Utilities

Quick encode/decode, hashing, timestamp and regex tools — all running locally in your browser, so tokens, hashes and payloads never leave your machine.

Encode / Decode

Convert text to and from Base64, URL-encoding and HTML entities. UTF-8 safe.

Method

Input

Output

Hash generator

Hashes of the text below, computed live in your browser. SHA via the Web Crypto API; MD5 in pure JS.

Input text

MD5

SHA-1

SHA-256

SHA-512

Unix timestamp converter

Convert between Unix epoch and human dates. Seconds and milliseconds are auto-detected.

Epoch → date

Date → epoch

Regex tester

Live JavaScript regular-expression testing — matches and capture groups update as you type.

Pattern

global (g) ignore case (i) multiline (m) dotall (s)

Test string

New to regex or need a refresher? Read the regex guide →

Image Convertor

Convert an SVG or WebP image to a JPEG or PNG at the size you need. The conversion runs in your browser.

Drop an SVG or WebP here or browse

A pasted URL is fetched through our server (to get around browser CORS); uploaded or dropped files never leave your browser.

Format

JPEG PNG

Size (longest edge)

Background

White Black Transparent Custom

JPEG has no transparency — transparent areas are filled with the chosen background. For a transparent result, choose PNG.

Runs in your browser

Almost everything on this page runs entirely client-side — your input is never sent to or stored on a server, so it's safe to decode tokens, hash secrets or paste log snippets without them leaving your machine. The one exception is fetching an image from a URL in the converter: that public link is fetched via our server to get around browser CORS — only the URL and the returned file pass through it, and never your uploaded files.

Handy to know

Base64 URL-safe swaps +/ for -_ and drops padding — the form used in JWTs and URLs.
Epoch is seconds since 1 Jan 1970 UTC; 13-digit values are milliseconds.
Regex here uses the JavaScript engine, so syntax matches what runs in browsers and Node.