100% Client-Side & Secure

LazyTools Collection

A comprehensive collection of secure, browser-based utilities and developer tools. Everything runs locally in your browser, keeping your data entirely offline and safe.

Converters

Markdown Editor & Exporter

Write, preview, and export Markdown to PDF, HTML, and PNG.

Markdown to DOCX Converter

Convert Markdown to styled Word documents (.docx) format.

Convert HTML code to PDF, Markdown, or plain text format.

Unix Timestamp Converter

Convert Unix timestamps to readable date and time.

Number Base Converter

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

Roman Numeral Converter

Bidirectional converter between decimal and Roman numerals.

cURL Command to Code

Convert cURL commands to Fetch, Axios, Python, and more.

Generate typed models from JSON in many languages.

JSON / YAML / XML / CSV / TOML Converter

Convert data between JSON, YAML, XML, CSV, and TOML.

Convert lists to JSON, CSV, SQL IN clauses, and custom formats.

Encoders & Decoders

Base64 Encoder/Decoder

Encode text or files into Base64 and decode them.

Hex ↔ String Converter

Convert text to hex representations and vice-versa.

HTML Encoder/Decoder

Encode special characters to HTML entities and decode.

Text Escape/Unescape

Escape or unescape special characters for programming.

Punycode Converter

Translate domain names to and from Punycode format.

URL Encoder/Decoder

Encode and decode URL parameters and queries safely.

URL Parser & Builder

Deconstruct, edit, and rebuild complex URL query parameters.

Decode, parse, and inspect JSON Web Tokens (JWT).

Morse Code & Binary Converter

Convert text to Morse code or binary, with audio playback.

Generators

Generate random UUID v4, time-based v7, or custom IDs.

Snowflake ID Generator & Decoder

Generate and decode customizable 64-bit Snowflake IDs.

Lorem Ipsum Generator

Generate custom placeholder lorem ipsum text blocks.

Mock Data Generator

Generate mock user lists, addresses, and custom schemas.

QR Code Generator

Generate custom QR codes with PNG and SVG export options.

Password Generator

Generate secure, customizable random passwords.

Formatters & Validators

JSON Formatter & Validator

Format, validate, and query JSON with an interactive tree.

YAML Formatter & Validator

Format and validate YAML data with an interactive tree.

XML Formatter & Validator

Format and validate XML markup with an interactive tree.

SQL Formatter & Validator

Format and validate SQL queries for multiple dialects.

Text Tools

Markdown Editor & Exporter

Write, preview, and export Markdown to PDF, HTML, and PNG.

Convert HTML code to PDF, Markdown, or plain text format.

Convert text between camelCase, snake_case, and more.

Count words, characters, lines, and read time for text.

Find and Replace

Search and replace text using standard or regex terms.

Test and debug regular expressions with highlighting.

Text Diff Visualizer

Compare texts using side-by-side or inline diff views.

CV / Resume ATS Analyzer

Parse PDF resumes and score their ATS search compliance.

Convert lists to JSON, CSV, SQL IN clauses, and custom formats.

Utilities

Convert text to spoken audio using browser speech synthesis.

Transcribe voice or microphone input into text in real-time.

Mock Data Generator

Generate mock user lists, addresses, and custom schemas.

Cron Expression Parser

Parse, validate, and generate standard cron expressions.

GZip Compressor / Decompressor

Compress and decompress text using native browser GZip.

Security

Generate secure MD5, SHA-1, SHA-256, and SHA-512 hashes.

Password Hasher

Hash and verify passwords with Bcrypt or Argon2.

AES Encryption/Decryption

Encrypt and decrypt text using secure AES-256-GCM.

RSA Key Pair Generator

Generate secure client-side RSA public/private key pairs.

Certificate Decoder

Inspect and decode X.509 certificates and fingerprints.

Networking

IP Address Lookup

Look up geolocation and network details for any IP.

DNS Records Lookup

Query DNS records like A, AAAA, MX, TXT, and CNAME.

Subnet Calculator

Calculate network subnets, CIDR ranges, and IP masks.

Scan common network ports and services for connectivity.

Design

Pick colors, adjust color channels, and get CSS codes.

Color Contrast Checker

Check color contrast ratios for WCAG A11y compliance.

Glassmorphism Generator

Design and preview glassmorphism CSS backdrop effects.

CSS Box Shadow Generator

Design, layer, and preview custom CSS box shadows.

SVG Path Editor/Optimizer

Edit, visualize, and optimize vector SVG path data.

Calculators

Timezone Converter

Convert date and time values across global timezones.

Calculate age details, total days, and next birthday.

Date Difference Calculator

Calculate the exact duration and days between two dates.

Roman Numeral Converter

Bidirectional converter between decimal and Roman numerals.

Percentage Calculator

Calculate percentage values, changes, and ratios.

Convert between length, weight, data, and other units.

Calculate Body Mass Index using metric or US units.

Currency Converter

Convert currencies using live exchange rates.

CSS Clamp Calculator

Generate responsive CSS clamp() functions for layouts.

PDF Tools

Convert PDFs to images, Word, or create from files.

Edit, merge, split, compress, and watermark PDF files.

Markdown Editor & Exporter

Write, preview, and export Markdown to PDF, HTML, and PNG.

Convert HTML code to PDF, Markdown, or plain text format.

Image Tools

Image Converter & Editor

Convert formats, resize, crop, compress, and filter images.

SVG to PNG Converter

Rasterize SVG vector code or files into PNG images.

EXIF Viewer & Remover

Inspect and strip metadata from images for privacy.

Color Palette Extractor

Extract dominant color palettes from any uploaded image.

Color Blindness Simulator

Simulate color blindness filters on uploaded images.