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Browser-native utilities for developers, students, designers, and teams. Convert, format, generate, encode, compare, and validate with speed and privacy.

530+ tools13 categoriesUpdated regularly

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Developer Tools

Unit Converters

Math & Calculators

Web & SEO Tools

Encryption & Security

Date & Time Tools

Image Tools(4)

Image Converter

Convert images between PNG, JPG, WebP, GIF, and BMP formats instantly.

Reduce image file size with adjustable quality. See before/after comparison.

Resize images to exact dimensions with aspect ratio lock and preset sizes.

Convert images to Base64 strings and Base64 strings back to images.

Developer Tools(54)

Format, validate, and minify JSON with syntax highlighting and error detection.

Encode text to Base64 or decode Base64 strings. UTF-8 safe.

Encode or decode URLs and query parameters. Supports component and full URL modes.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.

Test regular expressions with live match highlighting, capture groups, and flag toggles.

Decode JWT tokens to inspect header, payload, and signature. Shows expiration status.

Compare two texts side-by-side or inline with highlighted differences.

Generate UUID v4 identifiers. Bulk generation up to 1000 at a time.

Text Tools(60)

Count words, characters, sentences, paragraphs, and estimate reading time.

Convert text between uppercase, lowercase, title case, camelCase, snake_case, and more.

Generate placeholder text by paragraphs, sentences, or words.

Markdown Editor

Write Markdown with live HTML preview. Syntax highlighting and instant rendering.

Password Generator

Generate strong, random passwords with customizable length and character sets.

Reverse text, words, or lines in any order.

Repeat text a specified number of times with separators.

Remove line breaks and join text into one paragraph.

Data Tools(42)

Convert between JSON, YAML, CSV, XML, and TOML formats instantly.

Generate QR codes from text or URLs. Customize size, colors, and error correction.

Convert JSON data to YAML format instantly.

Convert YAML data to JSON format instantly.

Convert JSON arrays to CSV spreadsheet format.

Convert CSV spreadsheet data to JSON arrays.

Convert JSON data to XML document format.

Convert XML documents to JSON format.

Unit Converters(80)

Convert pixels to rem and em units for responsive web design.

Convert inches to centimeters and back instantly.

Convert centimeters to inches quickly and accurately.

Convert feet to meters and other metric length units.

Convert kilometers to miles and vice versa.

Convert miles to kilometers instantly.

Convert meters to feet and inches accurately.

Convert millimeters to inches with high precision.

Math & Calculators(55)

Calculate percentages, percentage of a number, and increases.

Calculate exact age in years, months, and days.

Calculate Body Mass Index from height and weight.

Calculate tips and split bills between people.

Calculate monthly payments, interest, and amortization.

Calculate mortgage payments with taxes and insurance.

Calculate sale price after discount percentage.

Calculate cumulative and semester GPA from grades.

Web & SEO Tools(40)

Generate HTML meta tags for SEO and social sharing.

Generate Open Graph meta tags for social media sharing.

Generate Twitter Card meta tags for rich previews.

Generate robots.txt files for search engine crawlers.

Generate XML sitemaps for search engine indexing.

Generate JSON-LD structured data for SEO.

Generate favicon HTML link tags for all platforms.

Generate web app manifest (manifest.json) files.

Encryption & Security(30)

Encrypt and decrypt text using AES-128, AES-192, or AES-256.

Encrypt and decrypt text using the DES algorithm.

Encrypt and decrypt data using XOR bitwise operation.

Shift letters by a fixed number to encode or decode text.

Vigenere Cipher

Encode and decode text using the Vigenere polyalphabetic cipher.

Reverse the alphabet to encode or decode text with Atbash.

Encode and decode text using the rail fence transposition cipher.

Decode PEM-encoded SSL/TLS certificates and inspect fields.

Color Tools(25)

Pick colors visually and get HEX, RGB, and HSL values.

Pick colors and get hexadecimal color code output.

Pick colors with alpha transparency in RGBA format.

Pick colors using hue, saturation, and lightness sliders.

Create linear and radial CSS gradients with live preview.

Tailwind Colors

Browse and pick colors from the Tailwind CSS color palette.

Generate harmonious color palettes from a base color.

Convert hexadecimal color codes to RGB values.

CSS Tools(35)

Generate CSS box-shadow with visual controls and live preview.

Generate CSS text-shadow with offset, blur, and color controls.

Generate CSS border-radius with per-corner controls.

Generate CSS flexbox layouts with visual property controls.

Generate CSS Grid layouts with columns, rows, and gap controls.

Create CSS keyframe animations with timing and easing controls.

Generate CSS transitions with property, duration, and easing.

Generate CSS transform values with rotate, scale, and translate.

Number Tools(40)

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

Convert numbers between hexadecimal and other bases.

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

Convert numbers between any base from 2 to 36.

Convert between decimal and IEEE 754 floating-point binary.

Convert between decimal and two's complement binary.

Convert fractions to decimal numbers with precision control.

Convert decimal numbers to simplified fractions.

Date & Time Tools(35)

Convert between Unix timestamps and human-readable dates.

Convert times between different time zones worldwide.

Convert UTC time to your local timezone automatically.

Convert hours and minutes to decimal hours and vice versa.

Calculate the difference between two dates in various units.

Add a number of days to any date and get the result.

Subtract days from a date to find a past date.

Find the day number (1-366) for any date in the year.

File Tools(30)

Extract plain text content from PDF documents.

Convert CSV files to JSON format with header mapping.

Convert JSON arrays to CSV format with column headers.

Convert XML documents to JSON format preserving structure.

Convert JSON data to well-formed XML documents.

Convert Markdown documents to downloadable PDF files.

Convert HTML content to downloadable PDF files.

Convert LaTeX markup to rendered HTML output.

Building the 10/10 tools index

Track coverage, quality standards, and functionality distribution across the entire catalog.

Open Functionality Map Open Quality Standards

Frequently Asked Questions

Are YFT tools really free?

Yes. Core tools are free to use with no signup required.

Do these tools upload my files or text?

Most tools run in-browser. Every tool page includes a processing disclosure so you can verify behavior.

How many tools are available?

530 tools across 13 categories.

How do I report incorrect output?

Use the report link on any tool page or submit a structured report at /report.