JSON Tools
Format, diff, validate — stop wrestling with broken JSON
Text Tools
Diff, convert case, and clean messy text in seconds
Base64 Tools
Encode files or decode Base64 — drag and drop
URL Encode / Decode
Fix mangled URLs with one click
HTML Entity Encode / Decode
Make special characters HTML-safe instantly
cURL Converter
Paste cURL, get fetch/Axios/Python code
Number Base Converter
Binary to hex and everything between — all bases at once
CSS Unit Converter
px to rem and back — with your real viewport size
Color Picker
Pick colors and build harmonious palettes
Markdown Preview
Write Markdown, see the result live