Utility tools
Text, data, file and code utilities. Everything runs on your device — your data is never sent anywhere.
Generators
QR Code Generator
Make a QR code for a link, text, Wi-Fi or contact.
QR & Barcode Reader
Scan a QR code or barcode from your camera or an image.
Barcode Generator
Create Code 128, EAN, UPC, Code 39 and more as PNG or SVG.
Text & data
JSON Formatter & Validator
Format, minify, sort and validate JSON with clear errors.
XML to JSON
Convert XML to JSON, keeping attributes if you want.
JSON to XML
Convert JSON to well-formed XML.
YAML to JSON
Convert YAML to JSON using a safe parser.
JSON to YAML
Convert JSON to readable YAML.
Markdown to HTML
Convert Markdown to sanitised HTML with a live preview.
HTML to Markdown
Convert HTML to clean Markdown after sanitising it.
Base64 Encoder & Decoder
Encode or decode text and files as Base64.
Files
File Checksum (SHA-256)
Calculate SHA-256, SHA-1, SHA-384 or SHA-512 of any file and compare.
File Type Inspector
Check what a file really is — and whether its extension matches.
ZIP Creator & Extractor
Create ZIP archives or safely extract them, with zip-bomb limits.
Frequently asked questions
Is my data sent to a server?
No. JSON, XML, YAML, Base64, checksums and ZIP operations all run in your browser tab.
Is Base64 a way to hide data?
No. Base64 is an encoding, not encryption — anyone can decode it.
How safe is the ZIP extractor?
It limits the number of entries, the total expanded size and compression ratios, rejects unsafe paths, never extracts nested archives automatically and never runs extracted files.