Image files
Supported image formats include JPG, PNG, WEBP, HEIC, AVIF, SVG, GIF, BMP, TIFF and ICO. Each has strengths: JPG for photos, PNG for transparency, WEBP and AVIF for fast websites.
Compress image to 20KB
Get a JPG or PNG under 20KB for application forms, profiles and portals. The highest quality and largest dimensions that fit are kept automatically.
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How to compress an image to 20KB
- Select your photo (JPG, PNG, HEIC, WEBP…) or drop it on the page.
- Check the target: 20KB is already set. Change it if your form asks for another limit.
- Click "Compress to 20KB". The quality is lowered only as much as needed, then the dimensions if the limit is very small.
- Download your image and upload it. The final size is shown on screen.
Small portrait photos for online applications (exams, recruitment, ID renewals, student cards) are often limited to 20 KB or to a range of 20 to 50 KB. A photo from a phone weighs about 3 MB, so it must become around 150 times lighter.
The compressor lowers the quality only as much as needed and, if that is not enough, reduces the dimensions, so the face stays clear. Crop the photo to head and shoulders first for the best result.
Why use our Compress image to 20KB tool
Under the limit, every time
Quality and dimensions are adjusted automatically until the file is 20KB or smaller.
Keeps the format
JPG stays JPG and PNG stays PNG. HEIC, BMP, GIF and TIFF photos are saved as JPG, the format every form accepts.
Batch and private
Compress up to 30 images at once. No sign-up, files deleted after 1 hour(s).
About the file formats
Frequently asked questions
My form asks for a photo between 20 and 50 KB. Which tool should I use?
Use Reduce image size in KB and type 45. The photo will be just under 45 KB, above the minimum and below the maximum.
How do I reduce an image to 20KB?
Select the image, keep the target at 20KB and click "Compress to 20KB". The image you download is 20KB or smaller.
Will my photo get smaller in pixels?
Only if needed. The JPEG quality is lowered first, which keeps the width and height. If the photo is still too heavy at a reasonable quality, its dimensions are reduced step by step until it fits.
Can I compress a PNG to 20KB?
Yes. PNG images get an optimised colour palette and, if needed, smaller dimensions. They stay in PNG format and keep their transparency.
Does 1 KB mean 1000 or 1024 bytes here?
We count 1 KB as 1000 bytes, so your image is accepted by forms that use either definition.
Is MajorPDF free to use?
Yes, completely free. There is no registration and no watermark is added to your files.
Are my files safe?
Files are uploaded over an encrypted connection and deleted automatically after 1 hour(s). After downloading you can also delete them immediately with one click.
What is the maximum file size?
Each file can be up to 50 MB.