Comparison
A free TinyPNG alternative that never uploads your image
Our image compressor draws your picture onto an HTML canvas and re-encodes it there, inside your browser tab. The file is never uploaded. There is no batch limit, no account, no counter, and no cost.
Here is the part most comparison pages would hide: on pure output quality, TinyPNG will usually beat us. Their whole product is a tuned compression engine, and ours is the encoder that happens to be built into your browser. If the smallest possible file at a given quality is what you are optimising for, they win, and we are not going to pretend otherwise.
What this page argues is narrower. Your photo does not leave the machine, there is no 20-image batch cap, and a file larger than 5 MB is not a problem.
Competitor details were read from their own public pages on 2026-07-31. Prices and free-tier limits change often — check theirs before you decide.
| What matters | BrowseryTools | TinyPNG |
|---|---|---|
| Where your image is processed | On a canvas in your browser tab. The image is decoded, redrawn and re-encoded locally and is never uploaded.Edge: BrowseryTools | Uploaded to their servers. They state that only you have access to the images you upload and that they are retained for a maximum of 48 hours, after which they are permanently deleted. |
| PNG compression | Barely helps, and the file can come out larger. We redraw from raw pixels with no knowledge of the original's palette or filter choices, so an indexed PNG comes back as full RGBA. That is also why PNG is not offered in target-size mode. | This is precisely their core technique: they describe using quantization to combine similar colours, turning 24-bit PNG files into much smaller 8-bit indexed colour images, and they claim reductions of up to 80%.Edge: TinyPNG |
| JPEG compression | The browser's built-in encoder, which is a blunt instrument next to a dedicated one. A tool built on MozJPEG will typically reach a smaller file at the same visual quality. | Their own tuned lossy pipeline, applied server-side, with the metadata stripping they describe as removing unnecessary metadata.Edge: TinyPNG |
| Formats | No AVIF at all, in or out. And if you pick an output format your browser cannot encode, the tool quietly writes a PNG under the wrong file extension. | Their developer API handles AVIF, WebP, JPEG and PNG, and can compress, resize and convert in the same request.Edge: TinyPNG |
| Metadata and colour profiles | Every mode redraws the image on a canvas, which discards all metadata: EXIF, GPS coordinates, camera settings, ICC colour profiles and XMP. Usually that is a privacy bonus. Occasionally it is a problem — a wide-gamut photo can shift colour once its profile is gone, and you lose the capture date. | They describe removing unnecessary metadata as part of compression, and the API exposes resize and convert options in the same call.Depends on the job |
| How much you can put through it | One image at a time, with a 25 MB ceiling, no batch and no ZIP. Encoding runs on the main thread, so a large image briefly freezes the page. | The free web tool takes up to 20 images at a maximum of 5 MB each per batch. The API gives 500 free compressions a month with no payment method required, then charges per compression.Depends on the job |
| Automation and pipelines | None. There is no API, no CLI and no plugin. Every compression needs a person with a browser open. | A developer API with official client libraries for Ruby, PHP, Node.js, Python, Java and .NET, plus a WordPress plugin and a Figma plugin.Edge: TinyPNG |
| Price | Free, with no account, no counter and no per-image charge.Edge: BrowseryTools | The web tool is free within the batch limits. The API is 500 free compressions a month, then charged per compression on a sliding scale (read from their pricing page on the date shown above). |
Where TinyPNG is genuinely better
- PNG quantization, which is the entire reason TinyPNG exists and something we do not do at all. They collapse a 24-bit PNG to an 8-bit indexed palette. We hand raw pixels to the browser encoder, which knows nothing about the original palette, so an indexed PNG comes back as full RGBA and can end up bigger than it started. If the job is shrinking a PNG, they win outright and it is not close.
- JPEG encoder quality. A MozJPEG-class encoder reaches a smaller file at the same perceived quality than the canvas encoder we are stuck with. For production assets where the last few percent matter, a dedicated encoder or a build-time optimiser is the correct tool and we are not it.
- AVIF and WebP output through their API. We have no AVIF support in either direction, and our format conversion silently falls back to PNG under the wrong extension if the browser cannot encode what you asked for.
- It fits into a pipeline. Official client libraries in six languages, a WordPress plugin and a Figma plugin mean images get optimised as part of a build or a CMS, unattended, forever. We require a human, a browser and one image at a time.
- Compress, resize and convert in a single API request, applied consistently across an entire asset library rather than by hand.
- 500 free API compressions a month with no payment method required — a free tier that is actually usable for automation, which is a category we do not compete in.
Where our tools fall short
- We use the browser's built-in encoder, which is a blunt instrument next to a dedicated one. A tool built on MozJPEG or oxipng will typically reach a smaller file at the same visual quality. For production assets where the last few percent matter, use a build-time optimiser instead.
- PNG barely benefits and can come out larger. The image is redrawn from raw pixels with no knowledge of the original's palette or filter choices, so an indexed PNG returns as full RGBA. To genuinely shrink a PNG, resize it or convert it to WebP or JPEG.
- Every mode redraws the image onto a canvas, which discards all metadata: EXIF, GPS coordinates, camera settings, ICC colour profiles and XMP. Usually that is a privacy bonus, occasionally a problem — a wide-gamut photo can shift colour once its profile is gone.
- One image at a time: no batch, no ZIP, a 25 MB ceiling, and no AVIF for either input or output. Encoding runs on the main thread, so a large image briefly freezes the page — and if you pick an output format your browser cannot encode, it quietly writes a PNG under the wrong file extension.
Which one should you use?
Use ours when the picture is one you would rather not upload — a screenshot with a customer's data in it, an ID photo, a medical scan — or when it is bigger than 5 MB, or when you just need one image under a form's upload limit right now and do not want to think about batches or credits.
Use TinyPNG when file size is the actual goal. PNG in particular: their quantization is the right technique and ours is not a technique at all. And if this is a website's asset pipeline rather than a one-off, use their API or a build-time optimiser like MozJPEG, oxipng or Sharp. That is not a close call.
One honest caveat about us that cuts both ways: we strip every scrap of metadata, including the ICC profile. That is excellent if you are removing GPS coordinates before posting a photo, and bad if you are handling a wide-gamut image whose colour you care about.
The tools this compares
Frequently asked questions
Is there a free alternative to TinyPNG that doesn't upload my images?
Yes. Our image compressor runs on a canvas inside your browser tab, so the file is never sent anywhere. There is no account, no batch cap and no per-image charge. The trade-off is output quality: TinyPNG's engine will usually produce a smaller file at the same visual quality.
Which one produces the smaller file?
Usually TinyPNG, and for PNG specifically it is not close. They quantize a 24-bit PNG down to an 8-bit indexed palette; we redraw raw pixels through the browser's encoder, which can return an indexed PNG as full RGBA and make it bigger. On JPEG the gap is smaller but still theirs.
Do you have a file-size or batch limit?
There is a 25 MB ceiling per image and we process one image at a time. TinyPNG's free web tool takes up to 20 images at a maximum of 5 MB each per batch, so for a single large file we have more headroom and for a folder of small ones they do.
Does compressing an image here remove its EXIF data?
Yes, all of it — EXIF, GPS, camera settings, ICC colour profile and XMP — because the image is redrawn on a canvas. That is a privacy win if you are stripping location data, and a genuine loss if you needed the colour profile or the capture date.
Do you have an API?
No. If you need image optimisation inside a build, a CMS or a deployment pipeline, use TinyPNG's developer API or a build-time optimiser. We have nothing to offer there.
Are you affiliated with TinyPNG?
No. This is an independent comparison written from their own publicly published pages on the date shown above. We are not affiliated with, sponsored by, or endorsed by them.
Other comparisons
Sources
TinyPNG is a trademark of its owner. This is an independent comparison. We are not affiliated with, sponsored by, or endorsed by them.