Toolnest

Free · No sign-up · Runs in your browser

Free online tools for images, text, code and everyday maths.

50 fast, private utilities in one place. Resize and compress images, count words, format JSON, and work out loans, percentages, and unit conversions in seconds.

  • 50working tools
  • 13categories
  • 0uploads or sign-ups
  • 100%free to use

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The everyday essentials: image editing, writing, data, and money calculators. Open one and get a result straight away.

Browse all 50 tools

Image Tools

Resize, compress, convert, and crop PNG, JPEG, and WebP images.

All 4 Image Tools

Text Tools

Count words, change case, remove duplicates and extra spaces, make slugs.

All 5 Text Tools

Developer Tools

Format JSON, convert JSON to CSV, and encode Base64 and URLs.

All 5 Developer Tools

SEO Tools

Build UTM links, robots.txt files, and meta tags.

All 3 SEO Tools

Calculators

Percentages, percentage change, averages, and fractions.

All 5 Calculators

Finance

EMI, GST, discounts, profit margin, and bill splitting.

All 6 Finance

Investment

SIP, lumpsum, compound interest, simple interest, and CAGR.

All 5 Investment

Unit Converters

Convert length, weight, temperature, and data storage.

All 4 Unit Converters

Date & Time

Exact age, days between dates, and adding days to a date.

All 3 Date & Time

Health & Fitness

BMI with WHO and Asian categories, and BMR.

All 2 Health & Fitness

Education

GPA, percentage to CGPA, marks percentage, and attendance.

All 4 Education

Land & Property

Convert guntha, acre, hectare, and square feet; estimate plot cost.

All 2 Land & Property

Creator Tools

Strong passwords and HEX to RGB colour conversion.

All 2 Creator Tools

Why Toolnest

Online tools that respect your time and your files

Private by design

Every calculation and image edit happens on your own device. Photos you resize or compress are never uploaded to a server.

Instant results, no sign-up

No account, no download, no waiting in a queue. Open a tool, enter your values, and get the answer immediately.

The method is always shown

Each calculator lists its formula, a worked example, and its limits, so you can check the maths instead of trusting a black box.

Works on any device

Pages are lightweight and responsive, so tools load quickly on a phone, tablet, or laptop, even on a slow connection.

Popular ways people use these tools

Shrink a photo before emailing it with the image compressor or image resizer, prepare a blog post with the word counter, tidy an API response with the JSON formatter, or plan a home loan with the EMI calculator. Investors compare scenarios with the SIP calculator and compound interest calculator, and students check results with the GPA calculator.

Questions

Frequently asked questions

Are these online tools really free?

Yes. Every tool on this site is free to use, with no account, trial, or usage limit.

Are my files and inputs uploaded anywhere?

No. The tools process your inputs and supported image files locally in your browser, without a processing server. The website itself still makes normal hosting requests, and any analytics or advertising the operator enables may have their own privacy terms.

Which image formats are supported?

The image resizer, compressor, converter, and cropper accept PNG, JPEG, and WebP files up to 12 MB and export PNG, JPEG, or WebP where your browser supports it. Keep a copy of your original file.

Can I rely on a calculation for an important decision?

Treat results as informational estimates. Check each tool’s formula, units, and limitations, and confirm financial, tax, health, property, or legal decisions with a qualified professional.

Do the tools work on mobile?

Yes. The site is fully responsive and every tool works in modern mobile browsers. Interactive tools need JavaScript enabled.