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convertirdocs

Compress image to 20 KB

Lower the file size of a photo or signature to 20 KB or less, for online application forms that keep attachments very small.

100% free · no sign-upYour files never leave your device

or drop them here

How to compress an image to 20 KB in 3 steps

  1. 1

    Select your photo or signature. The target is already set to 20 KB.

  2. 2

    Choose JPG, PNG or WEBP as output, add a maximum width if the form asks for one, and press “Process”.

  3. 3

    Look at the preview and the final size, then download.

Your files never leave your device

This tool runs entirely inside your browser. The file is never uploaded to any server: it is read, processed and downloaded on your own device. When you close or reload the page, it is gone from memory.

Exam, recruitment and scholarship forms

Online application forms for entrance exams, public-sector recruitment and scholarships frequently ask for two small images: a recent photograph and a scanned signature. Both are kept tiny so the system can handle huge numbers of candidates, and limits in the range of 10 to 50 KB are common. A 20 KB target fits many signature fields and some small photo fields.

Always read the form's own instructions. Some specify not only a maximum size but also a minimum, a pixel size, a background color or a file format. This page handles the size; the rest is up to the photo you take.

Getting a face photo into 20 KB

A modern phone photo can be 3 MB or more, around 150 times too big. The quality alone can't close that gap, so ConvertirDocs first looks for the best quality that fits and, if that isn't enough, reduces the image dimensions step by step. You end up with a small but clear photo rather than a full-size picture full of blocky artifacts.

Help it by cropping first. Use “Crop image” to frame your head and shoulders, often with a 3:4 ratio for portrait photos, and remove the background clutter. A plain, light background also compresses better than a patterned wall.

Format and dimensions

For photos, JPG is the safe choice and is accepted almost everywhere. WEBP can be lighter at the same quality, but many official forms don't accept it. PNG is best for flat graphics, not photos.

If the form asks for specific dimensions, such as a set width and height in pixels, set them with “Resize image” before compressing. Otherwise you can leave the maximum side empty here and let ConvertirDocs decide how much to shrink.

Before you submit

Open the downloaded file and zoom in. Your eyes, the outline of your face and the strokes of your signature should be clear. If they look smeared, try cropping tighter and compressing again from the original, not from the compressed copy, since every round of compression removes a little more detail. Name the files the way the form suggests, keep a copy of what you uploaded, and note the final size shown on screen in case the portal reports an error.

Honest results, kept on your device

If 20 KB can't be reached, you get the smallest version and a message saying so, instead of a file that the form will reject. Your photo is processed in the browser and isn't uploaded. EXIF data, including GPS location, is removed, and the orientation of the camera is respected so your portrait isn't sideways. It's free, with no sign-up and no watermark.

Frequently asked questions

Will my photo still look like me at 20 KB?

Yes, if it's cropped to your face and shoulders. A tight crop leaves more of the 20 KB for the part that matters.

The form says between 10 and 20 KB. What should I type?

Type a target near the upper end, such as 19 KB, and check that the result isn't below the minimum.

Can I compress the photo and the signature together?

Yes. Select both. Each gets its own 20 KB target and they download in a ZIP or one by one.

Why did the image get smaller in pixels?

Because quality alone couldn't reach 20 KB. ConvertirDocs reduces the dimensions in steps only when needed.

Is my photo uploaded to a server?

No. It's processed in your browser and stays on your device.

Is there a watermark or a usage limit?

No. It's free, with no account and no limit on how many images you compress.

Can I use the result on my phone?

Yes. The tool works in modern mobile browsers, so you can photograph, compress and upload from the same phone.

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