Free Online Developer Tools
21 browser-based developer tools and 9 professional PDF converters all free. Password generator, JSON formatter, QR code creator, JWT decoder, Word to PDF, Excel to PDF, PowerPoint to PDF and more.
All Tools30 available
Password Generator
Generate cryptographically secure passwords with custom length, uppercase, lowercase, numbers and symbols. Includes strength meter and crack time estimate.
strong password generator, secure random password
Open Tool →QR Code Generator
Create QR codes for URLs, text, email, phone, Wi-Fi and more. Choose from multiple sizes and color themes. Download as PNG, SVG or PDF.
qr code generator free, create qr code online
Open Tool →JSON Formatter
Beautify, minify, validate and auto-repair JSON. Tree view with collapsible nodes, custom indentation and syntax error detection.
json formatter online, json beautifier, json validator
Open Tool →SQL Formatter
Format and beautify SQL queries. Supports MySQL, PostgreSQL, SQLite, T-SQL, BigQuery and MariaDB dialects with keyword case control.
sql formatter online, sql beautifier, format sql query
Open Tool →Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 back to plain text. Handles JWT tokens natively. Supports URL-safe Base64.
base64 encode online, base64 decode online
Open Tool →URL Encoder / Decoder
Encode and decode URL components, full URLs and query strings. Includes query string builder and percent-encoding reference table.
url encode online, url decode online, percent encoding
Open Tool →URL Shortener
Shorten long URLs to clean short links. Set custom aliases, track click counts and generate QR codes per link.
url shortener free, shorten url online
Open Tool →Text Case Converter
Convert text to camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, Title Case and more. Live re-conversion with word and character stats.
text case converter, camelcase to snake_case
Open Tool →Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 hashes from any text or file. Includes HMAC-SHA256 and hash comparison tab.
sha256 hash generator, md5 generator online
Open Tool →JWT Decoder
Decode JSON Web Tokens and inspect header, payload and all claims. Live expiry countdown and security warnings for weak algorithms.
jwt decoder online, decode jwt token
Open Tool →Regex Tester
Test regular expressions with live match highlighting, flag toggles, captured group inspector, replace mode and a 10-pattern cheatsheet.
regex tester online, regular expression tester
Open Tool →Word Counter
Count words, characters, sentences and paragraphs instantly. Reading time estimate, keyword density and export options included.
word counter online, character counter free
Open Tool →Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text in paragraphs, sentences or words. Styles include Classic, Tech, Business and Casual with HTML output.
lorem ipsum generator, placeholder text generator
Open Tool →Timestamp Converter
Convert Unix timestamps instantly. Supports Unix seconds, milliseconds, ISO 8601, SQL DateTime and multiple timezone formats with real-time clock.
unix timestamp converter, epoch converter online
Open Tool →Color Picker
Create color palettes, tints, shades and gradients for UI design and branding. Real-time previews, harmony suggestions and export options.
color picker online, hex color picker, color palette
Open Tool →CSV to SQL
Convert CSV files to SQL INSERT statements instantly. Paste data or upload CSV, TSV, TXT or Excel files to generate clean queries for any database.
csv to sql converter, csv to insert statements
Open Tool →HTML to Markdown
Convert HTML to clean Markdown instantly. Supports GitHub Flavored Markdown, tables, code blocks and live preview for accurate formatting.
html to markdown converter, html to md online
Open Tool →Code Formatter
Format JavaScript, TypeScript, HTML, CSS, JSON and XML instantly. Syntax highlighting, minify option and side-by-side diff view.
code formatter online, js formatter, html beautifier
Open Tool →API Tester
Test and debug REST APIs in your browser. All HTTP methods, authentication management, JSON tree response view and cURL export.
api tester online, rest api tester, test api in browser
Open Tool →Image to Base64
Convert PNG, JPG, SVG, WebP images to Base64 Data URL, HTML img tag, CSS background or JSON. Batch convert multiple files entirely in your browser.
image to base64 converter, png to base64 online
Open Tool →Diff Checker
Compare two versions of text or code side-by-side. Word-level inline diff, split and unified view, ignore whitespace and export diff.
diff checker online, text compare tool, code diff
Open Tool →JPG → PDF
Convert JPG images to a PDF document. Combine multiple images, choose page size and orientation. 100% browser-based, no upload.
jpg to pdf converter, jpeg to pdf free
Open Tool →PNG → PDF
Convert PNG images to PDF with transparency preserved. Combine multiple PNGs into one PDF. Browser-based, no upload.
png to pdf converter, transparent png to pdf
Open Tool →Image → PDF
Convert JPG, PNG, WebP, GIF, BMP and SVG images to PDF. Combine multiple images. Pixel-perfect quality. 100% browser-based.
image to pdf converter, pictures to pdf free
Open Tool →TXT → PDF
Convert plain text files to PDF. Selectable and searchable text output. Custom font, size, margins, line numbers. Browser-based, no upload.
txt to pdf, text file to pdf converter
Open Tool →SVG → PDF
Convert SVG vector graphics to PDF. Retina 2× scale for crisp output. Fit SVG page mode. Multiple SVGs to one PDF. Browser-based, no upload.
svg to pdf converter, vector to pdf free
Open Tool →HTML → PDF
Convert HTML files to PDF using your browser native render engine. Full CSS, web fonts and tables preserved. Live preview. No upload.
html to pdf converter, webpage to pdf free
Open Tool →Word → PDF
Convert Word .docx files to PDF. Fonts, tables, images and headers preserved. Powered by TOOLBeans professional quality output.
word to pdf, docx to pdf converter free
Open Tool →Excel → PDF
Convert Excel spreadsheets to PDF. All cells, borders and charts preserved. Powered by TOOLBeans professional quality output.
excel to pdf, xlsx to pdf converter free
Open Tool →PowerPoint → PDF
Convert PowerPoint presentations to PDF. Every slide becomes a page. Powered by TOOLBeans professional quality output.
powerpoint to pdf, pptx to pdf converter free
Open Tool →Popular Tools
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Request a Tool →30 Free Tools Developer Utilities and PDF Converters
TOOLBeans offers 21 free online tools built for software developers, data engineers, DevOps professionals and anyone who works regularly with code, tokens or text data. Every tool runs entirely inside your browser using client-side JavaScript nothing you enter is ever sent to a server, making it safe to use real production data, live JWT tokens, actual passwords and sensitive files.
The security category includes a free password generator using the Web Crypto API, a hash generator supporting MD5, SHA-256, SHA-512 and CRC32, and a JWT decoder with live expiry countdown. The developer category covers an online JSON formatter, SQL formatter, regex tester, code formatter, diff checker and an API tester.
Utility and writing tools include a QR code generator that exports to PNG, SVG and PDF, a URL shortener with custom aliases, a Base64 encoder/decoder, color picker, CSV to SQL converter, word counter and more. All 21 tools are permanently free with no account required and no usage limit.