Useful online tools, all in one place.

Fast, private and easy-to-use browser tools.

Image Tools

7 tools

PNG to JPG

Convert PNG images to JPG quickly in your browser.

JPG to PNG

Convert JPG and JPEG images to PNG.

Image Compressor

Reduce image file size while keeping useful quality.

Image Resizer

Resize images by pixels or percentage.

WebP Converter

Convert between WebP, JPG and PNG formats.

Image Cropper

Crop images to any size or aspect ratio.

Rotate & Flip Image

Rotate, flip or mirror images in seconds.

PDF Tools

4 tools

PDF to JPG

Convert PDF pages into high-quality JPG images.

Merge PDF

Combine multiple PDF files into one document.

Split PDF

Split PDF pages or extract selected pages.

Images to PDF

Combine JPG, PNG and WebP images into one PDF.

Developer Tools

14 tools

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JSON Formatter

Format, validate and minify JSON data.

Base64 Encoder & Decoder

Encode or decode Base64 text locally.

Unix Timestamp Converter

Convert Unix timestamps and readable dates.

URL Encoder & Decoder

Encode or decode URL-safe text.

UUID Generator

Generate random UUID v4 identifiers.

JWT Decoder

Decode JWT headers and payloads.

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Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of local text or files.

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Regex Tester

Test JavaScript regular expressions and inspect matches, captures and positions.

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Number Base Converter

Convert large integers between binary, octal, decimal and hexadecimal without precision loss.

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HTML Entity Encoder & Decoder

Encode HTML special characters or decode named and numeric entities into plain text.

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Color Converter

Convert HEX, RGB and HSL colors with normalized values and a local preview.

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CSV ↔ JSON Converter

Convert CSV with headers to JSON or flat JSON objects to properly escaped CSV.

Text to Slug

Turn a heading or phrase into a lowercase, hyphen-separated URL slug with sensible Unicode handling.

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JSON ↔ YAML Converter

Convert JSON to readable YAML or YAML to formatted JSON locally, with safe parsing and clear errors.

Text Tools

9 tools

Word & Character Counter

Count words, characters and more as you type.

Case Converter

Convert text between common letter cases.

Remove Duplicate Lines

Remove duplicate lines from text or lists.

Text Diff Checker

Compare two texts and find their differences.

Lorem Ipsum Generator

Generate placeholder paragraphs, sentences or words for layouts and drafts.

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Markdown Preview

Write Markdown and preview headings, lists, links and code safely in your browser.

Line Sorter

Sort text lines alphabetically or numerically, reverse them or shuffle their order.

Find & Replace

Replace literal text or regular-expression matches while preserving your original input.

Remove Line Breaks

Join wrapped text with spaces or remove line breaks completely, with an option to preserve paragraphs.

Calculators

9 tools

Percentage Calculator

Calculate percentages and percentage changes.

Aspect Ratio Calculator

Calculate ratios and matching dimensions.

Unit Converter

Convert length, mass, temperature, volume, area, speed and data units locally.

Age Calculator

Calculate calendar age in years, months and days on a date you choose.

Date Calculator

Find the difference between dates or add and subtract calendar time.

Tip Calculator

Calculate a tip, total bill and per-person amounts without choosing a currency.

Percentage Change Calculator

Compare an original and a new value to find the percentage change and absolute difference.

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File Size Converter

Convert bytes, KB, MB, GB and TB to binary KiB, MiB, GiB and TiB without uploading a file.

DPI / PPI Calculator

Calculate screen pixel density from resolution and diagonal size, or print density from pixels and inches.

Finance

8 tools

Compound Interest Calculator

Calculate compound growth with regular contributions and a year-by-year balance table.

Loan Calculator

Calculate monthly loan payments, total interest and a yearly amortization summary.

Savings Goal Calculator

Find the monthly or yearly contribution needed to reach a savings target at a fixed rate.

Investment Return Calculator

Calculate gain or loss, total return and annualized return when no extra contributions were made.

Mortgage Calculator

Estimate mortgage principal, monthly principal and interest, and total repayment without taxes or fees.

Profit Margin Calculator

Calculate profit, margin and markup, or find a selling price from a desired margin or markup.

Discount Calculator

Calculate the final price and amount saved from an original price and percentage discount.

VAT Calculator

Add VAT to a net amount or remove VAT from a gross amount using your own percentage rate.

Security Tools

1 tool

Password Generator

Generate strong random passwords securely.

Generators

2 tools

QR Code Generator

Create customizable QR codes in your browser.

Random Number Generator

Generate random integers within a range, with optional unique results.

Built to make everyday tasks easier

HandyKitz brings useful online tools together in one place, helping you complete everyday tasks without unnecessary steps.

Simple by design

Straightforward tools without complicated interfaces. Choose a tool, complete your task, and move on.

Privacy matters

Many HandyKitz tools process files and information directly in your browser, helping you keep control of your data.

Tools for everyday work

From image editing and PDF utilities to calculations and developer tools, HandyKitz brings practical tools together in one place.

One place. More ways to get things done.

HandyKitz is an independent collection of free online tools designed to simplify everyday digital tasks.

Whether you’re working with images, PDF documents, text, code or calculations, our goal is to make useful tools easy to find and straightforward to use.

We’re continuously improving existing tools and expanding the collection based on practical needs.

Explore All Tools

Free online tools for everyday tasks

HandyKitz provides a growing collection of browser-based utilities for working with images, PDF documents, text, code and calculations.

Image tools help you convert, resize, crop and compress pictures. PDF utilities make it easier to merge, split and convert documents. Text and developer tools simplify formatting, encoding and other common tasks.

You can also find calculators for percentages, finances, measurements and everyday calculations. Many tools work directly in your browser, so you can get started without creating an account.

Frequently asked questions

Is HandyKitz free?

Yes. HandyKitz tools are free to use.

Do I need to create an account?

No. You can use HandyKitz tools without creating an account or signing in.

Are my files uploaded to a server?

Many tools process files directly in your browser. When a tool states that processing is local, your files are not uploaded to HandyKitz for that processing. Check the individual tool’s information and our Privacy Policy for the practices that apply.

What types of tools are available?

You’ll find image and PDF utilities, text and developer tools, calculators, finance tools, generators and security utilities.

Does HandyKitz work on mobile devices?

Yes. The site adapts to phones and tablets. Use a modern browser; support for some file, clipboard and download features depends on your browser and device.