Compress JPG, PNG and WebP images in your browser to reduce file size without uploading them. See real before-and-after sizes and download the result.

Image Tools

Image Resizer

Resize images to exact pixel dimensions or by percentage. Keep the aspect ratio locked, choose JPG, PNG or WebP output, and download locally.

Image Tools

JPG to PNG Converter

Convert JPG images to PNG losslessly in your browser. Preview the result and download the PNG file - no uploads, no accounts, no limits.

Image Tools

PNG to JPG Converter

Convert PNG images to JPG in your browser with adjustable quality. Preview and download - everything stays on your device.

Image Tools

Calculators

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Percentage Calculator

Calculate percentages, percentage increases, decreases and percentage differences quickly and accurately with clear step-by-step formulas.

Calculators

Age Calculator

Calculate exact age from a date of birth in years, months and days. See your next birthday, total days lived and more - all in your browser.

Calculators

Loan Calculator

Estimate monthly payments on a loan, see total interest and total cost, and review a full month-by-month amortization schedule.

Calculators

Discount Calculator

Find the final price after a discount and the exact amount you save. Works for sale prices, vouchers and percentage markdowns.

Calculators

Profit Calculator

Calculate profit, profit margin and profit percentage from cost price and selling price. Clear results for pricing decisions.

Calculators

Ratio Calculator

Simplify ratios, scale them to an equivalent ratio and compare two ratios. Handy for recipes, mixes, geometry and proportions.

Calculators

Scientific Calculator

A full scientific calculator with trigonometry, logarithms, powers, roots, constants and DEG/RAD modes. Safe expression parser, no eval.

Calculators

Text Tools

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Word Counter

Count words, characters, sentences, paragraphs and reading time instantly as you type. Free, private and fully browser-based.

Text Tools

Character Counter

Count characters, characters without spaces, words and lines as you type. Handy for tweet, bio and form limits - fully offline and free.

Text Tools

Case Converter

Convert text between uppercase, lowercase, Title Case, sentence case, camelCase, PascalCase, snake_case and kebab-case instantly.

Text Tools

Remove Duplicate Lines

Remove duplicate lines from lists and text. Keep the first or last occurrence, ignore case and trim whitespace. Copy or download the result.

Text Tools

Developer Tools

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JSON Formatter

Format, minify and validate JSON instantly. Clear syntax error messages with position, one-click copy and download in your browser.

Developer Tools

JSON Validator

Validate JSON online and get a precise error message with the position of the problem. Fast, local and free.

Developer Tools

UUID Generator

Generate cryptographically random UUID v4 identifiers in your browser. Bulk generation, copy and download - no server round-trips.

Developer Tools

Base64 Encoder / Decoder

Encode text to Base64 and decode Base64 back to text, with full Unicode support. Fast, local and free - no uploads.

Developer Tools

URL Encoder / Decoder

URL-encode text with percent-escapes and decode it back. Handles query strings, parameters and Unicode correctly in your browser.

Developer Tools

Password Generator

Generate strong, random passwords with secure browser crypto. Choose length and character types, exclude ambiguous characters, and copy instantly.

Developer Tools

Internet Speed Test

Measure your connection's download speed and latency against this site's own server. Honest about what it does and does not measure.

Developer Tools

Education Tools

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Grade Calculator

Convert marks scored and total marks into a percentage and letter grade as fast as you finish your exam. Configurable grading scale.

Education Tools

GPA Calculator

Calculate your GPA from courses, grades and credit hours. Configurable 4.0 or 5.0 grading scale with live totals.

Education Tools

CGPA Calculator

Calculate your cumulative CGPA from multiple semesters. Add each semester's GPA and credit hours; the weighted average updates live.

Education Tools

Conversion Tools

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Unit Converter

Convert length, weight, temperature, area, volume, speed, time and data storage units instantly. Eight categories, fully offline.

Conversion Tools

Currency Converter

Convert between world currencies. Uses a live rates endpoint when a backend is configured, and a clearly-labeled manual mode with approximate rates otherwise.

Conversion Tools

Time Zone Converter

Convert a date and time between major world time zones with proper daylight-saving handling. Uses the browser's timezone database.

Conversion Tools

Business Tools

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Resume Builder

Build a clean, professional resume in your browser. Sections for experience, education, skills and more, with live preview and print/PDF export.

Business Tools

Invoice Generator

Create professional invoices in your browser. Add items, taxes and discounts, upload a logo, print, and save as PDF - no data leaves your device.

Business Tools

QR Tools

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QR Code Generator

Generate QR codes for URLs, text, emails, phone numbers, Wi-Fi and SMS. Download as PNG or SVG. Works offline, entirely in your browser.

QR Tools