Are these online tools really free to use?

Yes, every tool on HandyTools is completely free with no registration, no sign-up, and no usage limits. You can format JSON, compress images, convert units and use all other tools as often as you like.

Do you upload my files to a server?

No. All processing happens locally in your browser using JavaScript. Your images, JSON data and text never leave your device, so you can use the tools safely with sensitive content.

How do I compress an image to 100KB?

Open the image compressor, upload your image, then move the quality slider down until the estimated file size reaches your target. You can switch between JPEG, WebP and PNG output formats to find the best balance of quality and size.

Which browsers and devices are supported?

HandyTools works on all modern browsers including Chrome, Firefox, Safari and Edge, on both desktop and mobile. The responsive design adapts to any screen size, and no installation or app download is required.

HandyTools

100% free · no uploads · runs in your browser Blog About Contact

Simple tools for busy people

Format JSON, compress images, convert units and more — everything runs locally in your browser. Your data never leaves your device.

JSON Formatter & Validator

Beautify, minify and validate JSON with instant error feedback.

Input

Output

Frequently Asked Questions

Quick answers to the most common questions about our free online tools.

Simple tools for busy people

JSON Formatter & Validator

Image Compressor

Unit Converter

Text Case Converter

Word & Character Counter

Base64 Encoder / Decoder

UUID Generator

Frequently Asked Questions