Browse All Free Online Tools
51 tools for developers, designers, and digital professionals — all free, all run locally in your browser.
PDF Merge & Split
Free online PDF merger and splitter. Combine multiple files or extract pages. Secure, no signup required, 100% client-side processing.
PDF to Image
Free online PDF to Image converter. Transform PDF to JPG or PNG securely. High quality, no file limits, runs entirely in browser.
PDF Editor
Free online PDF editor. Edit, sign, and annotate PDFs securely in your browser. No watermark, no upload needed.
PDF Compress
Free online PDF compressor. Reduce document size without quality loss. Secure, private, and runs entirely in your browser.
Image to PDF
Combine JPG, PNG, or WEBP images into a single PDF document. Reorder pages, no watermark, 100% client-side.
PDF Password Protect & Remove
Add or remove password protection from PDF files securely in your browser. No upload, no server-side processing.
PDF Watermark
Stamp a text or image watermark across every page of a PDF. Free, secure, and runs entirely in your browser.
Image Editor & Cropper
Crop, resize, rotate, flip, and add watermarks to images online. Secure, client-side processing.
Image Metadata Remover
Remove EXIF, GPS, and device metadata from photos. Lossless for JPEG, secure client-side cleaning.
Bulk Image Compressor
Compress JPG and PNG images online, one at a time or in bulk. Free, no watermark, 100% client-side.
Bulk Image Format Converter
Convert images between JPG, PNG, and WEBP online, one at a time or in bulk. Free, secure, client-side processing.
Favicon Generator
Convert images to favicons in multiple sizes with HTML tags. Secure, client-side generation.
Image to Pixel Art
Convert images to aesthetic pixel art, emoji mosaics, and edge-sketches. Customizable, fun, and runs 100% client-side.
Mock Data Generator
Generate realistic fake data instantly. Export as JSON, CSV, YAML, TOML, or TOON completely offline.
Base64 Encoder / Decoder
Encode or decode text and files to Base64 format instantly. Secure, client-side processing.
Text Hash Generator
Generate MD5, SHA-1, SHA-256 & more hashes from text. Secure, client-side processing.
File Hash Generator
Generate MD5, SHA-1, SHA-256 & more hashes from files. Secure, client-side processing.
Encrypt / Decrypt Text
Encrypt or decrypt text using AES, DES, TripleDES & more. Secure, client-side encryption.
Random Password Generator
Create strong, random passwords with configurable character sets and length. Secure, client-side.
Password Entropy & Time-to-crack Estimator
Estimate password entropy in bits and time-to-crack given guess rates. Secure, client-side analysis.
Password Transformer (Leet)
Apply transformations (leet speak) to a base password to generate variants. Secure, client-side.
File Encrypt / Decrypt
Encrypt or decrypt files securely in your browser with AES encryption. Secure, client-side processing.
URL Analyzer
Comprehensive URL analysis with parameter editor and validation. Secure, client-side processing.
Hash Identifier
Identify unknown hashes offline based on length, character set, and format. Supports MD5, SHA-256, bcrypt, and more.
QR Code Generator
Create customizable QR codes with logos, colors & custom designs. Secure, client-side generation.
Barcode Generator
Generate various barcode formats (EAN, UPC, Code 128, etc.) for print or digital use. Secure, client-side.
Link Preview & Meta Tags
Scrape link previews and generate social media meta tags instantly. Free meta tag generator. Privacy-focused. No data stored on server.
URL Redirect Checker
Trace redirect chains and detect redirect loops instantly. Free redirect checker. Privacy-focused. No data stored on server.
UTM Parameter Builder
Create campaign tracking URLs with UTM parameters for Google Analytics. Secure, client-side generation.
Online Notepad
Rich text notepad with auto-save to browser storage. Format text, create lists, and download notes locally.
Meta Tags Generator
Generate SEO-friendly meta tags with Open Graph and Twitter Cards. Secure, client-side generation.
Robots.txt Generator
Create robots.txt files to control search engine crawling. Secure, client-side generation.
Favicon Generator
Convert images to favicons in multiple sizes with HTML tags. Secure, client-side generation.
XML Sitemap Generator
Create sitemap.xml instantly for Google & Bing. No signup required. Secure, client-side generation.
Keyword Density Analyzer
Analyze keyword frequency and density in your content for SEO. Secure, client-side analysis.
Title & Description Checker
Optimize page titles and meta descriptions for SEO & click-through rates. Secure, client-side analysis.
Structured Data Generator
Generate JSON-LD structured data for rich snippets & enhanced search results. Secure, client-side generation.
SSL Certificate Checker
Verify SSL/TLS certificate validity, expiration & security issues. Free SSL checker. Ensure website security.
Website Security Audit
Security analysis with PDF export: Mozilla Observatory, Security Headers, CSP Evaluator. Identify vulnerabilities & export reports.
JSON to TOON Converter
Convert JSON to Token-Oriented Object Notation format for token analysis. Secure, client-side conversion.
TOON to JSON Converter
Reconstruct JSON from TOON format with automatic formatting. Secure, client-side conversion.
TOON Validator & Linter
Validate TOON format structure and syntax against the spec, and identify issues. Secure, client-side validation.
Token Count & Cost Estimator
Free online token counter and cost estimator for GPT-4, Claude, and Gemini. Secure, client-side analysis with no login required.
JSON Formatter & Validator
Format, validate, minify, and beautify your JSON data securely in your browser.
JWT Decoder & Debugger
Decode, verify, and debug JSON Web Tokens entirely in your browser.
JSON to CSV Converter
Convert JSON arrays and objects to CSV format. Supports nested object flattening.
Timestamp / Epoch Converter
Convert Unix timestamps to readable dates, and readable dates to Unix timestamps instantly.
UUID / ULID / NanoID Generator
Instantly generate standard UUIDs, sortable ULIDs, or compact NanoIDs in bulk. 100% secure client-side generation.
YAML ↔ JSON ↔ TOML Converter
Convert data instantly between YAML, JSON, and TOML. Works entirely in your browser with smart auto-detection.
Markdown Editor
Write and preview Markdown in real-time. Free online editor with secure, client-side processing.
Diagram-as-Code (Mermaid)
Write, preview, and export Mermaid.js diagrams instantly. Modern, lightweight Diagram-as-Code editor with local auto-save and zero server overhead.