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Browse the full catalog →JSON Formatter
Format and validate JSON data. Paste or enter data to inspect, convert, or format the result.
Word Counter
Count words, characters, sentences, and paragraphs. Enter text and options to review a result you can copy.
BMI Calculator
Calculate your Body Mass Index. Enter the required values to calculate your result.
Image Compressor
Compress JPG, PNG, or WebP images toward a specific file-size limit such as 10 KB, 100 KB, or 200 KB. Preview the result and actual size before downloading.
Random Number Generator
Generate random numbers within any range. Open the tool to generate or check a result.
Online Ruler
A calibrated on-screen ruler for measurements. Run the browser-based check and follow its prompts to review the result.
Reaction Speed Tester
Test how fast you react to visual stimuli. Follow the prompts to complete the browser-based task and review your result.
QR Code Generator
Generate QR codes for URLs, text, and more. Adjust the available options and preview the result as you build.