Free users can currently upload up to 20 images at once, with a maximum size of 5 MB per image. Image conversion is even more restricted, with only a few free conversions available.
For occasional image optimization, those limits may not matter. But when you’re preparing dozens—or hundreds—of images for a website, repeatedly splitting files into smaller batches quickly becomes frustrating.
A different approach: process the images on your own computer
Instead of uploading every image to a remote processing server, PlugStudio’s WebP & AVIF Compressor performs the conversion directly inside your browser.
Your images stay on your device during compression. Because your computer is doing the processing, the tool does not need to impose an arbitrary daily conversion quota or a fixed 20-file batch limit.
The practical limit is simply what your browser and computer can comfortably process.
PlugStudio vs TinyPNG
| Feature | PlugStudio | TinyPNG Free |
|---|---|---|
| Images per batch | No artificial batch limit* | 20 |
| Maximum image size | No server-enforced cap* | 5 MB |
| WebP export | Yes | Yes |
| AVIF export | Yes, when supported by browser | Yes |
| Local processing | Yes | No, upload workflow |
| Quality control | Adjustable | Automatic |
| Download batch as ZIP | Yes | Yes |
| Account required | No | No |
*Actual capacity depends on available browser memory and the performance of the device.
H2: When does an unlimited compressor make sense?
If you only need to compress three holiday photos, almost any online compressor will do.
The difference becomes noticeable when you’re optimizing a WordPress media library, preparing hundreds of product photos for WooCommerce, building a landing page, exporting assets from Figma or processing an entire client project.
That’s where removing arbitrary batch limits becomes useful.
CTA
Have more than 20 images waiting to be optimized? Skip the batch limits and process them directly in your browser.
Is there a free TinyPNG alternative without a 20-image limit?
Yes. PlugStudio processes images locally in your browser instead of sending them to a compression server, so it does not impose a fixed 20-image batch limit.
Does PlugStudio have a 5 MB image limit?
There is no server-enforced 5 MB upload limit because compression happens locally. Very large batches can still be limited by your device’s available memory.