The 15 tools everyone reaches for first
From quick calculations to daily dev work — these are the tools our users open most.
PDF Merge
Combine multiple PDF files into one document. Drag to reorder.
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JSON Formatter
Format, validate, and minify JSON with syntax highlighting.
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Regex Tester
Test regular expressions with real-time match highlighting.
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Password Generator
Generate strong passwords with custom length and character sets.
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QR Code Generator
Generate QR codes from text, URLs, WiFi, or contact info.
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PDF Split
Extract pages, split by ranges, or save each page as its own PDF.
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Tip Calculator
Calculate tip amount and split bills for any percentage.
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Base64 Encoder
Encode and decode Base64 with URL-safe variant support.
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UUID Generator
Generate UUID v4 identifiers instantly for testing and dev.
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Color Converter
Convert between HEX, RGB, HSL with color picker and palette.
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PDF Compress
Reduce PDF file size by removing metadata and optimizing structure.
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Markdown Preview
Live Markdown preview with GFM support, tables, and code blocks.
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Lorem Ipsum
Generate placeholder text in paragraphs, words, or bytes.
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Favicon Generator
Generate favicon.ico and app icons from any image.
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URL Encoder
Encode and decode URL components with special character handling.
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PDF, JSON, regex, QR codes, password generators, and 60+ more — all free, all private, all in your browser. No upload, no signup, no limits.
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60+ tools across 10 categories. Every tool is free, in-browser, and works on any device.
PDF Tools
Merge, split, compress, rotate, and convert PDFs — all 100% in your browser.
PDF Merge
Combine multiple PDF files into one document. Drag to reorder, 100% private.
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PDF Split
Extract pages, split by ranges, or save each page as its own PDF.
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PDF Rotate
Rotate all pages or individual pages by 90°, 180°, or 270°.
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PDF Watermark
Add a custom text watermark to every page. Font, color, opacity, position.
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PDF Compress
Reduce PDF file size by removing metadata and optimizing structure.
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Image to PDF
Convert JPG, PNG, WebP, or GIF images into a single PDF.
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PDF to Image
Convert each PDF page into a PNG, JPEG, or WebP image at any DPI.
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HTML to PDF
Write or paste HTML, see live preview, and download as a PDF.
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Dev Tools
Formatters, validators, minifiers, and encoders for daily dev work.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting.
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Regex Tester
Test regular expressions with real-time match highlighting.
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Base64 Encoder
Encode and decode Base64. Supports URL-safe Base64URL variant.
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Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
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URL Encoder
Encode and decode URL components with special character handling.
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SQL Formatter
Format and prettify SQL queries with syntax highlighting.
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HTML Minifier
Compress HTML by removing whitespace and optional tags.
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JSON to YAML
Convert JSON to YAML and vice versa with validation.
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YAML Validator
Validate YAML syntax with line-number error reporting.
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CSS Minifier
Compress CSS by removing whitespace, comments, and unused rules.
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JavaScript Minifier
Minify JavaScript for production deployment.
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XML Formatter
Format and validate XML with proper indentation.
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Generators
Passwords, UUIDs, slugs, lorem ipsum, mock data — generate anything.
Password Generator
Generate strong passwords with customizable length and characters.
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UUID Generator
Generate UUID v4 identifiers instantly for testing and dev.
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Lorem Ipsum
Generate placeholder text in paragraphs, words, or bytes.
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Slug Generator
Convert text to URL-friendly slugs with unicode support.
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Random String
Generate random strings with custom charset and length.
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Fake JSON Generator
Generate realistic mock JSON data for testing applications.
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Network Tools
IP lookups, URL parsing, DNS queries, and network diagnostics.
My IP Address
Reveal your public IPv4 and IPv6 address instantly.
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URL Parser
Parse URLs into protocol, host, port, path, query, and fragment.
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URL Shortener
Create shortened URLs from long links, entirely in your browser.
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Subnet Calculator
Calculate CIDR, network address, and host range for any IP.
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IP to Integer
Convert IPv4 to 32-bit integer and vice versa.
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DNS Lookup
Query A, AAAA, CNAME, MX, TXT, NS records for any domain.
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User Agent Parser
Parse browser User-Agent strings into OS, browser, device.
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Crypto Tools
bcrypt, AES encryption, Base32, htpasswd, and Morse code.
bcrypt Generator
Generate and verify bcrypt password hashes for secure storage.
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htpasswd Generator
Generate Apache htpasswd files for HTTP Basic Authentication.
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Morse Code
Encode and decode Morse code with audio playback support.
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Base32 Encoder
Encode and decode Base32 strings for DNS-safe identifiers.
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AES Encrypt/Decrypt
Encrypt and decrypt text using AES-256-CBC in your browser.
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Run Tools
Run code in your browser — Python, JavaScript, Lua, SQL, and more.
Python Runner
Execute Python code in your browser. Powered by Pyodide (Python 3.11 in WebAssembly).
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JavaScript Runner
Run JavaScript code instantly in a sandboxed Web Worker. 100% client-side.
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Lua Runner
Execute Lua 5.3 code in your browser. Powered by Fengari (pure JavaScript).
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SQL Runner
Run SQL queries against a pre-loaded SQLite database. Powered by sql.js (SQLite in WebAssembly).
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Regex Playground
Test regular expressions with live match highlighting and group details.
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Brainfuck Runner
Execute Brainfuck code with a pure JavaScript interpreter. Step limit protection included.
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Converters
Timestamps, number bases, colors, units — convert between formats.
Timestamp Converter
Convert between Unix timestamps and human-readable dates.
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Number Base Converter
Convert between binary, octal, decimal, and hexadecimal.
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Color Converter
Convert between HEX, RGB, HSL with color picker and palette.
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Unit Converter
Convert length, weight, temperature, and more units.
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Text Tools
Word counting, case conversion, diff checking, and Markdown preview.
Word Counter
Count words, characters, sentences with reading time estimate.
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Case Converter
Convert text between camelCase, PascalCase, snake_case, kebab-case.
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Diff Checker
Compare two texts side by side with highlighted differences.
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Markdown Preview
Live Markdown preview with GFM support, tables, and code blocks.
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Text Diff
Word-level and character-level text comparison tool.
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Finance Tools
Tip, mortgage, compound interest, and discount calculators.
Tip Calculator
Calculate tip amount and split bills. Works for any percentage.
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Mortgage Calculator
Calculate monthly mortgage payments including principal and interest.
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Compound Interest
Calculate how your money grows over time with compound interest.
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Discount Calculator
Calculate sale price and savings. Find the best deal when shopping.
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Image Tools
QR codes, favicons, and Base64 image conversion.
Recommended External Tools
Hand-picked tools we use and love but haven't built ourselves yet.
iLovePDF
PDF processing — merge, split, compress, convert PDF to/from Word, Excel, images.
Visit ↗
Photopea
Free online photo editor with Photoshop-level features. Layers, masks, filters — no download.
Visit ↗
Remove.bg
One-click AI background removal. Works on people, products, animals.
Visit ↗
TinyPNG
Smart lossy compression for PNG and JPEG. Reduce file size by up to 80%.
Visit ↗
Hemingway Editor
English sentence checker — highlights complex sentences, passive voice, adverbs.
Visit ↗
Speedtest
Test internet speed — ping, download, upload speed with real server data.
Visit ↗
WolframAlpha
Computational knowledge engine — math, science, statistics, geography, and more.
Visit ↗
Online Voice Recorder
Record voice in your browser, export to MP3, WAV, or OGG.
Visit ↗
CapCut Web
Free online video editor with AI tools — auto-captions, background removal, transitions.
Visit ↗
Why ToolsBase
Built for speed, privacy, and simplicity
No accounts. No tracking. No upload. Just tools that work.
100% private
Everything runs locally in your browser. Your files and data never touch a server.
Lightning fast
No upload or download wait. Your tools are ready the moment you open them.
Always free
No signup, no subscriptions, no per-tool fees. Just open and use.
Works everywhere
Desktop, tablet, or phone — ToolsBase is built mobile-first and works on any device.