10 Free TinyPNG Alternatives for Image Compression
TinyPNG is the first name most people think of for image compression, but it has real limitations: a 20-file batch cap on the web tool, uploads required for every compression, and a paid API once you exceed free monthly credits. If you've hit those walls, you're looking for TinyPNG alternatives that are free — and ideally ones that don't require uploading your images at all.
This guide ranks ten alternatives, with a focus on browser-based tools that process images locally for better privacy and no arbitrary limits.
Why People Look for TinyPNG Alternatives
TinyPNG works well, but the friction adds up:
- 20-file limit per batch on the web interface
- Upload required — your images go to TinyPNG's servers
- 5 MB per file cap on the free web tool
- Paid API once you exceed the free monthly quota
- No control over compression level — you get whatever TinyPNG decides
For anyone compressing more than a handful of images, or working with files they'd rather not upload, these limits become a recurring annoyance.
10 Free TinyPNG Alternatives Ranked
1. Keynou Image Compressor — Best Overall
Keynou's image compressor runs entirely in your browser. No upload, no 20-file cap, no 5 MB limit. You control the quality slider and see results instantly. Because processing is client-side, you can compress an entire folder of images without waiting on a server queue or worrying about monthly credits.
It handles JPG, PNG, and WebP, and pairs naturally with the PNG to WebP converter when you want modern format output alongside compression.
2. Squoosh
Squoosh is Google's open-source browser-based compressor. It supports multiple codecs (MozJPEG, WebP, AVIF, OxiPNG) and shows a side-by-side before/after view. No upload, no limits. The interface is more technical than TinyPNG, which is a plus or minus depending on your needs.
3. Compressor.io
Compressor.io handles JPG, PNG, GIF, and SVG. It's upload-based, so privacy-conscious users should note that. The free tier has a 10 MB file limit. Output quality is strong, comparable to TinyPNG.
4. Optimizilla
Optimizilla lets you adjust quality per image with a live preview and supports batch upload of up to 20 images. Upload-based, with a clean interface. The batch limit matches TinyPNG's, so it's not a clear upgrade on that front.
5. ImageOptim (Desktop)
ImageOptim is a Mac desktop app rather than a web tool. It strips metadata and applies lossless compression. No upload, no limits, but Mac-only — Windows and Linux users need alternatives.
6. Trimage
Trimage is a cross-platform desktop compressor using optipng, pngcrush, and jpegoptim. Open-source and local, but the interface is minimal and development has slowed.
7. Kraken.io
Kraken.io offers strong compression with a free tier up to 1 MB per file — smaller than TinyPNG's 5 MB. Upload-based, with paid plans for larger files. Good algorithm, restrictive free tier.
8. Ezgif
Ezgif handles GIF, JPG, and PNG with a compression tool alongside its broader editing suite. Upload-based with a 50 MB cap. Useful if you also need GIF optimization in the same session.
9. PNGGauntlet
PNGGauntlet is a Windows desktop tool that combines PNGOUT, OptiPNG, and Deflopt for lossless PNG compression. Local processing, no limits, but PNG-only and Windows-focused.
10. ShortPixel
ShortPixel's online tool compresses JPG, PNG, and WebP with a free tier of up to 50 images per month. Upload-based, with a paid API beyond that. The monthly cap makes it a weaker free option than the browser-based alternatives.
What to Look for in a TinyPNG Alternative
The best alternative depends on your priorities, but the criteria that matter most are:
- No upload — your images stay on your device
- No batch limits — compress as many files as you need in one session
- Quality control — adjust compression level rather than accepting a fixed output
- Format support — JPG, PNG, and WebP at minimum; AVIF is a bonus
- No signup — open the tool and start compressing
Browser-based tools like Keynou and Squoosh hit all five. Cloud-based tools typically miss the first and second.
Batch Compression Without Limits
TinyPNG's 20-file cap is the most common reason people switch. If you're compressing a product catalog, a blog image set, or a folder of screenshots, 20 files is barely a start.
A browser-based compressor removes that ceiling. You load images one after another (or in batches limited only by your browser's memory), adjust quality per image if needed, and download. No queue, no waiting, no counter ticking down.
For format conversion alongside compression, Keynou's image converter handles the format swap locally too — convert a folder of PNGs to WebP and compress in the same workflow without uploading.
The Recommendation
For most users, the best free TinyPNG alternative is a browser-based compressor that removes the upload step and the batch cap. Keynou's image compressor is built for exactly this: local processing, no limits, no account, no watermark.
If you want a deeper comparison of the broader converter landscape, see our free online file converters comparison. For the privacy and speed reasons behind choosing browser-based tools, our browser-based vs cloud converters guide covers the architecture in detail.
External resources: the WebP specification explains why WebP outperforms PNG for web images, and Google's Lighthouse image audit documents the performance impact of properly compressed images.
