What does the image compressor do?
Most phone photos are 2–6 MB. That's far too large for job portals, exam and government application forms, email attachments and web pages. Many forms ask for a photo under 50 KB or a signature under 20 KB, and they reject anything bigger without explaining why.
This compressor hits the size you ask for while keeping the image as sharp as possible. It works in two stages. First it searches for the highest quality setting that fits under your target, which keeps the full resolution. Only if quality alone can't get there does it gently reduce the dimensions, a step at a time, until the file fits. The result shows the final size, the percentage saved and the new dimensions, so you know exactly what you're uploading.
You can also compress by quality instead of by size, which is handy for websites: quality 70–80 usually cuts a photo's weight by half or more with no visible difference. Prefer an even smaller file? Save as WebP, which is typically 25–35% smaller than JPG at the same visual quality.
Using the Image Compressor for your business
Heavy images are the most common reason business sites fail Core Web Vitals. Compressing a few photos fixes one page; fixing the theme, lazy loading and image delivery fixes every page. That's what our technical SEO service does, and for stores with hundreds of product photos our ecommerce SEO team builds image optimisation into the catalogue workflow.
How to use the Image Compressor
- Upload your images. Drag and drop, click to browse or paste. JPG, PNG, WebP, HEIC and AVIF are all accepted, up to 10 files.
- Choose a target size. Pick 20 KB, 50 KB, 100 KB or 200 KB, enter your own limit, or compress by quality percentage.
- Pick the output format. Keep the same format, or switch to WebP for the smallest website images or JPG for forms.
- Click Compress. Each image is compressed to the closest size under your target, keeping as much detail as possible.
- Check and download. Compare the before and after sizes, preview the result and download one file or a ZIP of all of them.
Why use this image compressor
Exact KB targets
Ideal for online forms that demand a photo under 50 KB or a signature under 20 KB.
Quality first
Quality is reduced before dimensions, so you keep as much detail as possible at the size you need.
Faster websites
Smaller images load faster and help your Largest Contentful Paint, one of Google's Core Web Vitals.
Batch and ZIP
Compress a whole set of product photos or documents at once and download them together.
Tips for compressing images without losing quality
Start from the original photo, not a copy that has already been compressed. Every round of JPG compression loses a little more detail, so compressing an already-small file again makes it look blotchy faster.
Resize before you compress when an image will only be shown small. A 4000-pixel-wide photo displayed in a 600-pixel space wastes most of its weight. Our image resizer can set exact dimensions first, then this tool can bring the file under your size limit.
For websites, aim for under 200 KB for large hero images and under 100 KB for most content images. Use WebP or AVIF where your platform supports them, and add width and height attributes in your HTML so the page doesn't jump while images load. If many pages are slow, the problem is usually bigger than one image, and that's where a technical SEO review pays off.
PNG files compress differently. Because PNG is lossless, we reduce the number of colours instead of the quality. That works well for logos and graphics but not for photos. If a photo is saved as PNG, switching it to JPG or WebP will make it far smaller.
Is it safe to upload my files?
Your files are processed on our own server, not sent to any third-party service, and are deleted automatically 30 minutes after processing. We strip location data from photos when converting them, and we never use your files for anything else.
Frequently asked questions
How do I compress an image to exactly 20 KB or 50 KB?
Choose the 20 KB or 50 KB preset (or enter your own number) and click Compress. The tool finds the best quality that fits under that size.
Will my image lose quality?
Some compression is always lossy, but the tool lowers quality only as far as needed and keeps the original dimensions whenever it can.
Which format gives the smallest files?
WebP and AVIF are the smallest. Use JPG when a form or app doesn't accept WebP.
Can I compress PNG images?
Yes. PNGs are reduced to an optimised 256-colour palette, which suits logos and graphics. For photos, convert to JPG or WebP for much smaller files.
Is there a limit on how many images I can compress?
Up to 10 images of 10 MB each per batch. Run another batch whenever you need to.