100% OFFLINE DESKTOP APP

Shrink your images.
Never upload them to anyone's server.

Name: UnalSoft Media Optimizer
Author: UNALSOFT

Convert your JPGs, PNGs and videos to web-ready WebP/MP4, all on your own computer. Your files never leave your device.

No internet needed Portable .exe, no install 14 languages

WHAT ONLINE CONVERTERS WON'T TELL YOU

Online tools upload your files to a stranger's server. This one doesn't.

TinyPNG, iLoveIMG, CloudConvert and the rest do the work in the cloud, which means your client images travel across the internet. UnalSoft Media Optimizer does everything on your machine.

Your files stay with you

Images and videos never leave your computer. Client photos, product shots and private content never reach a server you don't control.

online tool: uploads to a server

No internet, no limits

No upload waits, no file-size caps, no daily quotas. Process 200 images back to back, at the full speed of your disk.

online tool: size & quota limits

GDPR-friendly by design

Because no data is ever collected or transmitted, there's no personal data to process in the first place. The cleanest path for agencies and businesses.

online tool: 3rd-party server

IN THE BOX

Every optimization a website needs, in a single window

WebP conversionJPG / PNG / WebP → optimized WebP, sRGB + smart compression

Video optimizationMP4 / MOV / AVI / MKV → web-ready H.264, with or without audio

Batch processingDrag & drop, live progress, one-click output folder

14 languagesFully offline interface

WHO MADE THIS

Built by a web agency, a team that fights page speed every day.

UnalSoft Media Optimizer grew out of the tool UNALSOFT uses to speed up client sites. We give it away free because we know exactly what fast web is worth.

LET'S BE HONEST

The free version has a speed limit.

In the free version you process 10 files at a time and image conversion is a little slower (10 images ≈ 40 sec). Unlimited files and full speed are in Pro. WebP conversion itself is open in every version, never locked.

INDEPENDENT RESEARCH

We didn't make this up. We measured it.

We independently scanned 27 e-commerce sites across 6 sectors. The average page weighs 19 MB, and most of that weight comes from images. Image weight is the biggest, and easiest to fix, problem on most sites. That's exactly what this tool is for.

19 MB

average e-commerce page (mobile)

40%

of page weight comes from images

78 MB

heaviest single page we measured

Explore the Image Weight Index → Open method & raw data · Turkish market, 1st edition

PRO

Lift the limits: unlimited files, full speed.

The same offline tool; Pro only removes the 10-file limit and the speed cap. Monthly, annual and lifetime plans are available.

Unlimited batch processing
Full speed, no limits
Monthly · Annual · Lifetime options

Download Free for Windows Plans and pricing are shown inside the app.

Free version, free forever, WebP conversion, video optimization, 14 languages. No credit card.

The team behind this tool can speed up your site too

We bring the same speed to your whole site: fast-loading websites and e-commerce stores built with WebP media, technical SEO and Core Web Vitals.

Discover UNALSOFT

FREQUENTLY ASKED

Good questions

Is this a free WebP converter? +

Yes. UnalSoft Media Optimizer is a free WebP converter. It turns your JPG and PNG images into optimized WebP in one click, and also converts videos to web-ready MP4. Unlike online WebP converters, it runs 100% offline; your files are never uploaded to any server. The free version is free forever.

Where do my files go? +

Nowhere. All processing happens on your computer, offline. The app never connects to a server, uploads a file, or sends telemetry. Your images never leave your device.

Which operating system do I need? +

Windows. It runs as a portable .exe with no installation required. Download it, double-click, and use it.

What's in the free version? +

Everything essential, including WebP conversion, video optimization and 14 languages. The limits: 10 files at a time and speed-limited image conversion. Upgrade to Pro for unlimited files and full speed.

How does the Pro license work? +

When you buy, you receive a personal license key by email. You paste it into the app and activate it. Verification is done entirely offline, and your key is never sent to any server.

What happens when my subscription ends? +

The app automatically returns to the free version; none of your files or settings are lost. You can renew anytime or switch to the Lifetime license.

Shrink your images.Never upload them to anyone's server.