Free online tools for your images, calculations and code

No sign-up, no watermark. Most image tools run in your browser: your files stay with you.

Image tools

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Compress image

Cut a photo's file size, one at a time or in bulk.

Favicon generator

Create favicon.ico, PNG icons and a manifest for a website.

Convert image

Switch between formats: JPG, PNG, WebP.

Remove background

Cut out a subject and get a transparent PNG.

Resize image

Change pixel dimensions, with or without cropping.

Image metadata

See what a photo reveals: camera, date, GPS.

Add a watermark

Stamp your logo on a photo before publishing it.

Blur or sharpen

Soften a whole image or bring out its details.

Calculators

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Time

Time additions/differences

VAT

VAT calculation

Percentage

Variations and shares

Concrete

Volume, cement bags, mix

Zakat

Annual zakat calculation

Loan

Monthly payments and interest

BMI

Body mass index

Calories

BMR/TDEE/Macros

Savings

Savings projection

Age

Calculate your exact age

Password

Secure generator

Tip

Split the bill and the tip

Developer tools

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UUID v4

Generate unique identifiers

Slug

SEO slug generator

JSON Validator

Validate and format JSON

Base64

Encode / decode Base64

Hash

SHA, MD5, etc.

JWT

Decode and inspect JWT

Regex

Test regular expressions

Minify

Minify CSS/JS/HTML

Lorem Ipsum

Generate placeholder text

Timestamp

Convert unix ⇄ date

Colors

Palettes and conversions

QR Code

Generate QR codes

Converters

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Temperature

Celsius, Fahrenheit, Kelvin

Length

m, cm, mm, km, in, ft, yd, mi

Weight

g, kg, lb, oz

Volume

ml, L, tsp, tbsp, cup, pint

Area

m², cm², ha, km², ft²

Speed

km/h, m/s, mph, knot

Number Bases

binary, octal, decimal, hexadecimal

Energy

Calories ⇄ kJ

Colors

HEX, RGB, HSL

Why use Online Toolset?

Online Toolset brings together free tools for everyday calculations, web development, unit conversion, and image processing. The goal is simple: fast, readable, repeatable answers without mandatory sign-up.

Common conversions and calculations run in your browser whenever possible.
Tools are designed for practical work: developers, freelancers, students, content creators, and small businesses.

Clear, practical guidance

Each tool explains what it does, when to use it, and what limits to keep in mind. Finance and health calculators are informational: they do not replace professional advice, but they make quick estimates easier and more transparent.

Suggest a tool or contact us

Have an idea to add, a bug to report or feedback? Send us a message.