Compress an image to 50KB

Get any image under 50KB. Target-size mode searches for the highest quality that still fits your 50KB limit, right in your browser.

Privacy-first: every image is processed locally in your browser. Nothing is uploaded, stored or transmitted to any server.

What fits in 50 kilobytes

50KB is avatar-and-thumbnail territory: forum profile pictures, e-government photo thumbnails, email signature images and listing thumbs. A well-encoded photo fits comfortably at up to ~800–1000px; trying to squeeze a full-resolution phone photo under 50KB without resizing first is where visible damage starts.

Resize first, then let the search work

For best results, scale the image down to roughly its display size (the resizer is one click away), then let target-size mode find the highest quality that fits under 50KB automatically. The before/after comparison shows exactly what the budget costs. Everything runs in your browser — relevant, since tight-limit uploads are often ID-adjacent documents.

Frequently asked questions

Does my image get uploaded?
No. All compression happens locally in your browser using the Canvas API. Your files never leave your device and are never sent to a server.
Does compression reduce quality?
Lossy formats (JPG, WebP, AVIF) trade a little quality for much smaller files, and the quality slider lets you find the right balance. PNG is lossless, so it stays pixel-perfect.
Which formats are supported?
You can compress JPG, PNG and WebP. You can also convert a PNG photo to WebP during compression for much smaller files.
Can I compress to a specific file size?
Yes. Switch to “Target size” mode and PixelVault searches for the highest quality that fits under your chosen KB limit.
Can I compress multiple images at once?
Yes. Drop in as many images as you like and download them individually or together as a single ZIP file.