Milan Niroula

Tools

Small utilities for a quick conversion, a local image, or a token you would rather not paste into someone else’s server.

Runs locally in your browser. Nothing is uploaded.

Photos, JSON, passwords, and tokens stay on this device. The HEIC decoder is an extra script from this site, and it loads only when you open a HEIC file.

  1. Time zone converter

    Convert a wall-clock time between IANA time zones.

  2. Image compressor and HEIC to JPG

    Compress JPEG, PNG, and WebP, and convert HEIC to JPG locally.

  3. JSON formatter and validator

    Format, validate, minify, and convert JSON.

  4. Word and character counter

    Count words and characters against common length limits.

  5. Age calculator

    Calculate exact age and the next birthday.

  6. QR code generator

    Create a static QR code for text, a URL, Wi-Fi, or a vCard.

  7. Percentage calculator

    Calculate percentages and percentiles.

  8. JWT decoder

    Decode a JWT header and payload without verifying it.

  9. Cron expression explainer

    Explain a cron expression and list the next runs.

  10. Regex tester

    Test a JavaScript regular expression and its groups.

  11. Password, UUID, and hash generator

    Generate a password, a UUID, or a SHA hash locally.

  12. Unit converter

    Convert bytes, bandwidth, and latency.