Quick answer
TinyPNG uploads your images to its servers and says it keeps them for a maximum of 48 hours; its free tier handles up to 20 images per upload at up to 5 MB each. FreeImageKit's Compress Image runs in your browser, so nothing is uploaded, and it accepts batches of JPG, PNG and WebP with no fixed per-file cap beyond your device's memory. Choose TinyPNG for its API and plugins, and FreeImageKit for private, on-device compression.
| Feature | TinyPNG | FreeImageKit |
|---|---|---|
| Where images are processed | On TinyPNG's servers; retained for a maximum of 48 hours | In your browser; nothing is uploaded |
| Free limits | Up to 20 images per upload, 5 MB each | No fixed cap; limited by your device's memory |
| Formats | JPEG XL, AVIF, WebP, JPG, PNG and APNG | JPG, PNG and WebP in; JPG, PNG, WebP and more out |
| For developers | API and plugins | No API; use the browser tools or workflows |
| Account | Web Pro and Web Ultra subscriptions for heavier use | No account; free with no watermark |
Choose TinyPNG if
- You want to compress images automatically from code or a CMS plugin.
- You compress many images regularly and want a service that does the work off your device.
- You want AVIF or JPEG XL output from the same service.
Choose FreeImageKit if
- The images are private and should not be uploaded, even temporarily.
- You need a result under a specific size, such as 100 KB or 500 KB.
- You want batches without per-upload or per-file limits.
Frequently asked questions
Is FreeImageKit a free alternative to TinyPNG?
For compressing JPG, PNG and WebP in a browser, yes. It is free, runs on your device and supports batches and target sizes. TinyPNG offers an API and plugins that FreeImageKit does not.
Does TinyPNG upload my images?
Yes. TinyPNG states that images are uploaded to its servers and retained for a maximum of 48 hours. FreeImageKit compresses in your browser and never uploads them.
How do I compress an image to exactly 100 KB?
Use FreeImageKit's Compress Image to Target Size, or the Compress Images Under 100 KB workflow. They search for the highest quality that fits your limit.
Try it
Sources
Competitor facts were checked on from the public pages above. Limits, prices and features change, so confirm on TinyPNG's own site. FreeImageKit is not affiliated with TinyPNG; product names belong to their owners.
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