// 08 TOOLS · v1.0
Developer tools,
in your browser .
A small set of fast, private utilities. Everything runs locally in your browser — your data never leaves the page.
/* MANIFESTO */
- → Runs 100% in your browser
- → Zero uploads, zero tracking
- → Open source, MIT licensed
- → Bilingual (EN / ES)
$ ls ./tools | wc -l
8
Tools
8 / 8
01 B64
Base64 — text
Encode and decode UTF-8 text to and from Base64.
→ /base64
02 IMG
Image ⇄ Base64
Convert an image to a Base64 data URL and back.
→ /base64-image
03 QR↓
QR reader
Decode a QR code from an uploaded image.
→ /qr-read
04 QR↑
QR generator
Generate a QR code for any text or URL.
→ /qr-generate
05 { }
JSON viewer
Validate, format and explore JSON as a collapsible tree.
→ /json
06 XLS
JSON → Excel
Convert a JSON array of objects into an .xlsx file.
→ /json-excel
07 AES
AES encrypt / decrypt
Encrypt or decrypt text with AES and a passphrase.
→ /aes
08 JWT
JWT decoder
Inspect a JWT — header, payload and expiration — without verifying.
→ /jwt