Batch compression
Process multiple images at once with shared quality and output settings.
Free · Local processing · No sign-up
Make every imagesmaller and easier to use
Compress, convert, resize, and crop in one simple workflow. Your images are processed on your device instead of being uploaded.
- No account
- Batch processing
- Files stay local
Image workspace
Select files here, support dragging files and folders
Free online image tool, supports JPG/JPEG/PNG/WEBP/GIF/SVG/AVIF/HEIC/HEIF formats and local processing
Tip: You can also paste image with Ctrl+V (Cmd+V), or drag and drop images here
A practical image tool for work, ecommerce, websites, social media, and everyday file sharing.
FEATURES
The image tasks you actually need
DuckOK puts common image operations into one straightforward workflow, so you can work without installing software or jumping between tools.
Format conversion
Convert between JPG, PNG, WebP and AVIF while handling transparency.
Resize images
Resize by width, height, short edge, long edge or a defined ratio.
Crop images
Crop by ratio or exact dimensions for covers, product images and social posts.
Before / after
Compare the result directly and find the right balance between quality and size.
Local processing
Images are processed in your browser instead of being uploaded to a server.
DUCKOK PRO
A free core tool,with a bigger workflow ahead
DuckOK keeps the core image tools free. Pro will be designed for high-volume users and teams with faster batch workflows, automation, and professional features.
- Advanced batch workflows
- More image tools
- Task and processing history
- API and team features
Pro features are being introduced gradually
DUCKOK PROSOON
For people who process images every day.
WORKFLOW
Process images in three steps
- 1
Add images
Choose files or folders, or simply drop and paste images.
- 2
Set options
Choose quality, format, dimensions, and crop behavior.
- 3
Download
Review the result, then download one image or the complete batch.
PRIVACY BY DESIGN
Your images do not need to be uploaded first
DuckOK's web compressor runs in your browser using technologies such as Web Workers and WebAssembly. This reduces upload waiting and avoids keeping image copies on our servers.
- Local processing
- No account
- No upload queue
- Open source
0 files uploadedBrowser · Web Worker · WebAssembly
FAQ
Frequently asked questions
Does DuckOK upload my images?
The core web workflow processes images locally in your browser. Under normal use, your images are not uploaded to DuckOK's servers.
Can I compress many images at once?
Yes. DuckOK supports batch files and, in compatible browsers, folders. The practical limit depends on your device memory and browser.
Which image formats are supported?
The core tool supports JPEG, PNG, WebP, GIF, SVG and AVIF, with local HEIC/HEIF input handling.
Will DuckOK become paid?
The core compressor is intended to remain free. Pro will add capabilities for high-volume users; features and pricing will be announced when they launch.
Make your images lighter today
No account. No installation. Just open DuckOK and start.