ConvertorLab

Resize Image to 20KB

Make any photo smaller than 20KB for an online form. The 20KB target is already set, so add your image, press Compress and download. Works with JPG, PNG, WebP and iPhone photos. Free, and nothing is uploaded.

Import and settings

Add image files, choose compression settings, then process the batch.

Drag and drop images here or

Supports JPG, JPEG, PNG, WebP, GIF, BMP, SVG, HEIC, and PDF. Limits: max 200 files - max 1 GB total.

With a target size set, quality and dimensions are chosen for you. Modes adjust quality and resize only. For PNG graphics, choose WebP or JPG output when you need real size reduction. For HEIC, the browser decodes locally and exports as JPG, WebP, or PNG.

Files and downloads

No files selected.

Open one compressed result before replacing your original. Some files are already optimized, so keeping the original can be the best output.

Resize and compress an image to 20KB

When a form says the photo must be under 20KB, it means the file size, not the width and height. This page has the 20KB target preselected. Add your photo, press Compress, and you get the clearest version that fits, along with its final size and pixel dimensions.

20KB is a typical limit for signature uploads and small passport-style photos on exam and job forms. A photo at 20KB usually ends up around 200 to 350 pixels on the long side, depending on how much detail it has.

How to resize an image to 20KB

  1. Add the photo. JPG, PNG, WebP and iPhone HEIC files work.
  2. Check the target. 20KB is already selected under Target size.
  3. Press Compress. The result card shows the new size in KB and the dimensions.
  4. Download the image and upload it to your form.

Getting a clear photo at 20KB

For a signature, crop tightly around the ink first. A tight crop at 20KB looks far sharper than a whole page squeezed into the same size.

Keep the output as JPG. It is the format nearly every form accepts, and it holds photos far more efficiently than PNG at small sizes. If a form wants both exact pixels and a KB limit, use Resize Image, which lets you set both at once, including sizes in centimeters.

Free, private and works on your phone

The photo is processed in your browser and never uploaded. There's no sign-up or watermark, and it works the same on Android, iPhone and computers.

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SSC Signature Size and Photo Size for the 2026 ApplicationSSC Signature Size and Photo Size for the 2026 ApplicationSSC wants a JPG signature between 10 KB and 20 KB, about 6 cm by 2 cm.Read guidePAN Card Photo Size in KB, cm and PixelsPAN Card Photo Size in KB, cm and PixelsProtean's online PAN form wants a 3.5 x 2.5 cm colour photo under 20 KB and a 2 x 4.5 cm signature under 10 KB, both at 200 DPI.Read guideResize images for upload formsResize images for upload formsHit pixel and KB limits on the first try.Read guideImage upload checklistImage upload checklistWhy forms reject photos.Read guide

Resize image to 20KB questions

How do I reduce a photo to 20KB?

Add the photo; the target is already set to 20 KB. Press Compress. Quality is lowered first and the dimensions shrink only if needed, and the result card shows the final size and pixels.

Will my photo look blurry at 20KB?

It depends on the starting photo and the size limit. The tool keeps the highest quality that fits, and you can check the result before downloading.

Can I do several photos at once?

Yes. Add a batch and each photo is compressed to under 20KB, then download them separately or as a ZIP.

Can I pick a different size?

Yes. Change the Target size menu, or choose Custom and type any KB value.

Are my photos uploaded?

No. Everything runs in your browser on your device.