PixelTokb

Overview

PixelTokb is a web-based image compression tool that reduces static JPEG, PNG, and WebP files to a user-specified byte target. All processing happens locally in the browser—images are never uploaded to any server. ## Core Capabilities - **Precise Size Control**: Offers preset targets from 10 KB to 5 MB, plus custom values in KB, KiB, MB, or MiB. The actual byte count is verified against the target before download. - **Output Format Selection**: Export as JPEG, WebP, PNG, or Auto (preserves the alpha channel). When choosing JPEG, you can set a background color for transparent areas. - **Dimension Options**: Check "Keep dimensions" to retain the original pixel size. If unchecked, the tool will downscale the image when adjusting encoding quality alone cannot meet the target. - **Result Preview**: After compression, the final file size is displayed first; download only after confirmation. ## Formats & Compression Strategies - **JPEG**: Reduces file size by adjusting quality, then downscales pixels if necessary. Ideal for photos with broad compatibility. - **WebP**: Uses a strategy similar to JPEG. Best for websites and apps that support WebP. - **PNG**: Uses lossless encoding, reducing size only by changing pixel dimensions. Suitable for screenshots, logos, or graphics requiring transparency. ## How to Use 1. Drag and drop or select an image up to 20 MB. 2. Choose the target size, output format, and other options. 3. Click compress, verify the result, and download. This tool is perfect for scenarios where images must stay within strict file size limits, such as form uploads, email attachments, or preparing website assets.

Q&A

Are my images uploaded to a server?AI-generated

No. PixelTokb processes everything locally in your browser. Your images never leave your device.

Which image formats are supported?AI-generated

It supports input and output of static JPEG, PNG, and WebP files.

How do I choose the output format?AI-generated

Choose JPEG for photos and maximum compatibility; WebP if your site supports it; PNG when you need transparency or are working with screenshots and logos.

Why is it harder to compress PNG files to very small sizes?AI-generated

PNG uses lossless encoding and preserves transparency, so its size can only be reduced by changing pixel dimensions. For photos, JPEG or WebP usually works better.

Will a photo compressed to 50 KB still look good?AI-generated

It depends on the original dimensions and detail level. The tool adjusts encoding quality first, and only downscales pixels if allowed and the target still isn't met.

Can I set a custom target size?AI-generated

Yes. In addition to the presets, you can enter a custom value in KB, KiB, MB, or MiB.

Is there a file size limit for uploads?AI-generated

Image files up to 20 MB are supported.