64 Free Online Tools You Should Bookmark in 2026

# 64 Free Online Tools You Should Bookmark in 2026

The web is full of tools that ask you to sign up, upload your files, or load slowly with ads. FreeToolJet takes a different approach: every tool runs entirely in your browser. No data leaves your device. No account is needed. No tracking.

This article is a directory of all 64 tools, organized by category, with a brief explanation of when to use each one.

Developer Tools

JSON Formatter

Paste messy JSON and get clean, indented output. Validates syntax and shows errors with line numbers. Also minifies JSON for compact transmission. Essential for API debugging and configuration files.

Base64 Encoder / Decoder

Convert text or files to Base64 and back. Useful for embedding images in HTML/CSS, encoding API credentials, and transmitting binary data over text-only protocols.

URL Encoder / Decoder

Encode URLs to safely transmit special characters (spaces, ampersands, non-ASCII). Decodes percent-encoded URLs back to readable text. Essential for building query strings and API requests.

HTML Encoder / Decoder

Convert HTML special characters (<, >, &, quotes) to entities and back. Prevents XSS when displaying user-generated content and decodes entity-laden text from databases.

JWT Decoder

Decode JSON Web Tokens to inspect header and payload. Useful for debugging authentication flows and verifying token contents without writing code.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text. Used for file integrity checks, password hashing (with proper salting), and data fingerprinting.

UUID Generator

Create RFC 4122 compliant UUIDs (v4 random). Used for database primary keys, session identifiers, and distributed system IDs.

Regular Expression Tester

Test regex patterns against sample text with real-time highlighting. Supports flags (global, case-insensitive, multiline) and shows capture groups.

Cron Expression Parser

Parse cron expressions to see the next execution times. Essential for scheduling jobs in Linux, Kubernetes, and CI/CD pipelines.

Code Diff Checker

Compare two text snippets line by line and highlight differences. Useful for code review, configuration comparison, and version control.

Text Tools

Word Counter

Count words, characters, sentences, and paragraphs. Estimates reading time. Essential for writers, students, and SEO professionals tracking content length.

Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more. Useful for formatting code identifiers and headlines.

Text Reverser

Reverse text by characters, words, or lines. A simple utility that is surprisingly useful for certain text processing tasks.

Find and Replace

Search and replace text with optional regex support. Useful for batch editing, data cleaning, and code refactoring.

Remove Duplicate Lines

Strip duplicate lines from a list. Options to preserve order, case-insensitive matching, and trim whitespace. Essential for cleaning exported data.

Sort Lines

Alphabetize lines, sort by length, or reverse order. Useful for organizing lists, preparing data for import, and creating sorted indexes.

Whitespace Remover

Strip extra spaces, tabs, and blank lines. Options to trim leading/trailing whitespace and collapse multiple spaces. Essential for cleaning copied text.

Punctuation Remover

Remove punctuation from text. Useful for NLP preprocessing, search indexing, and creating clean slugs.

Line Number Adder

Add line numbers to text in various formats. Useful for code reviews, legal documents, and educational materials.

Lorem Ipsum Generator

Generate placeholder text for design mockups and database seeding. Options for paragraph count and word count.

Slug Generator

Create SEO-friendly URL slugs from titles. Converts to lowercase, replaces spaces with hyphens, removes special characters, and strips stop words.

HTML Entities Encoder / Decoder

Convert special characters to HTML entities and back. Essential for displaying code snippets in HTML and preventing XSS.

Binary Translator

Convert text to binary representation and back. Educational tool for understanding how computers encode characters.

Image and Design Tools

QR Code Generator

Create QR codes for URLs, WiFi credentials, contact info (vCard), and plain text. Customizable size and error correction level.

Image to Base64

Convert images to Base64 data URIs for embedding in HTML/CSS. Eliminates HTTP requests for small images.

Image Resizer

Resize images to specific dimensions. Options to maintain aspect ratio and choose output format. Runs locally with no upload.

Placeholder Image Generator

Generate placeholder images with custom dimensions, colors, and text. Useful for prototyping and layout testing.

CSS Gradient Generator

Create CSS linear, radial, and conic gradients with a visual editor. Copy the generated CSS code directly.

CSS Box Shadow Generator

Design box shadows with a visual editor. Control offset, blur, spread, color, and inset. Copy the CSS code.

CSS Border Radius Generator

Create rounded corners with a visual editor. Supports individual corner control and elliptical shapes.

Color Picker and Converter

Pick colors and convert between HEX, RGB, HSL, and CMYK. Useful for web design and print production.

Black and White Photo Converter

Convert color photos to black and white with adjustable intensity. Runs locally in the browser.

Security Tools

Password Generator

Generate cryptographically secure random passwords. Options for length, character types, and exclude ambiguous characters.

Credit Card Generator

Generate Luhn-valid test credit card numbers for development and testing. Essential for testing payment forms without using real cards.

Fake Address Generator

Generate realistic but fake addresses for testing forms and databases. Supports multiple countries.

Random String Generator

Generate random strings for API keys, session tokens, and test data. Options for length, character set, and pattern.

Everyday Tools

Age Calculator

Calculate exact age in years, months, and days. Also calculates the time between two dates.

Date Difference Calculator

Count days between two dates. Handles leap years automatically. Useful for project planning and deadlines.

Countdown Timer

Count down to a specific date and time. Useful for events, deadlines, and product launches.

Timestamp Converter

Convert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds. Essential for log analysis and API debugging.

Unit Converter

Convert between metric and imperial units for length, weight, temperature, speed, and more.

Speed Converter

Convert between mph, km/h, m/s, knots, and other speed units. Useful for international travel and engineering.

Screen Resolution Checker

Display your current screen resolution and viewport size. Useful for responsive design testing.

IP Address Lookup

Look up your IP address and approximate geolocation. Useful for network troubleshooting and VPN verification.

Meta Tag Generator

Generate HTML meta tags for SEO and social sharing. Supports Open Graph, Twitter Cards, and standard meta tags.

Robots.txt Generator

Generate robots.txt files to control search engine crawling. Supports all major directives and pattern matching.

Why Browser-Based Tools Are Better

Privacy

Every tool on FreeToolJet runs in your browser using JavaScript. Your data is never uploaded to a server. This means:

• Your text, files, and inputs cannot be logged, leaked, or sold
• No server-side database can be hacked because there is no database
• You can use these tools offline once the page is loaded

Speed

Browser-based tools are instant. There is no network round-trip for processing. Paste your data, get results immediately.

Cost

Because there are no servers to maintain for processing, browser-based tools are sustainable at zero cost. FreeToolJet is free and will stay free.

Compatibility

These tools work in any modern browser on any device. Desktop, laptop, tablet, or phone. Windows, Mac, Linux, iOS, or Android. If it runs a browser, it runs these tools.

How to Get the Most Out of These Tools

1. Bookmark this page so you can find these tools quickly
2. Use the search bar (Ctrl+K or Cmd+K) to jump to any tool
3. Check the blog for in-depth guides on specific tools
4. Share useful tools with your team and friends

All 64 tools are free, with no signup, no upload, and no tracking. Use our free online tools anytime.