Image Compressor is a free TinyPNG alternative with no signup and a bigger free tier: drop in a JPG, PNG, WebP, or AVIF and get a smaller file back at up to 25 MB per image and 30 images a batch. TinyPNG's free tier stops at 5 MB a file and 20 images. This one is five times the file size and half again the batch, with nothing to sign up for.
The demo image on this site went from 497 KB to 214 KB as WebP at the default quality of 80, a 56.9 percent cut with nothing you can see gone. If PNG specifically is what brought you here, the PNG guide covers what compression actually does to a PNG file underneath.
What TinyPNG caps on the free tier
TinyPNG's free tier stops at 5 MB per file and 20 images before it asks for more; this tool goes to 25 MB per image and 30 images a batch with no signup either way. That is the whole reason most people land on this page: they hit a wall, not a quality problem. Here is the head to head on the free tier.
| Free tier | TinyPNG | Image Compressor |
|---|---|---|
| Max file size | 5 MB | 25 MB |
| Images per batch | 20 | 30 |
| Signup to use it | No | No |
| Output formats | PNG, JPG, WebP | JPG, PNG, WebP, AVIF |
TinyPNG earns its reputation. It is simple, it has been around for years, and its Photoshop plugin and API are baked into a lot of workflows. If your files are all under 5 MB and PNG is all you need, it does the job and you do not need this page. The gap opens the moment your files are bigger, your batches are longer, or you want a format TinyPNG does not output. That is where the numbers above start to matter.
The 5 MB wall, and where it stops you
The 5 MB limit bites on ordinary work: a batch of product photos for a shop listing, a folder of screenshots for a deck, a transparent PNG logo a CMS keeps rejecting for size. None of that is unusual. It is just bigger than a 5 MB, 20 image free tier allows, and that is usually the moment someone goes looking for an alternative.
Say you have 47 photos for a new product listing. On a 20 image tier that is three separate uploads, 20 and 20 and a last batch only 7 deep, and you are tracking which files landed in which round. At 30 a batch it is two uploads, 30 and then 17, plain math and fewer trips back to the same folder to find what did not make the cut. Nothing here caps how many times you repeat that, so a heavy day of listings does not run you into a paywall.
More than a PNG compressor
TinyPNG's name says PNG, but most upload forms do not care what format you started with, only what comes out the other end. This tool compresses and converts JPG, PNG, WebP, and AVIF in one drop, so a PNG that needs to shrink further can leave as a WebP instead of staying lossless, or a JPEG can come back as AVIF for a page that needs every byte gone.
WebP typically runs 25 to 35 percent smaller than an equivalent JPEG, and AVIF often lands near half the size of JPEG at the cost of a slower encode. If you only ever squeeze PNGs, a PNG only tool is fine. If you want to pick the output format that actually fits the target, that choice lives here. More on when each format is the right call is in the guide to WebP and AVIF.
What happens to your file
PNG is lossless, so shrinking one further means converting it, not turning a quality slider down. JPEG, WebP, and AVIF are lossy: at the default quality of 80, detail a screen cannot show anyway gets dropped, and the two versions look identical side by side at normal zoom. The engine is our own, and what it does to your file is stated plainly rather than left a black box.
Every file also has its EXIF data stripped by default, the hidden metadata a camera or phone writes into the file including GPS coordinates, camera model, and timestamp. None of it sits around afterward. Files dropped into the browser tool are deleted within an hour on a sweep that runs every 15 minutes, there is no public bucket, and the only way to reach a file before the sweep is a signed link that expires in 15 minutes. Nothing you upload is used to train a model or looked at by a person. Full pricing detail is on the pricing page.
Switching your API calls over
The API is what a lot of sites actually use, not the web page, and that is a different move than swapping the tool you reach for by hand. This site has a REST API too: get a key from the dashboard, point your existing upload code at it, and jobs run on a queue off the request thread so a bulk job does not block whatever else your server is doing.
The pricing is flat. Pro is 12 dollars a month for 10,000 images, files up to 50 MB, and batches of 100, whether you call the API once or ten thousand times, so you are not recalculating a per call cost every time volume changes. Re-running the same image at a different quality or format inside one session never counts as a second image, on the API or in the browser, so testing settings before you commit costs nothing extra. If your stack is already wired into a mature plugin ecosystem elsewhere, weigh that against the switch honestly; if you just need a flat rate endpoint that does more formats, the API reference has the request format.