Faces stay recognisable at this size when the crop is tight. A full-length group photo will not. Set the width and height if the form prints them, and tick crop when the portal wants an exact shape rather than white bars.

If you also need the file to stay above a number, turn on the minimum. The page will say when a JPEG comment was added to reach it. Download only after the byte count on the card matches the rule in your notice.

Other sizes

Related Free Tools

Signature resizer

KB band for a scanned signature

Image compressor

Quality slider, no KB target

HEIC to JPG

Convert an iPhone photo first

How to use the Resize Image to 20KB

  1. Add the photo

    JPG, PNG, WebP, or HEIC, up to 20 MB. It stays on your device.

  2. Leave 20KB selected

    That cap is 20,000 bytes. Add a width and height only if your form prints them.

  3. Resize and read the card

    Check the byte count and the pixel size. If the file was padded to a minimum, the card says so.

  4. Download the JPG

    Use the file only if the numbers match the notice you are holding.

Resize Image to 20KB FAQ

Is 20KB the PAN photograph size?

Protean has listed a PAN photo around 3.5×2.5 cm, 200 DPI, and 20 KB or smaller, and a signature nearer 10 KB. Recheck the live guideline. Use the signature resizer for the signature, not this preset.

Does SSC want a 20KB photo?

No. SSC CGL/CHSL 2026 captures the photo live and asks for a signature file, not a 20KB portrait. Read your notice.

Why did the pixel size change?

Quality is reduced first. If the JPEG is still over 20,000 bytes, the picture is scaled down and the card shows the new width and height.

Are iPhone HEIC photos supported?

Yes. HEIC is decoded in the browser only when you add one, then saved as a JPG.

Is it free?

Yes. No sign-up and no watermark.

Quick answers

How do I resize a photo to 20KB for an online form?

Open a resize tool, set the maximum to 20KB, and export a JPG at or under 20,000 bytes. That decimal cap also satisfies a portal that treats one kilobyte as 1,024 bytes. Protean PAN guidelines have listed a photograph around 3.5 by 2.5 centimetres, 200 DPI, and 20KB or smaller — type those values if that is your form, and recheck the live page because the figure changes. Do not use a 20KB portrait for SSC or RRB exams that capture the photo live and only ask you to upload a signature. If 20KB cannot be reached without ruining the face, the honest result is the real file size, not a success message. Type 3.5 by 2.5 centimetres and 200 DPI when that PAN photo rule is the one on your screen. EasyPDFHub does the resize on your device and shows the byte count before you download.