IMAGE TOOLS
Image Compressor
Reduce large image files for faster sharing and uploads while keeping a useful balance between quality and size.
Quick answer: Choose one or more JPG, PNG or WebP images, adjust quality and maximum dimensions, then download each optimized copy or one ZIP.
Use Image Compressor ↓Loading the tool…
How to use Image Compressor
- Add your imagesDrop or choose one or more JPG, PNG or WebP files. They are read by your browser and never uploaded.
- Balance quality and sizeStart around 75–80% quality and cap the longest side at the size you actually need (for example 1600 px for a blog image). Smaller dimensions save far more than quality loss does. Need a hard limit for a form or portal? Enter a target size in KB and the tool searches for the best quality that fits.
- Compare and downloadOpen “Compare before and after” and drag the slider to check detail, then download single files or one ZIP. If a file is already well optimized, the tool keeps your original instead of returning a bigger one.
About this tool
Images are usually the heaviest part of a web page and the reason an email bounces. Compress them to a quality you choose or to a size limit in KB, compare before and after, and keep the original if the file was already lean.
Common uses: Useful for email attachments, marketplace listings, website uploads and social posts where a smaller file loads faster but still looks sharp.
Practical example: For a product photo, start with a quality around 80–85%, check the preview at 100% zoom, and keep the original until the exported file is approved.
Important limitation: Compression is a trade-off: lower quality or dimensions usually produces a smaller file. Transparent PNGs may become JPGs only when you select that output format.
Images are decoded and re-encoded in your browser. Nothing is uploaded, and the original files are not changed. Read the privacy information.
How it works
Your browser decodes each image onto a canvas, scales it to the maximum dimensions you set, and re-encodes it at your chosen quality. Lossy formats (JPG, WebP) discard detail the eye barely notices; PNG stays lossless.
Real-world uses
- Shrinking product photos so an online store page loads faster
- Getting a photo under an upload limit on a job application or government form
- Preparing a folder of blog images before publishing
Compressing images without ruining them
Resizing does more than quality. A 4000-pixel photo displayed at 800 pixels carries over twenty times more pixels than it needs. Set a maximum width or height that matches where the image will be shown, then adjust quality. Around 75 to 85 percent is a sensible range for photographs.
Use the target size box when a form says “under 200 KB”. The tool searches for the highest quality that still fits, and scales the dimensions down if quality alone cannot get there. The result lists the size it reached. If a file is already smaller than the target, your original is kept instead of re-compressing it.
Format matters as well. JPG and WebP shrink photos well. PNG is lossless, so photographic PNGs shrink little; converting them to WebP or JPG usually saves far more. Transparent images need PNG or WebP, since JPG has no transparency.
Tips for better results
- Photos compress best as JPG or WebP; screenshots and logos with flat color usually stay sharper as PNG.
- Resize first, then compress. A 4000 px photo shown at 800 px wastes most of its bytes.
- Keep your originals. Re-compressing an already compressed JPG compounds visible artifacts.
Frequently asked questions
Will compression reduce image quality?
Some reduction is possible, but the preview and quality control let you choose the balance. Keep the original for archival use.
Which image formats are supported?
The workflow accepts common JPG, PNG and WebP images and can process multiple files in one session.
Are my files uploaded?
Images are decoded and re-encoded in your browser. Nothing is uploaded, and the original files are not changed.
What file size should I aim for on a website?
For photos in articles, 100–200 KB is a practical target; hero images can go to 300 KB. Smaller files help page speed and Core Web Vitals.
Why did my PNG barely shrink?
PNG is lossless, so photographic PNGs stay large. Converting a photo to WebP or JPG usually cuts it by 60–90%; use the Image Converter for that.
How do I compress an image to under 100 KB or 200 KB?
Enter the target size in KB, for example 100, and compress. The tool reduces quality and, if needed, dimensions until it fits. If it cannot reach the target, it tells you what size it managed.
Why did my compressed image get no smaller?
The file may already be well optimized, or it is a lossless PNG. The tool keeps your original in that case. Try WebP or JPG output, or reduce the maximum width.
Can I compress many images at once?
Yes. Add a batch and download the results as separate files or one ZIP.