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ToolsOnDuty - free online tools
801+ free tools · no sign-up · runs in your browser

Every tool. Ready when duty calls.

Fast, free, privacy-friendly online tools. Most run entirely in your browser, with no uploads and no sign-up.

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Reliable, high-utility workflows selected from our strongest categories.

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Featured toolDeveloper Tools
JSON Formatter

Format, validate and minify JSON instantly.

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Featured toolPDF Tools
Merge PDF

Validate, unlock, preview, reorder and combine multiple PDF files into one polished document.

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Featured toolImage Tools
Image Compressor

Shrink an image's file size with an adjustable quality slider and see how much you save.

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Featured toolText Tools
Character Counter

Count characters, words, sentences, emojis and syllables, set a custom limit, check readability and see live platform limits.

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Featured toolGenerators
Password Generator

Create strong, random passwords with custom rules.

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Featured toolImage Tools
Background Remover

Remove the background from a photo with in-browser AI and download a transparent PNG.

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Featured toolImage Tools
QR Code Generator

Create scan-ready QR codes with payload starters, custom colours, quiet zones and PNG or SVG export.

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Featured toolFinance Calculators
Loan Calculator

Calculate monthly payment, total payment and total interest for a loan.

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Featured toolDate & Time Calculators
Age Calculator

Calculate exact age, age in total units and the next birthday from any date.

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Featured toolWeb & SEO
Meta Tag & Open Graph Generator

Generate SEO, Open Graph and Twitter meta tags with a live social preview.

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Featured toolBusiness & Marketing
Invoice Generator

Design a branded professional invoice with premium themes, logo, cover image, flexible line items, taxes, discount, payment details and signature.

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Featured toolJob & Career
Resume Builder

Create a general professional resume for business, operations, sales, management and service roles.

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Built around real tasks

Choose a workflow, not just a utility

Move from source to finished result with focused tools that work well together.

ToolsOnDuty Developer API

Use deterministic tools inside your own application

Call versioned JSON endpoints with a private API key. Create a developer account, test integrations with 100 free credits every month, and track the remaining balance from your dashboard.

100 free credits
Reset every month
API-key secured
Authenticated requests
Consistent JSON
Versioned API responses

API credits are separate from the free browser tools. Credits are charged only after an endpoint completes successfully. Higher-volume pricing may be introduced later; planned paid tiers are clearly marked as coming soon.

Authenticated request
curl -X POST \
  https://toolsonduty.com/api/v1/hash \
  -H "Authorization: Bearer <api-key>" \
  -H "Content-Type: application/json" \
  -d '{"text":"hello"}'
{
  "ok": true,
  "data": { ... }
}

Explore the complete library

Browse by category

From quick text cleanup to advanced PDF, image and developer workflows.

Wishes & Greetings

Create personalized festival, birthday and occasion greetings to download or share.

Text Tools

Count, clean, convert and transform text.

Developer Tools

Private browser tools to format, validate, encode, parse, compare and debug code or structured data without uploading it.

Converters

Convert between units, formats and values.

Generators

Generate passwords, UUIDs, tokens, mock data and more.

Image Tools

42 private browser tools to edit, optimize, create, scan and deliver images without uploads or watermarks.

CSS & Design

Build gradients, shadows, easing curves and colour palettes for the web.

PDF Tools

53 private browser tools to organize, protect, unlock, repair, inspect, sanitize, optimize, label, mix, bookmark, manage attachments, edit, convert, sign, scan, OCR and extract PDFs without uploads or watermarks.

Math Calculators

Solve everyday, scientific and number problems with accurate calculators.

Date & Time Calculators

Calculate ages, dates, durations, working days and time zones.

Health & Fitness

Calculate BMI, calories, body fat, ideal weight and other health numbers.

Finance Calculators

Calculate loans, interest, investments, discounts, taxes and everyday money problems.

Security & Cryptography

Generate hashes, passwords, tokens and work with JWTs and ciphers.

Typing Tools

Learn touch typing, test your speed and type any language phonetically.

Student & Education

Calculate grades, plan study, create learning material and manage classroom work.

Job & Career

Build applications, prepare for interviews, compare offers and manage your job search.

Social Media

Create captions, hashtags, bios, video copy and organized content plans.

Business & Marketing

Create commercial documents, calculate pricing and plan practical marketing work.

Productivity & Time

Timers, a stopwatch, Pomodoro, an alarm, a notepad and a to-do list.

Random & Fun

Spin a wheel, roll dice, flip a coin, pick teams and make random decisions.

Browser Games

Play word, math, logic, memory and classic browser games.

IP & Network Tools

Check public IP details, DNS, WHOIS, ASN, subnets and CIDR ranges.

Web & SEO

Build robots.txt, redirects, meta tags, UTM links and structured data.

Free online tools for everyday tasks

ToolsOnDuty is a growing collection of free online developer, text, calculator, converter, date and finance tools. Instead of installing apps or juggling a dozen websites, you get fast, focused utilities that do one job well, all in one place.

Format and validate JSON, encode Base64, count and clean text, generate secure passwords and hashes, calculate percentages, loans and dates, and convert colours, numbers and units. Each tool comes with a clear explanation, examples and answers to common questions, so you can get the result you need and understand how it works.

Most tools run entirely in your browser, which keeps them fast and private. There is no sign-up required for public tools. Developer API usage is separate, authenticated and measured with monthly credits.

Why use ToolsOnDuty?

Free browser tools

Public browser tools are ready to use without mandatory accounts or hidden result screens.

No sign-up

Start using any tool instantly. No account or email required.

Private by design

Most tools run in your browser, so your data stays on your device.

Fast and lightweight

Clean, focused pages that load quickly and get out of your way.

No unnecessary uploads

Browser-based tools process your input locally, with nothing sent to a server.

Genuinely useful

Each tool includes clear steps, examples and answers to common questions.

Learn before you ship

Practical guides from the blog

Clear explanations, common mistakes and reliable workflows for getting better results.

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Good to know

Frequently asked questions

The essentials about privacy, access, browser processing and professional use.

Is ToolsOnDuty free to use?

Yes. Public browser tools are free to use without mandatory registration. Developer API access is separate and metered, with 100 free credits each month for testing and small integrations.

Do my files and text leave my device?

Most tools process directly in your browser. Tools that use a network service clearly disclose it on their page before you use them.

Do I need to create an account?

No account is required for public browser tools. The Developer API requires an account and private API key so requests, security and monthly credits can be managed.

Which devices and browsers are supported?

ToolsOnDuty works on current desktop and mobile browsers. Large PDF, image or OCR jobs depend on the memory and processing power available on your device.

Why do some tools have a Featured badge?

Featured tools are mature, high-utility workflows selected for their category. The same badge is used consistently on category and homepage cards.

Can I use the tools for business work?

Yes. The suite includes developer, document, finance, design, education and business workflows. Always review important output before relying on it professionally.