I Built a 100% Free Image Compressor & Resizer That Never Saves Your Files to Disk

Mudasir ahmed — Sat, 25 Jul 2026 22:04:21 +0000

Hey DEV Community! 👋

As a Full-Stack Developer with 5+ years of experience building web architecture, I constantly look for ways to optimize Core Web Vitals and page speeds. Large images are usually the biggest culprit behind slow loading times.

While there are amazing image optimization tools out there, I got frustrated with two things:

Constant pop-ups to upgrade to premium after a few files.
The uncertainty of where my images are being uploaded and stored.

To solve this for my own client workflows, I built a lightweight side-utility: Preflight Image Compressor & Resizer.

🛠️ How it Works & Why It’s Different:

Strict Privacy (Held in Memory): Unlike typical online converters, your files are never written to a server disk. The image is held in temporary memory during the request cycle and streamed directly back to you as a download.
Two-in-One Processing: You can alter the pixel dimensions (resize) and change the optimization weight (compress) in a single action.
No Friction: No signups, no emails, no watermarks, and 100% free.

💡 Compression Tip:

For standard photography, aiming for 80-90% quality compression is the sweet spot. It drops the payload size significantly with almost zero human-visible degradation. If you are dealing with heavy PNG files, try converting them to WebP first before compressing.

I intend to keep this as a clean, ad-free standalone web utility. I would love to hear your feedback on the compression speeds, processing time, or any features you think I should add next!

Check it out here: Preflight Print Image Compressor

DEV Community: Mudasir ahmed

I Built a 100% Free Image Compressor & Resizer That Never Saves Your Files to Disk

🛠️ How it Works & Why It’s Different:

💡 Compression Tip: