Resize and compress photos for online forms.
Set the pixel dimensions and maximum file size you need. Free, with no photo uploads.
Make it yours
Your photo
A little smaller. A lot simpler.
Drop a photo here to get started.
How to resize a photo to a KB limit
Pick a photo
From your phone or computer.
Your file never leaves your device.
Set your limits
Enter your limit, such as 100 KB, and any required width and height in pixels.
Save and go
Preview your result and download.
No signup or watermark.
A smaller photo, ready for your form
Our built-in sample started at 233.2 KB and 1600 × 1067 pixels. With an 800-pixel width, proportions locked and a 100 KB limit, the JPG result was 94.0 KB at 800 × 534 pixels.
Your result depends on the image and browser. Always preview the downloaded photo before submitting it.
1600 × 1067 px → 800 × 534 px
Below the 100 KB limitPhoto resizing questions
Check your form’s own instructions for its accepted format, dimensions and file-size range.
What is the difference between KB and pixels?
Pixels describe your photo’s width and height. KB describes how much storage the file uses. Two photos with the same dimensions can have different file sizes. SizeKit lets you set both the dimensions and a maximum KB limit.
How do I compress a photo to 100 KB?
Choose a JPG, PNG or WebP photo, select 100 KB, and enter any dimensions your form requires. Keep proportions on to preserve the original shape. Select JPG or WebP, click Resize & compress, then preview and download the result.
Will my photo be exactly 100 KB?
No. The setting is a maximum, not an exact size or a minimum. A smaller result is normal. SizeKit uses 1 KB = 1,000 bytes. If your form specifies a minimum as well as a maximum, check that the downloaded file meets both.
Does compression reduce image quality?
It can. SizeKit adjusts JPG or WebP quality to meet your limit while keeping your chosen dimensions. Very small limits can blur fine details. Use the largest file size your form allows, and check faces, text and signature strokes before submitting.
What if the image cannot fit under my limit?
SizeKit shows an error instead of silently changing your chosen dimensions. If the form allows it, reduce the width and height or increase the KB limit. If both requirements are fixed, try a less detailed image or crop it in a photo editor first.
How do I avoid stretching my photo?
Leave Keep proportions on and change one dimension. If your form requires a different shape, crop the photo in a photo editor before resizing it here. Turning proportions off lets you set both dimensions independently, but may stretch the image. SizeKit does not crop photos.
Are my photos uploaded or stored?
Photo resizing and compression happen in your browser. SizeKit does not send the photo you select to a server or store it in an online account. Download your result before closing or reloading the page.
Which file formats can I use?
Choose a JPG, PNG or WebP image up to 20 MB and 40 megapixels. Download as JPG or WebP, with output dimensions from 1 to 4096 pixels per side. JPG fills transparent areas with white; WebP can preserve transparency. PNG output, HEIC and PDF are not supported. Animated WebP exports as a still image.
Get your photo accepted, without the guesswork
SizeKit reduces image quality to meet your limit while keeping your chosen dimensions. If the limit is too small, we’ll ask you to adjust it. Use WebP to preserve transparency. Animated images export as a still frame.