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 100KB
Get a JPG or PNG under 100KB 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 100KB
- Select your photo (JPG, PNG, HEIC, WEBP…) or drop it on the page.
- Check the target: 100KB is already set. Change it if your form asks for another limit.
- Click "Compress to 100KB". 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.
100 KB is the most requested limit for photos and document scans on online forms, and a good size for images sent by email or chat without losing detail. Photos of about 800 to 1000 pixels wide fit at high quality.
The tool accepts JPEG, PNG, WEBP and HEIC photos from an iPhone. HEIC photos are converted to JPG automatically, because many forms do not accept HEIC.
Why use our Compress image to 100KB tool
Under the limit, every time
Quality and dimensions are adjusted automatically until the file is 100KB 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
Can I compress an iPhone photo (HEIC) to 100 KB?
Yes. Upload the HEIC file directly. It is converted to JPG and compressed under 100 KB in one step.
How do I reduce an image to 100KB?
Select the image, keep the target at 100KB and click "Compress to 100KB". The image you download is 100KB 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 100KB?
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.