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Complete Sitemap & Free Online Tool Directory

Explore our complete index of browser-based utilities, category hubs, articles, and documentation.

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Total Tools
170

Offline-first utilities

Categories
22

Specialized hubs

Blog Articles
26

Guides & tutorials

Legal & Info
8

Company policies

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Online Tools

170 browser-based, privacy-first developer and utility tools

170 Tools

Developer Tools

38 tools

Format, encode and decode

Browse Category
JSON Formatter

Beautify, minify and validate JSON with clear error messages.

Base64 Encoder

Encode text or files to Base64, including data URLs.

Base64 Decoder

Decode Base64 strings and data URLs back to text.

URL Encoder & Decoder

Percent-encode or decode URLs and query parameters instantly.

UUID Generator

Create cryptographically random version 4 UUIDs in bulk.

Hash Generator

Compute MD5, SHA-1, SHA-256 and SHA-512 digests from text.

Timestamp Converter

Convert Unix timestamps to dates and back, in UTC or local time.

HTML Minifier

Shrink HTML by removing whitespace, comments and noise.

CSS Minifier

Strip whitespace and comments to ship smaller stylesheets.

CSS Beautifier

Reformat minified CSS with clean indentation you can read.

JavaScript Minifier

Compress JavaScript by removing comments and dead whitespace.

JavaScript Beautifier

Reformat compressed JavaScript into readable, indented code.

HTML Beautifier

Indent messy HTML into a clean, readable document tree.

XML Formatter

Pretty-print and validate XML with clear error messages.

XML to JSON Converter

Turn any XML document into clean, formatted JSON.

JSON to XML Converter

Convert JSON objects and arrays into valid XML markup.

Markdown Previewer

Write Markdown and see the rendered HTML update live.

Regex Tester

Test regular expressions with live highlighting and capture groups.

URL Parser

Break any URL into protocol, host, path, query and fragment.

UUID Validator

Check UUID formatting and identify the version and variant.

MIME Type Checker

Look up the MIME type for any file extension or filename.

Random String Generator

Generate random strings, keys and IDs to your own recipe.

JWT Decoder & Validator

Decode, inspect, and validate JSON Web Tokens offline in your browser.

JWT Generator

Generate custom JWT tokens using HS256, HS384, or HS512 HMAC algorithms.

Cron Expression Generator

Build 5-part cron expressions visually with live human-readable explanations.

Cron Expression Parser

Parse cron expressions into plain English schedules and future execution dates.

SQL Formatter

Beautify, indent, and format SQL queries with customizable keyword casing.

SQL Minifier

Compress SQL code by stripping comments and unnecessary whitespace.

SQL to JSON Converter

Convert SQL INSERT statements or table queries into formatted JSON arrays.

JSON Diff Checker

Compare two JSON objects side-by-side and highlight additions, deletions, and edits.

YAML Formatter

Format, validate, and beautify YAML markup with syntax error checking.

YAML to JSON Converter

Convert YAML configuration files into formatted JSON instantly.

JSON to YAML Converter

Convert JSON payloads into clean, indented YAML configuration documents.

TOML to JSON Converter

Convert TOML configuration files into formatted JSON objects.

ENV File Generator

Build, format, and manage .env environment variable files with ease.

CSS Selector Generator

Generate unique CSS selectors for any HTML element.

XPath Generator

Generate relative and absolute XPath expressions from HTML elements.

HTML Table Generator

Generate responsive HTML tables visually with customizable rows, columns, and styling.

SEO Tools

19 tools

Clean URLs and search-ready content

Browse Category
URL Slug Generator

Turn any headline into a clean, SEO-friendly URL slug.

HTTP Header Checker

Inspect response headers, status and redirects for any URL.

Meta Tag Generator

Build a complete, search-ready meta tag block in seconds.

Robots.txt Generator & Validator

Create, inspect, and validate robots.txt rules, syntax errors, and crawler conflicts.

Sitemap Generator & Validator

Generate and validate XML sitemaps for sitemaps.org 0.9 protocol compliance.

Open Graph Generator

Generate Open Graph and Twitter Card tags for perfect link previews.

Schema Markup Generator

Generate JSON-LD schema for Article, FAQ, Organization, Product, and more.

Schema Validator

Validate structured data markup and highlight schema errors.

Canonical URL Generator

Generate canonical tags for SEO-friendly pages.

Hreflang Tag Generator

Generate hreflang tags for multilingual websites.

Redirect Generator

Generate 301, 302, 307, and 308 redirect rules for Apache and Nginx.

Keyword Density Checker

Calculate keyword frequency, density percentages, n-grams and detect overused words.

Readability Score Checker

Calculate Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG & ARI readability scores.

SEO Analyzer

Perform a complete on-page SEO audit for titles, metas, headings, OG tags & links.

Heading Structure Checker

Visualize and audit H1-H6 heading hierarchy to fix skipped levels and missing H1 tags.

Internal Link Checker

Audit internal links, detect broken anchors, orphan links, missing text & nofollow tags.

Canonical URL Checker

Validate canonical tags, detect missing or duplicate canonicals & fix indexing issues.

Open Graph Preview

Preview and validate Open Graph social media cards for Facebook, LinkedIn, Discord & Slack.

Twitter Card Preview

Preview summary and summary_large_image Twitter/X cards with live tag validation.

Category Hubs

Browse all 22 curated tool categories

12 tools

Image Tools

Explore free image tools to compress, resize, convert, crop, and optimize photos online with fast browser-based processing and zero server uploads.

Explore Hub
11 tools

PDF Tools

Explore free online PDF tools to merge, split, compress, unlock, and convert document files fast directly in your web browser with total privacy.

Explore Hub
7 tools

Text Tools

Explore free text tools to count words, analyze character counts, convert case styles, and clean up content fast without uploading your data.

Explore Hub
38 tools

Developer Tools

Explore free developer tools to format JSON, encode Base64 strings, parse JWT tokens, and generate cron expressions with fast client-side speed.

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3 tools

Generators

Explore free online generators to create QR codes, secure passwords, custom color palettes, and random items instantly with zero registration.

Explore Hub
5 tools

Calculators

Explore free online calculators to estimate loan EMIs, compound interest, BMI metrics, calories, and daily math formulas with accurate results.

Explore Hub
19 tools

SEO Tools

Explore free SEO tools to analyze webpage health, check canonical tags, evaluate keyword density, and preview social cards for higher search rankings.

Explore Hub
3 tools

Security Tools

Explore free security tools to measure password strength, generate cryptographic SHA hashes, and decode JWT payloads safely inside your browser.

Explore Hub
5 tools

Color Tools

Explore free color tools to convert HEX, RGB, and HSL values, pick precise colors, check WCAG contrast ratios, and design CSS gradient palettes.

Explore Hub
8 tools

CSS Tools

Explore free visual CSS generators for box shadows, glassmorphism, grid layouts, flexbox structures, and clip paths to get clean code fast now.

Explore Hub
5 tools

Utility Tools

Explore free utility tools to read QR codes, pick random names, generate barcodes, and solve everyday quick tasks fast online without signup.

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5 tools

Finance Tools

Explore free finance tools to calculate loan EMIs, evaluate compound interest, estimate GST taxes, and convert global currencies in real time.

Explore Hub
6 tools

File Tools

Explore free file tools to create ZIP archives, convert CSV, JSON, and Excel documents locally in your web browser without uploading sensitive data.

Explore Hub
4 tools

Encoding Tools

Explore free encoding tools to translate text into HTML entities, binary codes, ASCII numbers, and Morse code signals with instant browser speed.

Explore Hub
8 tools

Network Tools

Explore free network tools to lookup IP details, check DNS records, inspect WHOIS domain data, test open ports, and track propagation worldwide.

Explore Hub
8 tools

Converter Tools

Explore free online converter tools to convert units across length, weight, area, volume, temperature, speed, and digital data storage fast.

Explore Hub
5 tools

Date & Time Tools

Explore free date and time tools to convert global time zones, calculate business days, measure date gaps, and track time with online timers.

Explore Hub
7 tools

Health Tools

Explore free health tools to calculate daily calories, BMR ratios, body fat percentage, ideal body weight, running pace, and water intake fast.

Explore Hub
4 tools

DevOps Tools

Explore free DevOps tools to validate Docker Compose files, check Kubernetes manifests, and generate Nginx or Apache web server configurations.

Explore Hub
2 tools

Web Tools

Explore free web tools to encode HTML entities, decode structural markup, generate CSS selectors, and create clean sitemaps for your website.

Explore Hub
2 tools

Accessibility Tools

Explore free web accessibility tools to audit webpage HTML structure, verify WCAG contrast ratios, and optimize accessible site design fast.

Explore Hub
3 tools

Web Performance Tools

Explore free web performance tools to calculate Brotli and Gzip compression savings, analyze payload sizes, and speed up webpage load times.

Explore Hub

Blog Articles & Guides

In-depth articles, tutorials, and productivity roundups

Network Tools2026-08-26

What Is an IP Address? Everything Beginners Need to Know

Learn what an IP address is, how IPv4 and IPv6 work, public vs private IPs, static vs dynamic addresses, and how to look up an IP safely.

By Jeel ChhetaRead Article
Network Tools2026-08-25

DNS Records Explained: A, AAAA, MX, TXT, CNAME, and More

Learn how DNS records work, including A, AAAA, MX, TXT, CNAME, NS, and SOA records, with simple examples and practical DNS lookup tips.

By Jeel ChhetaRead Article
Network Tools2026-08-24

What Is WHOIS Lookup and Why Should You Use It?

Learn what WHOIS lookup is, what domain registration data it reveals, how to use it, and why it matters for security, research, and domain ownership.

By Jeel ChhetaRead Article
CSS & Web Design2026-08-23

CSS Neumorphism: Is It Still Worth Using in 2026?

Learn what CSS neumorphism is, its pros and cons, accessibility risks, and when to use it in modern web design with practical CSS examples.

By Jeel ChhetaRead Article
CSS & Web Design2026-08-22

Modern Glassmorphism UI Design Explained

Learn modern glassmorphism UI design with CSS. Discover glass effects, blur, transparency, borders, shadows, examples, and practical design tips.

By Jeel ChhetaRead Article
CSS Tools2026-08-21

Complete Guide to CSS Box Shadows

Learn CSS box shadow from scratch. Understand offsets, blur, spread, inset shadows, multiple shadows, examples, common mistakes, and best practices.

By Jeel ChhetaRead Article
Color Tools2026-08-20

How to Create Beautiful CSS Gradients

Learn how to create beautiful CSS gradients using linear, radial, and conic gradients with practical examples, color tips, and easy CSS techniques.

By Jeel ChhetaRead Article
Color Tools2026-08-19

HEX, RGB, and HSL Colors Explained for Beginners

Learn HEX, RGB, and HSL colors with simple examples. Understand CSS color codes, how they work, how to convert them, and when to use each format.

By Jeel ChhetaRead Article
Barcode Tools2026-08-18

Barcode vs QR Code: What's the Difference?

Barcode vs QR Code explained simply. Learn how they work, what they store, where they are used, and which option is right for you.

By Jeel ChhetaRead Article
QR Tools2026-08-17

What Is a QR Code and How Does It Work?

Learn what a QR code is, how QR codes work, what they store, how smartphones scan them, and how to create reliable QR codes for everyday use.

By Jeel ChhetaRead Article
Developer Tools2026-08-16

MD5 vs SHA-256 vs SHA-512: Which Hash Algorithm Is Best?

Compare MD5 vs SHA-256 vs SHA-512 to understand security, speed, hash length, and use cases. Learn which hash algorithm is best for your project.

By Jeel ChhetaRead Article
Developer Tools2026-08-15

UUID Explained: What It Is and Why Developers Use It

Learn what a UUID is, how UUIDs work, the different UUID versions, and why developers use them for unique IDs in apps, APIs, databases, and more.

By Jeel ChhetaRead Article
Developer Tools2026-08-14

Beginner's Guide to Base64 Encoding and Decoding

Learn Base64 encoding and decoding with simple examples. Understand how Base64 works, when to use it, and why it is not encryption.

By Jeel ChhetaRead Article
Developer Tools2026-08-13

JSON Formatter vs JSON Validator Explained: What's the Difference?

Learn the difference between a JSON formatter and JSON validator, how each works, when to use them, and how to fix common JSON syntax errors.

By Jeel ChhetaRead Article
Security & Privacy2026-08-12

How Password Strength Is Calculated: A Simple Guide

Learn how password strength is calculated using length, randomness, common patterns, and attack resistance. See how to create stronger passwords safely.

By Jeel ChhetaRead Article
Security & Privacy2026-08-11

How to Generate Strong Passwords That Can't Be Guessed

Learn how to generate strong passwords that are hard to guess. Discover the right password length, randomness, unique passwords, and simple security tips.

By Jeel ChhetaRead Article
Text Tools2026-08-10

Word Count vs Character Count: What's the Difference?

Learn the difference between word count vs character count, when to use each, and how to count words, spaces, punctuation, and characters.

By Jeel ChhetaRead Article
Text Tools2026-08-09

How to Remove Duplicate Lines from Text Instantly

Learn how to remove duplicate lines from text instantly using simple methods, online tools, spreadsheets, or code.

By Jeel ChhetaRead Article
PDF2026-08-08

PDF vs Word: Which Format Is Better for Sharing Documents?

PDF vs Word explained: compare formatting, editing, security, compatibility, and sharing to choose the best document format for your needs.

By Jeel ChhetaRead Article
PDF2026-08-07

Best Ways to Reduce PDF File Size Without Losing Quality

Learn the best ways to reduce PDF file size without losing quality. Discover simple compression methods, optimization tips, and free online PDF tools.

By Jeel ChhetaRead Article
PDF2026-08-06

How to Split Large PDF Files in Seconds for Free

Split large PDF files online in seconds for free. Learn the fastest, safest way to separate PDF pages without installing software or losing quality.

By Jeel ChhetaRead Article
PDF2026-08-05

How to Merge PDF Files Online for Free

Learn how to merge PDF files online for free in minutes. Follow this secure step-by-step guide and combine PDFs easily using TechbyJeel Tools.

By Jeel ChhetaRead Article
PDF2026-08-03

How to Convert Images to PDF Without Installing Software

Learn how to convert images to PDF online without installing software. Follow simple steps to combine JPG, PNG, and photos into a PDF file.

By Jeel ChhetaRead Article
Images2026-08-01

How to Compress Images Without Losing Quality Guide

Learn how to compress images without losing quality using the best techniques and free online tools. Reduce file size while keeping images sharp.

By Jeel ChhetaRead Article
Images2026-08-01

PNG vs JPG vs WebP: Which Image Format Should You Use in 2026?

Learn the difference between PNG, JPG, and WebP image formats. Discover which format is best for websites, social media, printing, and SEO.

By Jeel ChhetaRead Article
Productivity2026-07-31

25 Free Online Tools Everyone Should Bookmark in 2026

Discover 25 free online tools everyone should bookmark in 2026. Boost productivity with image, PDF, SEO, developer, calculator, and utility tools.

By Jeel ChhetaRead Article

Recommended Resources & Software

Curated third-party software, AI video creation tools, and productivity recommendations

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Company & Legal

About TechbyJeel Tools, contact channels, and regulatory policies