We Built the Tool We Wished Existed
TinyImage.Online is a browser-based image compression suite built by web performance engineers who grew tired of watching great websites get slowed down by oversized images — and forced to hand their files to servers they didn't trust.
Why We Built This
Every image optimization tool we tried had one thing in common: it required uploading your files to someone else's server. That's a problem when you're working with client assets, confidential product photos, medical imagery, or anything you'd rather not hand off to an unknown third party.
We asked: what if compression happened entirely in the browser? With modern WebAssembly technology, the answer turned out to be: yes, and it can be just as fast, and just as good as any server-side pipeline.
That realisation became TinyImage.Online — a tool that delivers professional image compression with complete privacy as a non-negotiable default.
Zero Server Uploads
All processing happens in your browser using WebAssembly. Your files never touch our infrastructure.
Industry-Standard Engines
MozJPEG, OxiPNG, and libavif — the same libraries used in Google and Mozilla toolchains.
No Account Required
Full functionality from the first visit. No email, no sign-up, no tracking of your files.
What We Stand For
Four principles that guide every decision we make about the product.
Privacy by Design
Your images never leave your browser. There is no upload, no storage, no server. What you compress stays on your device — always. This is not a feature we added; it is the architectural foundation everything else is built on.
Professional-Grade Results
We use the same compression engines trusted by engineers at Google and Mozilla — MozJPEG, OxiPNG, and libavif — compiled to WebAssembly. You get enterprise-quality output at zero cost.
Free for Everyone
We believe web performance should not be a luxury. TinyImage.Online has no upload caps, no registration wall, no freemium gating. Every feature works for everyone on day one.
Built for Developers
From real-time before/after previews to format conversion and Core Web Vitals guidance, every feature is designed by developers who understand what shipping fast, production-ready images actually requires.
How We Got Here
A brief timeline of TinyImage.Online from idea to platform.
The Problem
While auditing performance for a mid-sized e-commerce platform, our founder noticed that 60% of the page weight came from unoptimised images — and every existing tool required uploading files to a third-party server.
The Prototype
After experimenting with WebAssembly builds of MozJPEG and OxiPNG, we shipped an internal browser-based compressor that processed images without a single byte leaving the device. The results were stunning.
Public Launch
TinyImage.Online launched publicly with support for JPEG, PNG, WebP, and AVIF. In the first month, users compressed over 2 million images — all processed entirely on their own hardware.
Growing the Platform
We added batch processing, format conversion, a website performance scanner, social image resizer, and a blog to help developers make sense of modern image formats and best practices.
Built by Developers, for Developers
TinyImage.Online is built and maintained by a small, focused team of web performance engineers and open-source contributors.
Priyank Jain
Founder & Web Performance Engineer
Priyank is a web performance engineer with over a decade of experience building browser-based developer tools. He specialises in WebAssembly, Core Web Vitals, and image format optimisation. TinyImage.Online was born from his frustration with tools that demand server uploads for what should be a fundamentally local operation.
We also work with a community of open-source contributors and web performance specialists who help shape the product. Get in touch if you'd like to contribute.
By the Numbers
How the Technology Works
A brief look at the engineering behind browser-based, privacy-first image compression.
Traditional image compression tools work by sending your file to a remote server, running a compression algorithm, and sending the result back. This means your image — however private — is transmitted over the internet and temporarily stored on infrastructure you don't control.
TinyImage.Online takes a different approach. Using WebAssembly (WASM), we compile native compression libraries — MozJPEG for JPEG, OxiPNG for PNG, and libavif for AVIF — directly into bytecode that runs inside your browser. When you drag an image onto our compressor, the compression happens locally on your CPU. The result is a compressed file delivered directly to your downloads folder, with no data ever leaving your device.
This approach is not a compromise. WASM-compiled MozJPEG produces the same output quality as running MozJPEG natively on a server. The only difference is where the computation happens — and for your files, that difference matters enormously.