Upload forms and applications
Make images small enough for portals that reject large files, including 100 KB, 200 KB and 1 MB limits.
Compress to a target size100% in-browser · files never uploaded
Free Online Image Compressor
Compress JPG, PNG, WebP, AVIF and HEIC images in seconds. imgkilo runs in your browser, so your files are never uploaded.
- No upload
- Compress to KB
- Resize & convert
- Free forever
Drop images here or click to upload
PNG, JPG, WebP, GIF, AVIF, HEIC — up to 50MB each
Compress, resize and convert images online.
Dedicated tools for the searches people actually make: compress JPEG, compress PNG, convert to WebP, HEIC to JPG and compress image to exact KB sizes.
- Popular
Compress JPEG
Shrink JPG photos for websites, email, and forms.
- Lossless
Compress PNG
Reduce PNG size while preserving sharp graphics.
- iPhone
HEIC to JPG
Turn iPhone photos into shareable JPG files.
- Modern
Convert to WebP
Create modern images for faster page loads.
- Exact KB
Compress to size
Hit 100 KB, 200 KB, or 1 MB automatically.
- Precise
Resize image
Set exact pixels or fit within max dimensions.
- Screenshots
PNG to JPG
Cut PNG screenshots and photos by 70-90%.
- Modern
JPG to WebP
Modernize JPG photos for faster page loads.
- Modern
PNG to WebP
Smaller files with transparency preserved.
- Compat
WebP to JPG
Restore universal compatibility for older apps.
- Lossless
WebP to PNG
Get lossless PNG with transparency from WebP.
- Vector
SVG to PNG
Rasterize SVG at any pixel size you need.
- Min size
Increase image size
Pad a too-small file up to a minimum KB.
- ID photo
Passport size photo
Resize and compress to common ID photo specs.
- New
Passport photo maker
Remove the background, crop to size, fix lighting.
- Photo
Change background
Swap any background for white, a colour, or transparent.
Make images fit where they need to go.
imgkilo keeps common image workflows direct and private, from upload-form limits to faster website assets and shareable phone photos.
Websites and product pages
Reduce image weight before publishing so pages load faster without sending source files to a third-party server.
Convert images to WebPiPhone photos and sharing
Turn HEIC photos into JPG files that work in email, Windows, Android apps and older upload systems.
Convert HEIC to JPGQuestions before you compress.
Short answers for the things people care about before dropping private images into an online tool.
Is imgkilo free to use?
Yes. imgkilo is a free online image compressor with no signup, watermark or ads.
Do my images get uploaded?
No. Compression, resizing and conversion run in your browser, so your images stay on your device.
Which image formats are supported?
You can work with common image formats including JPG, PNG, WebP, AVIF and HEIC.
A private image compressor for real files.
Not another upload form.
Many online image compressors send photos to a remote server before processing. imgkilo keeps compression, resizing and conversion in your browser, which is better for private photos, client assets and everyday documents.
Nothing leaves your device
All work happens in your browser via Canvas and WebAssembly.
Faster than upload tools
No round-trip to a server. Results are ready in under a second.
No login, no ads, no limits
Drop 1 file or 100. No watermarks, no signup wall.
Modern formats included
WebP, AVIF and HEIC are first-class, not paywalled extras.