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Fast Text Format

Fast Text Format Tools

The ultimate collection of lightning-fast utilities to format, convert, and streamline your workflow.

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Code & Formatting

Base64 to File Decoder

Decode Base64 strings or Data URIs back into downloadable files (images, PDFs, documents, audio) with instant live preview.

Code Beautifier & Minifier

Beautify, validate, and minify your JSON, JavaScript, CSS, and HTML code into clean, readable syntax.

Config Converter (TOML / INI / .env / JSON)

Convert configuration files seamlessly between TOML, INI, Java .properties, .env, YAML, and JSON formats with nested key flattening and unflattening.

CSS Formatter & Minifier

Format, beautify, validate, and minify CSS code with custom indentation.

CSS Visual Generators

Visually generate and export CSS code for Box Shadows, Gradients, Flexbox, and Grid layouts.

CSV to JSON/SQL

Convert CSV data to JSON arrays or SQL INSERT statements.

cURL to Fetch

Easily convert cURL commands into JavaScript Fetch API code.

Docker Run to Compose

Convert docker run CLI commands into clean, production-ready docker-compose.yml configuration files.

GraphQL Explorer & Formatter

Beautify, minify, validate, and inspect GraphQL queries, mutations, subscriptions, and SDL schemas with AST operation & variable analysis.

HTML & XML Formatter

Beautify, format, and minify HTML and XML code with customizable indentation and syntax cleanup.

HTML to JSX

Client-side tool to transform HTML tags/attributes into React-compatible JSX.

HTML to Tailwind CSS

Convert standard inline styles and CSS declarations into Tailwind CSS utility classes with live preview.

JS Obfuscator

Transform readable JavaScript code into unreadable, minified code to protect logic.

JSON Stringify & Parse (.env Ready)

One-click minify and stringify multi-line JSON objects into escaped strings ready for .env files, CLI args, or code literals, or parse escaped strings back into formatted JSON.

JSON to Code

Convert JSON objects into typed models for various languages.

JSON Tree Viewer

Visually inspect, expand, collapse, search, and filter complex JSON payloads with path inspection.

JSONPath & JQ Evaluator

Query, filter, extract, and transform JSON payloads in real-time using standard JSONPath (RFC 9535) or JQ-style expressions with table and visual path views.

Markdown Editor & Previewer

Write, edit, and preview Markdown in real-time with live HTML preview, syntax styling, and HTML export.

Semantic JSON Diff

Compare two JSON documents semantically, ignoring key ordering, formatting, and whitespace differences, with visual change highlighting and RFC 6902 JSON Patch export.

Source Map Viewer

Client-side tool to upload a .map file and de-minify stack traces.

SQL Formatter

Format, beautify, and minify SQL queries across multiple SQL dialects.

String Escape & Unescape

Safely escape (and unescape) quotes, backslashes, and newlines for use in JSON strings, SQL queries, HTML, and Java/C#.

SVG Optimizer

Minify and clean raw SVG code.

SVG to PNG/WEBP

Client-side tool utilizing an HTML canvas to rasterize SVG code or files into downloadable images.

XML Utilities

Format and minify XML strings.

YAML <-> JSON

Instantly convert between YAML and JSON.

Data & Crypto

Generators & Utilities

ASCII Art Generator

Convert text into stylish ASCII art banners, figlet typography, and decorative monospace text.

Barcode Generator

Client-side tool using a canvas to generate linear barcodes (UPC, EAN, Code39) from text.

CHMOD Permissions Calculator

Calculate, convert, and inspect Linux file permissions with visual octal and symbolic modes.

Color Contrast

Check WCAG color contrast accessibility.

Color Converter & Picker

Pick colors and convert between HEX, RGB, HSL, HSV, and CMYK formats with live preview and palette tools.

Cron Expression Builder & Decoder

Build, edit, and decode cron schedules into human-readable descriptions with upcoming execution dates.

EXIF Data Viewer & Stripper

View, inspect, and strip EXIF, camera, and GPS location metadata from JPEG, PNG, and WebP images locally for complete privacy.

Favicon Generator

Convert standard images into universally compatible .ico files and generate standard web app icon sizes.

Image Base64

Convert image files into Base64 Data URI strings and CSS background-image properties.

Image Color Palette Extractor

Drop any image to extract its dominant HEX, RGB, and HSL color palette client-side, with interactive image eyedropper and one-click CSS variables, Tailwind, and JSON export.

Image Compressor

Compress and optimize JPEG, PNG, WEBP, and AVIF images locally in your browser.

Lorem Ipsum Generator

Generate customized dummy placeholder text by paragraphs, sentences, or words for mockups and designs.

Markdown Table Generator

A visual grid editor that allows users to easily add rows/columns and instantly outputs perfectly formatted Markdown table syntax.

Meta Tag & Open Graph Generator

Generate and visually preview SEO meta tags, Twitter Cards, and Facebook Open Graph tags.

Mock Data Generator

Generate hundreds of rows of fake test data (names, emails, addresses, dates, credit cards) and export it as CSV, JSON, or SQL INSERT statements for database testing.

Password Generator

Create strong, secure passwords and passphrases using customizable cryptographic algorithms.

PDF Toolkit

Merge, split, extract, rotate, and reorder PDF pages 100% locally in your browser.

QR Code Generator

Create scalable, customizable, and scannable QR codes from text or URLs with instant download.

Regex Tester & Builder

Test regular expressions with real-time match & capture group highlighting, syntax explanation breakdown, and multi-string test modes.

Robots.txt Generator

Build valid robots.txt rules, crawler directives, and block AI scrapers.

UUID / GUID Generator

Instantly generate universally unique identifiers (UUID/GUID v1, v4, v7) in bulk with custom formatting.

XML Sitemap Generator

Construct valid XML sitemaps with custom URLs, change frequencies, and priorities for search engines.

Finance & Units

Networking

SSL Certificate Inspector

Inspect live SSL/TLS certificates, issuer chains, expiration countdowns, SAN domains, and fingerprints for any domain.

- -

Subject

Common Name (CN) -
Organization (O) -
Country (C) -

Issuer (CA)

Common Name (CN) -
Organization (O) -
Country (C) -

Important Dates

Valid From -
Valid Until -
Public Key -

SHA-256 Fingerprint

Serial Number -
SHA-256 Fingerprint -

Subject Alternative Names (SAN)

View Raw PEM Certificate

How to Use

Enter a domain or hostname (e.g., example.com) and optional port (default 443). Click Inspect to establish a live TLS handshake, analyze certificate validity, days until expiration, Subject Alternative Names (SAN), and download the PEM certificate.

Frequently Asked Questions

What is an SSL / TLS certificate?

An SSL/TLS certificate is a digital credential that binds a cryptographic public key to a domain name and organization, enabling encrypted HTTPS communication and authenticating the server's identity.

What is the difference between SSL and TLS?

SSL (Secure Sockets Layer) is the deprecated predecessor protocol developed by Netscape in the 1990s. TLS (Transport Layer Security) is the modern, secure successor (TLS 1.2 and TLS 1.3).

How does an SSL/TLS handshake work?

The client and server negotiate cryptographic cipher suites, authenticate the server using its certificate, exchange keys via Diffie-Hellman, and establish shared symmetric session keys for encrypted data transfer.

What is a Certificate Authority (CA) and why is it trusted?

A CA is an audited organization (like Let's Encrypt or DigiCert) whose root certificates are pre-installed in operating system and browser trust stores to verify and sign domain certificates.

What are Subject Alternative Names (SANs)?

SANs are extensions in X.509 certificates that specify all additional domain names, subdomains, and IP addresses secured by that single certificate (e.g., example.com and www.example.com).

What causes an SSL certificate invalidity or expiration error?

Common causes include the current date passing the certificate's notAfter expiration date, a domain mismatch with the SAN list, an incomplete intermediate certificate chain, or revocation via CRL/OCSP.

What is the difference between DV, OV, and EV SSL certificates?

Domain Validation (DV) confirms domain control; Organization Validation (OV) verifies the legal business entity; Extended Validation (EV) requires rigorous identity vetting and documentation.

What is a wildcard SSL certificate?

A wildcard certificate contains an asterisk in the domain name (e.g., *.example.com) that secures the primary domain and an unlimited number of first-level subdomains.

What is an SSL certificate chain of trust?

The hierarchical sequence of certificates connecting the server's end-entity certificate through one or more intermediate CA certificates to a trusted root CA certificate in the client's trust store.

Why is TLS 1.3 superior to TLS 1.2?

TLS 1.3 removes obsolete and vulnerable cipher suites, enforces forward secrecy by default, and reduces the handshake latency to a single round-trip (1-RTT), accelerating page load times.

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