How I Built a Privacy-Friendly Image Converter That Runs Entirely in the Browser

WaseverinLabs — Thu, 23 Jul 2026 06:31:59 +0000

I recently launched my first side project: WASEVERIN Image Converter.

It is a lightweight online image converter that processes images entirely inside the browser.

You can try it here:

https://image.waseverin.com

Why I built it

Image conversion is a simple problem, but many existing tools require users to:

Upload images to a remote server
Create an account
Wait for server-side processing
Accept watermarks or usage limits

I wanted to build something simpler.

The goal was to let users open the website, choose an image, convert it, and download the result without installing software or uploading private files.

Privacy-first processing

The most important decision was to process images locally in the browser.

That means:

Images are not uploaded to a server
No account is required
Files are not stored
The conversion starts immediately on the user's device

For personal photos, documents, screenshots, and other sensitive images, local processing provides a better privacy experience.

Supported formats

The first version supports several common image formats:

JPG
PNG
WebP
HEIC
GIF
SVG
BMP
TIFF

The current limit is 10 MB or 40 megapixels per image.

I intentionally kept the first version focused. My main goal was to complete the full product process from idea to launch instead of endlessly adding features before anyone used it.

From idea to launch

This project helped me complete the entire workflow for an independent web product:

Define a small and clear MVP
Build the core conversion experience
Test different image formats
Deploy the website with Cloudflare Pages
Configure a custom domain
Set up Google Search Console
Submit a sitemap and get the homepage indexed
Start sharing the product publicly

The website is now live and already indexed by Google.

What I learned

The biggest lesson was that shipping matters more than endless polishing.

As developers, it is easy to keep improving layouts, animations, architecture, and small interactions based only on our own assumptions.

But without real users, many of those improvements are guesses.

Now that the first version is online, my next goal is to collect real feedback and understand:

Which formats people use most often
Whether the conversion flow is clear
Which features are actually missing
Whether users value local, private processing

What's next

Possible future improvements include:

More conversion combinations
Batch image conversion
Better mobile support
Additional format-specific options
Dedicated pages for common conversions such as HEIC to JPG or PNG to WebP

But I do not want to build everything at once.

I would rather learn from actual usage and improve the product based on real needs.

Feedback welcome

I would love to hear your thoughts:

Which image formats do you convert most often?
Is browser-only processing important to you?
What feature would make this tool more useful?

You can try the tool here: