81 TOOLS.
ONE WEBSITE.

A fast, privacy-first archive of utilities that run entirely in your browser. No tracking, no bloat, no login.

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Text / 13

TEXT/REGEX

Regex Tester

Real-time expression testing with match highlighting.

TEXT/MARKDOWN

Markdown Editor

Live preview Markdown environment.

TEXT/CASE

Case Converter

Switch between camel, snake, kebab, pascal, and title case.

TEXT/DIFF

Diff Checker

Compare two text blocks line by line.

TEXT/STATS

Text Counter

Live character, word, line, sentence, and reading-time statistics.

TEXT/SLUG

Slug Generator

Convert any string into a clean URL-safe slug.

TEXT/CLEAN

Sort & Dedupe Lines

Sort, trim, and remove duplicate lines from any text block.

TEXT/FLIP

Text Reverser

Reverse text by characters, words, or lines.

TEXT/STATS

Word Frequency

Rank the most-used words in any text with a live bar chart.

TEXT/CODE

Morse Code Translator

Translate text to and from International Morse Code instantly.

TEXT/VALIDATE

Email Validator

Validate a list of email addresses and check RFC-style syntax.

TEXT/AUDIO

Text to Speech

Read any text aloud with browser voices, adjustable rate and pitch.

TEXT/UNICODE

Character Map

Click-to-copy special characters, arrows, math, Greek, and currency symbols.

Data / 5

DATA/ENCODE

Base64 Encode

Convert strings to and from Base64 encoding.

DATA/ENCODE

URL Encode

Percent-encode and decode URL components.

DATA/XML

XML Formatter

Pretty-print and indent XML documents client-side.

DATA/ENCODE

HTML Entities

Encode and decode HTML entities like &, <, >.

DATA/ENCODE

File to Base64

Convert any file into Base64 and a ready-to-paste data URL with instant preview for images.

Dev / 15

DEV/FORMAT

JSON Formatter

Prettify, minify, and validate JSON data strings instantly.

DEV/SQL

SQL Editor & Checker

Format SQL and lint for missing WHERE, unmatched quotes, and common mistakes.

DEV/AUTH

JWT Debugger

Decode and inspect JSON Web Token headers and payloads.

DEV/SCHED

Cron Editor

Build and explain crontab expressions.

DEV/DIFF

JSON Diff

Compare two JSON objects and highlight added, removed, and changed keys.

DEV/CSS

CSS Minifier

Minify CSS by stripping whitespace, comments, and redundant characters.

DEV/SEO

Meta Tag Generator

Generate SEO meta, Open Graph, and Twitter Card tags for any page.

DEV/STRING

String Escape

Escape and unescape strings for JS, JSON, and other quoted contexts.

DEV/REF

HTTP Status Codes

Searchable reference for common HTTP status codes and their meanings.

DEV/URL

URL Parser

Break any URL into protocol, host, port, path, query params, and hash.

DEV/REF

Regex Cheatsheet

Searchable reference for regex tokens, quantifiers, groups, lookarounds, and flags.

DEV/NET

IP Subnet Calculator

Compute network, broadcast, host range, and usable IPs from any IPv4 CIDR.

DEV/JSON

JSON Path Query

Query JSON with dot and bracket notation and see the resolved value instantly.

DEV/URL

UTM Link Builder

Build campaign-tracked URLs with utm_source, medium, campaign, term, and content parameters.

DEV/TYPES

JSON to TypeScript

Turn any JSON payload into TypeScript interfaces with nested type inference.

Image / 5

DESIGN/COLOR

Color Picker

HEX/RGB/HSL picker with contrast ratio tool.

DESIGN/PALETTE

Color Scheme Maker

Build and preview palettes: analogous, complementary, triadic, mono, shades.

IMAGE/OPTIMIZE

Image Compressor

Client-side JPEG re-encoding to shrink images.

DESIGN/CSS

CSS Gradient Generator

Design linear and radial CSS gradients with live preview and copy-ready code.

DESIGN/CSS

Box Shadow Generator

Craft box-shadow values with sliders and copy the CSS instantly.

PDF / 1

PDF/MERGE

PDF Merge

Combine multiple PDFs into a single document, client-side.

Crypto / 5

CRYPTO/PWD

Password Gen

Entropy-based passwords with configurable character sets.

CRYPTO/HASH

Hash Generator

Compute SHA-1, SHA-256, SHA-384, SHA-512 hashes.

CRYPTO/LUHN

Credit Card Validator

Check card numbers with the Luhn algorithm and detect the card brand.

CRYPTO/AES

Text Encrypt / Decrypt

AES-256-GCM text encryption with PBKDF2 password derivation, all in-browser.

CRYPTO/AUDIT

Password Strength Checker

Estimate password entropy, character-set coverage, and crack time in real time.

Convert / 9

CONVERT/UNIT

Unit Converter

Convert length, mass, volume, and time.

CONVERT/DATA

JSON to CSV

Flatten JSON arrays into CSV with header detection.

CONVERT/TIME

Timestamp Converter

Convert between Unix timestamps and ISO 8601 dates with relative time.

CONVERT/DATA

YAML ↔ JSON

Convert between YAML and JSON with error reporting.

CONVERT/NUM

Number Base Converter

Convert numbers between binary, octal, decimal, and hex.

CONVERT/DATA

CSV to JSON

Parse CSV rows into structured JSON with header keys.

CONVERT/TIME

Timezone Converter

See any datetime across major world timezones side-by-side.

CONVERT/BIN

Binary ↔ Text

Convert text to binary (8-bit) and back with instant preview.

CONVERT/NUM

Roman Numeral Converter

Convert between Arabic numbers (1–3999) and Roman numerals.

Generators / 6

GEN/ID

UUID Generator

Bulk generate secure v4 universally unique identifiers.

GEN/QR

QR Code Generator

Create high-resolution QR codes for URLs or text.

GEN/TEXT

Lorem Ipsum

Placeholder text generator with paragraph control.

GEN/RANDOM

Random Number

Generate one or many random integers within a custom range.

GEN/RANDOM

Dice Roller

Roll standard tabletop dice (d4–d100) with sum totals.

GEN/TIME

Pomodoro Timer

Focus timer with configurable work and break intervals and cycle counter.

Calculators / 6

CALC/DATE

Age Calculator

Calculate exact age in years, months, and days from a date of birth.

CALC/MATH

Percentage Calculator

Compute percentage of, percentage change, and ratios in one place.

CALC/MONEY

Tip Calculator

Split bills and calculate tips per person with a live slider.

CALC/HEALTH

BMI Calculator

Calculate body mass index from height and weight with category ranges.

CALC/MONEY

Loan / EMI Calculator

Compute EMI, total interest, and total payment for any loan.

CALC/MONEY

Discount Calculator

Compute savings and final price for any percentage discount.

AI / 10

AI/PROMPT

Prompt Library

Curated AI prompt templates plus a role-task-context prompt generator.

AI/TOKENS

AI Token Counter

Estimate GPT, Claude, Gemini, and Llama token counts and context window usage for any text.

AI/PRICING

AI Cost Calculator

Compare LLM API costs across GPT-4o, Claude, Gemini, Llama and more per call and at scale.

AI/PROMPT

AI Prompt Optimizer

Turn a rough idea into a structured role-task-context-format-constraints prompt for any LLM.

AI/SYSTEM

System Prompt Builder

Craft production-ready system prompts for chatbots and agents with rules, tone, and tool schemas.

AI/IMAGE

AI Image Prompt Builder

Assemble structured prompts for Midjourney, DALL·E, Stable Diffusion, and Flux with negative prompts.

AI/TEMPLATE

Prompt Template Filler

Detect {{variables}} in a prompt template and fill them from an auto-generated form.

AI/API

Chat Messages JSON

Build the messages[] payload for OpenAI, Anthropic, and Gemini chat APIs with a visual editor.

AI/REF

LLM Model Comparison

Compare context windows, pricing, modalities and strengths of leading LLMs side-by-side.

AI/COMPRESS

Stopword Remover

Strip English stopwords from text to shrink prompts and cut LLM token costs.

Diagrams / 6

DIAGRAM/MERMAID

Mermaid Diagram Editor

Live Mermaid editor for flowcharts, sequence, class, ER, state, Gantt, pie, and mindmap diagrams. Preview and export SVG.

DIAGRAM/FLOW

Flowchart Builder

Turn a list of steps into a rendered flowchart with decision branches — no drawing required.

DIAGRAM/SEQ

Sequence Diagram Builder

Build UML sequence diagrams from a plain-text list of messages between actors.

DIAGRAM/ER

ER Diagram Builder

Design database entity-relationship diagrams from a simple schema outline.

DIAGRAM/MIND

Mindmap Builder

Turn an indented outline into a rendered mindmap for brainstorms, features, and OKRs.

DIAGRAM/UX

User Journey Map

Chart a user journey with scored steps and actors across each stage of the funnel.

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