All free tools
Every tool runs locally in your browser — fast, private and free forever. Search, filter by category, or jump straight in.
34 tools
JSON Formatter & Validator
Format, minify and validate JSON in real time.
Developer ToolsBase64 Encoder & Decoder
Encode text to Base64 and decode it back instantly.
Developer ToolsURL Encoder & Decoder
Percent-encode or decode any URL or query string.
Developer ToolsHash Generator (SHA-1, SHA-256, SHA-512)
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text.
Developer ToolsUUID v4 Generator
Generate random UUID v4 identifiers in bulk, instantly.
Developer ToolsUnix Timestamp Converter
Convert Unix timestamps to readable dates and back.
Developer ToolsRegex Tester
Test regular expressions live with syntax highlighting.
Developer ToolsJWT Decoder
Decode JWT header and payload locally, without sending data anywhere.
Developer ToolsCSV to JSON Converter
Convert CSV to JSON and back, with custom delimiters.
Developer ToolsWord & Character Counter
Count words, characters, sentences and reading time live.
Text & WritingCase Converter
Convert text to UPPER, lower, Title, camelCase, snake_case and more.
Text & WritingLorem Ipsum Generator
Generate placeholder text as paragraphs, sentences or words.
Text & WritingText Diff Checker
Compare two texts and see every difference highlighted.
Text & WritingSlug Generator
Turn any title or phrase into a clean URL slug.
Text & WritingMarkdown to HTML Converter
Convert Markdown to clean HTML with a live preview.
Text & WritingQR Code Generator
Generate free, high-quality QR codes with custom colors.
Images & MediaImage to Base64 Converter
Convert any image to a Base64 data URI with one click.
Images & MediaImage Resizer
Resize images online to exact pixels or percentages.
Images & MediaStrong Password Generator
Generate cryptographically strong passwords with an entropy meter.
Security & PasswordsPassword Strength Checker
Analyze any password's entropy, strength and crack time.
Security & PasswordsUnit Converter
Convert length, weight, temperature, data and more.
Calculators & ConvertersPercentage Calculator
Calculate percentages, ratios and percentage change instantly.
Calculators & ConvertersAge Calculator
Calculate exact age in years, months and days from any birth date.
Calculators & ConvertersBMI Calculator
Calculate your Body Mass Index with category and healthy weight range.
Calculators & ConvertersRandom Number Generator
Generate random numbers within any range, with unique & sort options.
Calculators & ConvertersPDF Merger
Combine multiple PDF files into one, in any order.
PDF ToolsPDF Splitter & Page Extractor
Split PDFs by page ranges or extract pages into a new file.
PDF ToolsLoan Calculator
Calculate monthly payments and see the full amortization schedule.
Calculators & ConvertersCurrency Converter
Convert between 30+ world currencies with live rates.
Calculators & ConvertersImage Compressor
Compress JPG, PNG and WebP images with quality control, in batches.
Images & MediaAI Text Generator
Generate AI-style outlines, descriptions, emails and captions.
Text & WritingZIP Extractor & Viewer
Open ZIP archives, browse contents and extract files in your browser.
Developer ToolsRAR & 7Z Viewer
Open RAR, 7Z, TAR and more — browse, preview and extract in your browser.
Developer ToolsZIP Creator
Create ZIP archives from multiple files with selective compression.
Developer Tools