SparkpondYour pixels stay in this tab.
Compress an image for email
Sparkpond selects a compatible format, limits the long edge and reports whether the 500 KB target is reachable.
- Add images
- Adjust
- Download
Drop images here
or choose files from this device
JPEG, PNG, WebP, AVIF, HEIC/HEIF · batch size adapts to your deviceTry a sample:
- ✓ No upload
- ✓ No account
- ✓ Works locally
Weight, dimensions and format are verified.
No account, queue or upload.
From image to download in three steps
- 1 Add
Choose one or more images.
- 2 Adjust
Adjust only the settings for this tool.
- 3 Download
Get the validated result.
Guide · EN
How it works
Add one or more images.
Review the preset already applied.
Compare the real result, then download.
Formats and settings
- The preset remains editable in the unified editor.
- Advanced adjustments can be combined into one output.
A concrete example
Sparkpond selects a compatible format, limits the long edge and reports whether the 500 KB target is reachable.
Know before you start
- A byte target is an attempted upper limit, not an exact-byte promise.
- Offline codec support depends on a first successful load.
FAQ · 3
Frequently asked questions
Are my images uploaded?
No. Processing runs locally in a Worker.
Can I process multiple files?
Yes. The queue adapts its throughput to the device.
Is the result verified?
Yes. The final format, dimensions, and file signature are checked before download.