Free online tools that work in your browser
Count words, format JSON, compress images, merge PDFs, make QR codes and convert units. No sign-up, and your files never leave your device.
Text
Word CounterCount words, characters, sentences, paragraphs and reading time instantly.Case ConverterConvert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case.Remove Duplicate LinesRemove duplicate lines, sort lines A to Z, reverse order and delete empty lines.Text Diff CheckerCompare two texts line by line and see added and removed lines.
Developer
JSON Formatter & ValidatorFormat, minify and validate JSON online with clear error messages.Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text, with full UTF-8 support.URL Encoder & DecoderPercent-encode or decode URLs and query strings online.Regex TesterTest regular expressions live and see every match with its position.HTML Escape & UnescapeEscape special HTML characters or turn HTML entities back into text.HTML Formatter & MinifierBeautify messy HTML with indentation or minify it to save space.CSS Formatter & MinifierFormat CSS into readable rules or minify it for faster pages.SQL FormatterFormat SQL queries with uppercase keywords and clean line breaks.
Security
Password GeneratorGenerate strong random passwords with custom length and character types.Hash Generator (SHA-256)Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text.
Calculators
Unit ConverterConvert length, weight, volume, area, speed, time and temperature units.Loan EMI CalculatorCalculate monthly loan EMI, total interest and total payment.Age CalculatorFind your exact age in years, months and days, and days to your next birthday.Percentage CalculatorCalculate percent of a number, what percent one number is of another, and percentage change.
Design
Color Picker & ConverterPick a color and get its HEX, RGB and HSL values to copy.QR Code GeneratorCreate a QR code for any URL or text and download it as a PNG.
Image
PDF MergerMerge multiple PDF files into one document, privately in your browser.PDF SplitterSplit a PDF into single pages or extract page ranges like 1-3,5, privately in your browser.PDF RotatorRotate all pages of a PDF by 90, 180 or 270 degrees and save the result.Images to PDF ConverterConvert JPG and PNG images into a single PDF, one image per page.PDF to Image ConverterConvert each page of a PDF into a high-quality PNG image.
Why people use ToolWorlds
- Private: your data is processed locally.
- Fast: small pages, no installs.
- Simple: one tool per page, with clear instructions.
Frequently asked questions
- Are these tools really free?
- Yes. Every tool is free, with no sign-up.
- Are my files uploaded?
- No. Text, images and PDFs are processed in your browser, so they stay on your device.
- Which tools are available?
- Text, developer, PDF, image, security and calculator tools, including a PDF merger, splitter and rotator, JSON formatter, QR code generator, image compressor, and EMI and age calculators.