100% LOCAL-FIRST · RUNS IN YOUR BROWSER

01 / TOOLKIT

Small tools for the work between projects.

Browser-side utilities for everyday development, data handling, security inspection, and quick experiments. No accounts, no servers, and no tracking.

Case study Tech stack Selected work GitHub

STATUS LOCAL-FIRST

Inputs stay on your machine. Nothing is sent to a remote server.

STYLE BLACK / WHITE

Built with the same monochrome design as the rest of the site.

FIND TOOL⌘K

Threat Intel Payload Defense cURL Studio URL Studio SPF / DMARC User-Agent Defang Hash ID Password UUID JSON JWT Regex Calculator CIDR Ports Diff Units File hash

02 / INDEX

Pick a tool. Get in. Get out.

01 Generators 02 Calculator 03 Encoding 04 Security & Forensics 05 Network & Web 06 Units 07 Diff Comparison 08 File Hash 09 Text Analysis 10 Developer 11 Editor

03 / GENERATORS

Generate something useful.

Small deterministic tools for credentials, identifiers and visual primitives.

01PASSWORD & ENTROPY

Password generator & entropy meter

Generate random passwords and check bit entropy against NIST SP 800-63B guidelines.

Length 20

Uppercase Lowercase Numbers Symbols

Entropy: 0 bits (Empty) Crack time: Instant

Min 12 Chars

Mixed Pool (A-z, 0-9, #)

No Sequences (123, abc)

No Repetitions (aaa)

02IDENTIFIERS

UUID generator

Generate RFC 4122-style UUID v4 identifiers using crypto.randomUUID().

Count

03COLOR

Palette generator

Create a compact grayscale or hue-based palette from one source color.

Base color Mode

04HASH

Hash text

Hash text with Web Crypto. MD5 is intentionally omitted from the browser-native path.

Algorithm

04 / CALCULATOR

Scientific & arithmetic evaluator.

Fast calculations with arithmetic, trigonometry, logarithms, and powers evaluated locally.

EXPRESSION ● LOCAL EVAL

RESULT 0

KEYBOARD SHORTCUTS

Enter Evaluate expression
Esc Clear input (AC)
Backspace Delete last character
+ − * / Basic operators
^ Power function (xʸ)

SUPPORTED OPERATIONS

Trigonometric functions (sin, cos, tan), square root (sqrt), base-10/natural logs (log, ln), powers (x^y), and mathematical constant π.

05 / ENCODING

Inspect, encode, decode.

Useful for APIs, URLs, payloads, structured data and quick debugging.

05JSON

JSON formatter

06DATA URI & ASSETS

Base64 & data URI generator

Convert text, SVG, or small files into Data URIs ready to embed in HTML or CSS. Inspect MIME types and copy code directly.

Load Local File

Asset preview will appear here

07BASE64

Base64 encoder / decoder

08URL

URL encoder / decoder

09HTML

HTML entity encoder

04 / SECURITY & FORENSICS

Read data before you act on it.

Inspection-first helpers for authorized research, debugging and forensic workflows.

09THREAT HUNTING / REAL-TIME

IOC extractor (threat intel)

Paste logs, emails, or notes to extract and deduplicate IP addresses, domains, URLs, hashes, and CVEs right in your browser.

Paste text above to extract indicators of compromise in real-time.

10DEFENSE / AUDITING

Web payload & injection tester

Test input strings or query parameters against common injection patterns like SQLi, XSS, path traversal, and command injection.

09OSINT / DEFANG

IOC Defanger & Refanger

Defang indicators of compromise (URLs, domains, IPv4, IPv6, email addresses) for safe sharing, or reverse defanged artifacts back to raw form.

Operation

http(s) → hxxp(s) Dots → [.]

10SECURITY / POSTURE

HTTP security headers checker

Paste HTTP response headers from curl or browser DevTools to see which security headers are configured and what's missing.

Security Posture Grade 5 of 6 key protections configured

Security Header

Status

Details & Advice

11FORENSICS / HEX

Hex / ASCII / Binary Inspector

Convert and inspect byte representations with authentic 16-column forensic hex dump, offsets, and ASCII translation.

Input Mode

00000000  Enter text or hex above and click Inspect

12CRYPTOGRAPHY / DFIR

Hash type identifier

Analyze hash length, format, and character encoding to identify potential cryptographic algorithms.

Enter a hash above to identify its type.

13JWT / DEBUGGING

JWT decoder

Decode JWT header and payload locally. This does not verify the signature.

HEADER

—

PAYLOAD

—

Decoding is not verification.

14WEB

HTTP header inspector

Fetch response headers from a URL when the target permits browser CORS access.

No request yet.

CORS restrictions are enforced by the browser.

15REGEX

Regex tester

Pattern Flags

Enter a pattern and text.

16NETWORK / DATA

IP / CIDR helper

Inspect IPv4 addresses and common CIDR ranges without sending the input anywhere.

IPv4 / CIDR

—

05 / NETWORK & WEB

Inspect network, web & protocols.

Local-first HTTP request synthesis, RFC 3986 URL deconstruction, DNS email security validation, and protocol triage.

21HTTP / REQUEST CONVERSION

cURL to Fetch & Python converter

Build an API request or paste a curl command to generate equivalent JavaScript fetch() and Python requests code.

Method Endpoint URL

Headers (one per line: Header: Value) Request Body (JSON / text)

22RFC 3986 / PRIVACY

URL parser & tracker stripper

Break down URLs into parts, strip out marketing tracking parameters (UTM, Facebook, Google), and check for suspicious redirects.

Protocol

—

Hostname

—

Port

—

Path

—

Hash Fragment

—

Parameter Key	Value	Action
No query parameters

23DNS / EMAIL SECURITY

SPF & DMARC policy checker

Check or generate SPF and DMARC DNS TXT records to prevent email spoofing.

Target Domain SPF Record (v=spf1)

SPF Lookups: 2 / 10 Valid RFC 7208

DMARC Policy (v=DMARC1)

Enforcement: Reject (Strict) High Defense

24CLIENT / BOTS

User-Agent parser & bot identifier

Inspect browser engines and operating systems, or identify known search crawlers and scrapers.

Browser

—

OS / Arch

—

Engine

—

Classification

—

15PORTS

Common ports reference

Quick search for standard network service ports and triage notes.

Port	Service	Note

17HTTP

Status reference

Quick lookup for standard HTTP status codes.

—

18CONTRAST

Contrast checker

Calculate accessibility contrast ratio.

Foreground Background

21.00:1 — AAA for normal text

08 / CONVERT

Convert units and timestamps.

Length, data, temperature, and Unix epoch conversions with timezone and relative time breakdown.

18 UNIT CONVERTER

Physical units

Category From unit To unit Value

1 m = 3.28084 ft

19 TIMESTAMP CONVERTER

Epoch & relative time converter

Auto-detects Unix seconds or milliseconds and shows UTC, local time, and relative delta.

UTC ISO 8601 —

LOCAL TIME —

RELATIVE HUMAN DELTA —

Convert Date String or ISO to Epoch:

—

09 / COMPARE

See what changed.

A compact line-based diff for code, notes, JSON and configuration files with exportable patch support.

20 DIFF ENGINE

BEFORE (ORIGINAL)

AFTER (MODIFIED)

—

10 / FILES

Hash a file locally.

Select a file and calculate a SHA-256, SHA-384 or SHA-512 digest in the browser.

Select file Algorithm

The file bytes are read in this tab; no upload is performed by this page.

11 / TEXT

Measure and transform text.

Quick analysis for documentation, notes, logs and content cleanup.

13ANALYSIS

Text analyzer

0Characters

0Words

0Sentences

0Paragraphs

0Min read

0Lines

14CASE / FORMAT

Text transformer

12 / DEVELOPER

Developer utilities.

Small helpers that save the repetitive five-minute jobs.

15TIME

Unix timestamp

—

16DATA

CSV → JSON

17MARKDOWN

Markdown preview

Preview appears here.

18URL

URL parser

—

19JSON PATH

JSON path lookup

—

20RANDOM

Random picker

—

13 / EDITOR

A focused browser editor.

Keep the editor as an optional workspace instead of making it the homepage.

OUTPUT

Ready.

JavaScript runs locally in the browser. Python and other languages are editor-only in this lightweight version.