Free Image Compressor — Compress Image to 100KB or Any Size
Compress JPG, PNG and WebP images online for free, or shrink a photo to an exact file size such as 100KB, 50KB or 20KB. Pick a size, add your image and download a file that fits — no signup, no watermark, nothing to install.
How to Compress an Image to 100KB
- Choose 100 KB under “Compress to size”, or type any limit into Custom.
- Add your image — JPG, PNG, WebP, HEIC (iPhone), GIF, BMP, TIFF or AVIF, up to 25MB.
- Press Compress, then Download. The file comes out at or under your limit whenever that can be done without shrinking the image below 200px.
Why a 100KB Image Doesn’t Have to Look Bad
A typical phone photo is 3–5MB at 12 megapixels. Forcing that down to 100KB with the quality setting alone leaves visible blocks and smearing. This compressor works the other way round: it finds the highest quality that fits your limit and reduces the dimensions only when quality alone would ruin the picture. In testing, a 12-megapixel photo came out at 99KB and 1,725×1,294px — sharp enough for any upload form.
Common Image Size Limits
| Target size | Where it usually comes up |
|---|---|
| 20KB – 50KB | Signature scans, passport-style photos and photo-ID fields on application forms |
| 100KB | Many exam, job-portal and government form uploads |
| 200KB – 500KB | Profile pictures, marketplace listings and website images |
| Under 1MB | Email attachments and chat apps |
More Than a Size Limit
- Compress by quality when there is no hard limit — around 80% looks the same as the original for most photos.
- Convert formats to JPEG, PNG, WebP or AVIF while you compress.
- Resize to a maximum width or height, or use presets for social media, email, websites, thumbnails and print.
- Batch compress several images with one click.
Frequently Asked Questions
Is this image compressor really free?
Yes, completely free with no hidden costs, trials, or watermarks. Compress unlimited images without creating an account.
How do I compress an image to 100KB?
Choose 100 KB under "Compress to size", add your image and press Compress. Quality is kept as high as possible and the image is resized only if it has to be, so the file comes out at or under 100KB.
Can I reduce a photo to 50KB or 20KB?
Yes. Pick 50 KB or 20 KB, or type any size into Custom. Very small targets also reduce the image dimensions, which is normal for signature and ID-photo uploads.
How much can I reduce file size?
Typical savings range from 50-90%. A 5MB JPEG at 100% quality can often be compressed to 500KB-1MB at 80% quality with no visible quality loss.
Will compressing images reduce quality?
At 80-85% quality, the human eye typically cannot detect any difference. Our compression grade system helps you understand the balance between file size and quality.
What happens to my images?
They are compressed on our server, and the compressed copy is kept for about an hour so your download link works, then deleted automatically. They are not used for anything else. For documents you need to keep strictly private, an offline tool is the safer choice.
Can I compress multiple images at once?
Yes. Add as many images as you like and use Compress All; each one gets the same size or quality setting.
What image formats are supported?
Upload JPEG, PNG, WebP, HEIC (iPhone photos), GIF, BMP, TIFF or AVIF. Download as JPEG, PNG, WebP or AVIF.
Does image compression help SEO?
Yes. Google uses page speed as a ranking factor. Compressed images improve Largest Contentful Paint (LCP) and overall page speed.