About Hasare
Hasare is a collection of free, fast, and secure developer tools that run entirely in your browser.
Our Mission
We believe developer tools should be simple, fast, and respect your privacy. That's why every tool on Hasare processes data locally in your browser - your sensitive code, API keys, and data never leave your device.
Why Choose Hasare?
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100% Private
All processing happens in your browser. No data is sent to any server.
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Lightning Fast
Instant results with zero network latency. No waiting for servers.
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Always Free
No sign-up, no limits, no premium tiers. Free forever.
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Works Everywhere
Use on any device with a modern web browser. Desktop, tablet, or mobile.
Our Tools
We currently offer 100 developer tools:
- URL Encoder - Encode or decode URLs securely.
- Base64 Encoder - Encode and decode Base64 strings.
- Character Counter - Count characters, words, and lines.
- JSON Formatter - Beautify and validate JSON data.
- Diff Checker - Compare text or code side-by-side.
- Hash Generator - Generate MD5, SHA-1, SHA-256 hashes.
- SVG to PNG - Convert SVG code or files to PNG.
- URL Parser - Analyze URL components and params.
- YAML to JSON - Convert between YAML and JSON.
- Image Compressor - Compress PNG, JPG & WebP images locally.
- JWT Decoder - Decode and inspect JWT tokens.
- UUID Generator - Generate random UUIDs instantly.
- Color Converter - Convert colors between HEX, RGB, HSL.
- Cron Generator - Build cron expressions visually.
- Regex Tester - Test regular expressions live.
- CSV to JSON - Convert CSV data to JSON format.
- Text Case Converter - Convert between camelCase, snake_case, kebab-case, and more.
- HMAC Generator - Generate HMAC-SHA256 and HMAC-SHA512 signatures.
- JSON to CSV - Convert JSON data to CSV format.
- HTML Beautifier - Beautify and minify HTML code.
- Password Generator - Generate secure random passwords.
- Slug Generator - Convert text to URL-friendly slugs.
- Lorem Ipsum Generator - Generate placeholder text for mockups.
- Text Encryption - Encrypt and decrypt text with AES.
- Unix Timestamp - Convert timestamps to dates and vice versa.
- CSS Minifier - Minify CSS to reduce file size.
- QR Code Generator - Generate customizable QR codes instantly.
- Age Calculator - Calculate your exact age in years, months, and days.
- Date Difference Calculator - Calculate duration between two dates.
- ASCII Art Generator - Convert images to ASCII art instantly.
- Number Base Converter - Convert between binary, octal, decimal, and hex.
- Text to Binary - Convert text to binary and binary back to text.
- Box Shadow Generator - Create CSS box-shadow with a live preview.
- Loan Calculator - Calculate monthly EMI, total interest, and amortization.
- Interest Calculator - Calculate simple and compound interest with contributions.
- Loan Prepayment Calculator - See how much you save by prepaying part of a loan.
- HTTP Status Codes - Look up any HTTP status code and its meaning.
- MIME Types Lookup - Find the MIME type for any file extension.
- HTTP Headers Reference - Browse common request and response headers.
- User-Agent Parser - Parse a user-agent string into browser and OS.
- Line Sorter - Sort, deduplicate, and clean up lists of lines.
- Find & Replace - Replace text or regex matches with full control.
- Reverse Text - Reverse characters, words, or lines instantly.
- Morse Code Translator - Translate text to and from Morse code.
- Caesar Cipher - Encode and decode ROT13 and Caesar shift ciphers.
- Reading Time Calculator - Estimate reading and speaking time from word count.
- Word Frequency Counter - Count and rank the most common words in text.
- Text to Speech - Read text aloud using your browser voices.
- JSON to TypeScript - Generate TypeScript interfaces from JSON.
- JSON to Go - Generate Go structs with json tags from JSON.
- JSON to C# - Generate C# classes from JSON payloads.
- JSON to XML - Convert JSON into well-formed XML.
- JSON Diff - Compare two JSON documents line by line.
- XML Formatter - Pretty-print, collapse, or minify XML.
- XML to JSON - Convert XML documents into JSON.
- TOML / YAML / JSON Converter - Convert between TOML, YAML, and JSON.
- CSV to Markdown - Turn CSV data into Markdown tables.
- JS Minifier - Minify JavaScript by stripping comments and whitespace.
- HTML Minifier - Compress HTML by removing comments and whitespace.
- CSS Beautifier - Reformat minified or messy CSS into readable rules.
- SQL Formatter - Pretty-print SQL with configurable casing and indent.
- Markdown Previewer - Live-render GitHub-flavored Markdown side by side.
- Markdown to HTML - Convert Markdown into clean HTML.
- HTML to Markdown - Convert HTML into clean Markdown.
- HTML Entity Encoder - Encode and decode HTML entities.
- Code to Image - Render a code snippet as a shareable SVG card.
- Unit Converter - Convert length, weight, temperature, volume, and more.
- Percentage Calculator - Calculate percentages, ratios, and percent change.
- Tip Calculator - Split bills and calculate tips for any group size.
- Scientific Calculator - Evaluate expressions with trig, logs, and powers.
- Bitwise Calculator - AND, OR, XOR, NOT, shifts, and arithmetic on integers.
- Statistics Calculator - Mean, median, mode, standard deviation, and more.
- Roman Numeral Converter - Convert numbers to and from Roman numerals.
- Currency Converter - Convert between major world currencies.
- Compound Interest Calculator - Project compound growth with optional contributions.
- SIP Calculator - Project the future value of monthly investments.
- Tax Calculator - Add or extract sales tax and VAT from any amount.
- Password Strength Checker - Estimate password strength and crack time.
- Bcrypt Hash Generator - Hash and verify passwords with bcrypt.
- JWT Signer - Sign HS256 and HS512 JSON Web Tokens locally.
- Random Number Generator - Generate cryptographically strong random numbers.
- Random Color Generator - Generate random colors in HEX, RGB, or HSL.
- CIDR / Subnet Calculator - Compute network, broadcast, mask, and host range.
- IP Address Info - Inspect IPv4 and IPv6 addresses with details.
- HTTP Request Tester - Send GET, POST, PUT, DELETE requests and inspect responses.
- Barcode Generator - Generate barcodes in CODE128, EAN, UPC, and more.
- Fake Data Generator - Generate names, emails, UUIDs, and other sample data.
- CSS Gradient Generator - Build linear and radial CSS gradients visually.
- WCAG Contrast Checker - Test color contrast against WCAG AA and AAA.
- Color Palette Generator - Build harmonious palettes from any base color.
- Favicon Generator - Create favicons in every standard size from one image.
- Image Resizer - Resize images by dimensions or percentage.
- Image Format Converter - Convert between PNG, JPEG, and WebP.
- EXIF Metadata Viewer - Inspect EXIF data from JPEG and TIFF images.
- Image to Base64 - Convert images to Base64 data URIs.
- BMI Calculator - Calculate Body Mass Index from height and weight.
- Calorie Calculator - Estimate BMR, TDEE, and daily macros.
- Time Zone Converter - See one moment across major world time zones.
- Pomodoro Timer - Focus in 25-minute sprints with structured breaks.
- Countdown Timer - Count down to any future date and time.
Technology
Hasare is built with modern web technologies including Astro, React, and TypeScript. We use client-side JavaScript libraries for all data processing, ensuring your data stays on your device.
Contact Us
Have questions, feedback, or suggestions for new tools? We'd love to hear from you!
Email: support@hasare.com