Are there good alternatives to TinyPNG?

TinyPNG is one of the most popular ways to shrink PNG and JPEG files, and for good reason — it's simple, it produces small files, and a lot of people have used it happily for years. If it already fits your workflow, there's nothing wrong with sticking with it.

But it's a fair question to ask whether there's an alternative, especially if you've run into one of a few common friction points: you'd rather your images never leave your computer, you regularly optimize a whole folder at once, or you'd prefer to pay a single time instead of on a recurring plan. This post is an honest look at how Image Optimizer approaches those cases differently.

Where your images are processed

The biggest practical difference is where the work happens.

Most online compressors, TinyPNG included, work by uploading your images to a server, optimizing them there, and sending the smaller files back. That's a perfectly normal way to build a web tool, and it works.

Image Optimizer takes a different path: your images are optimized on your own device and are never uploaded anywhere. There's no upload step at all, so there's nothing sitting on someone else's server and nothing to delete afterwards. If you work with client photos, internal screenshots, or anything you'd simply rather not send over the internet, that difference matters.

Working with a whole folder

If you optimize one image now and then, almost any tool is fine. The difference shows up when you have a batch.

Image Optimizer is built around processing many images at once: drop in a folder's worth of files, apply the same settings across all of them, and export the results together as a single .zip. You can also rename the whole batch with a consistent prefix and numbering, which is handy when the optimized files are headed straight into a website or a CMS.

That batch-first workflow — bulk optimize, bulk rename, one .zip — is the part most worth trying if you've been optimizing images one at a time.

Formats for modern sites

For shrinking files on the web today, the format usually matters more than squeezing the last few percent out of an old one.

Image Optimizer converts to WebP and AVIF (as well as JPEG and PNG). These next-gen formats are typically much smaller than a traditional JPEG or PNG at the same visual quality, and they're exactly what tools like Google PageSpeed are asking for when they suggest "serve images in next-gen formats." WebP is a safe default across browsers; AVIF can go smaller still.

Free vs. paid

The Free plan is genuinely usable on its own: it never uploads your images, there's no sign-up, and there's no file-size limit on what you optimize.

Pro is a single one-time payment — not a subscription — and it unlocks the heavier workflow: unlimited batch size, AVIF output, .zip export, bulk rename, and presets that sync across your devices. If you've been hesitant about adding another monthly bill, paying once tends to be an easier decision.

So, is it worth switching?

If TinyPNG already does everything you need, you don't have to change anything — it's a good tool.

But if any of these sound like you, Image Optimizer is worth a try:

• You'd prefer your images stay on your device and never get uploaded.
• You regularly optimize whole folders and want bulk rename plus .zip export.
• You want WebP or AVIF to fix PageSpeed's next-gen format warning.
• You'd rather pay once than subscribe.

The tool is right on the home page — drop in a few images and see the before-and-after for yourself. No upload, no sign-up required.

Cover photo by Abdelrahman Harfoosh on Unsplash.