VNG Tool OS
AI tools and Omni utilities under one secure login.
A business-grade foundation for free tools people usually pay for: prompt systems, SEO helpers, content workflows, PDF utilities, media conversion, developer formatters, security tools, and finance calculators.
92
Total tools
50
Omni utilities
42
AI workflows
Free instant tools — no login, no upload
These run 100% in your browser. Nothing you type or upload ever leaves your device.
Password Generator
Strong random passwords via Web Crypto.
Open freeJSON Formatter & CSV Converter
Format, minify, and convert JSON instantly.
Open freeQR Code Generator
Turn any link or text into a downloadable QR code.
Open freeImage Compressor & Resizer
Shrink and resize photos with the Canvas API.
Open freePDF Merge
Combine PDFs in your browser, in any order.
Open free92 tools matched
Academic
Case Converter
Convert text case: lower, upper, title, sentence, camel, snake, slug.
Academic
Citation Generator
Generate APA, MLA, or Chicago citations.
Academic
Lorem Ipsum
Generate placeholder paragraphs for mockups.
Academic
Text Diff / Plagiarism
Compare two texts and return similarity ratio.
Academic
Word Counter
Count words, characters, and characters without spaces.
Developer
Base64 Encode/Decode
Encode or decode Base64 text.
Developer
CSV to SQL
Generate INSERT statements from a CSV file.
Developer
CSV ⇄ JSON
Convert CSV to JSON or JSON array to CSV.
Developer
Color Converter
Convert between HEX, RGB, and HSL color formats.
Developer
Cron Scheduler
Get next execution times for a cron expression.
Developer
Dockerfile Generator
Generate a starter Dockerfile.
Developer
Fake Data Generator
Generate realistic fake people records for testing.
Developer
HTML to Markdown
Quick HTML to Markdown conversion.
Developer
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes.
Developer
JSON Formatter
Pretty-print or minify JSON.
Developer
JSON Schema Generator
Infer a JSON Schema from a sample JSON document.
Developer
JWT Decoder
Decode JWT payload without verifying signature.
Developer
Markdown to HTML
Render Markdown to HTML.
Developer
QR Code Generator
Create a QR code image.
Developer
Regex Tester
Test a regular expression and list matches.
Developer
SQL Minifier
Remove unnecessary whitespace from SQL.
Developer
Text Diff
Unified diff between two text blocks.
Developer
Timestamp Converter
Convert Unix timestamp ↔ ISO date.
Developer
URL Encode/Decode
URL-encode or decode text.
Developer
UUID Generator
Generate random UUIDs.
Developer
Unit Converter
Convert length, weight, time, data, and temperature units.
Developer
XML Formatter
Pretty-print or minify XML.
Developer
YAML ⇄ JSON
Convert between YAML and JSON.
Finance & Data
Currency Converter
Live currency conversion via Frankfurter (free fallback included).
Finance & Data
IBAN Validator
Validate IBAN check digits.
Finance & Data
Loan Calculator
Calculate EMI, total payment and interest.
Media
Compress Image
Reduce image file size by changing quality/format.
Media
Compress Video
Compress video using H.264 with adjustable CRF.
Media
Convert Image
Convert an image to another format.
Media
GIF Maker
Create an animated GIF from a set of images.
Media
MP4 to MP3
Extract audio from a video file using ffmpeg.
Media
Remove Background
Remove image background (AI if rembg is installed, else color-based fallback).
Media
Remove EXIF
Strip GPS/camera metadata from images for privacy.
Media
Resize Image
Resize an image to exact dimensions or thumbnail.
Media
Watermark Image
Add text watermark to an image.
PDF & Docs
Compress PDF
Reduce PDF size by re-compressing streams and dropping metadata.
PDF & Docs
Merge PDFs
Combine multiple PDFs into one file.
PDF & Docs
PDF OCR
Extract embedded text from a PDF.
PDF & Docs
PDF to Word
Extract text from a PDF and save it as a .docx file.
PDF & Docs
Split PDF
Extract selected pages, e.g. 1-3,5,7-10.
PDF & Docs
Unlock PDF
Remove owner password from a PDF.
PDF & Docs
eSign PDF
Overlay a signature image onto a PDF page.
Security
Password Generator
Generate a secure random password.
Security
Password Strength
Check entropy and strength of a password.
Security
Random Token
Generate a URL-safe random token.
Automation
Automation Idea Finder
Find workflows that can be automated with AI or RPA.
Automation
Zapier Workflow Planner
Map no-code automation steps and triggers.
Brand
Brand Voice Builder
Turn raw notes into a consistent voice guide.
Brand
Logo Brief Maker
Create logo and identity design briefs.
Business
Invoice Note Writer
Write professional payment and invoice messages.
Business
Pricing Page Helper
Structure pricing tiers and plan value.
Business
Proposal Builder
Generate client proposals for projects and retainers.
Career
Interview Question Maker
Generate role-specific interview questions.
Career
Job Description Writer
Write clear job descriptions for hiring.
Career
Resume Bullet Improver
Rewrite achievements with measurable impact.
Content
Blog Outline Maker
Turn a topic into a structured article plan.
Content
Content Brief Builder
Generate production-ready briefs for writers and designers.
Data
Data Dashboard Brief
Plan KPIs, charts, filters, and dashboard views.
Data
SQL Query Helper
Draft and explain SQL query patterns.
Design
Color Palette Generator
Generate accessible color systems for digital products.
Design
UI Copy Polisher
Improve labels, empty states, onboarding, and error messages.
Design
Wireframe Planner
Map screens, sections, and user flows before design starts.
Cold Email Writer
Draft direct outreach with personalization hooks.
Email Sequence Builder
Create nurture, launch, and onboarding sequences.
Engineering
API Endpoint Planner
Design endpoint names, payloads, and auth needs.
Engineering
Bug Report Writer
Convert messy notes into actionable bug reports.
Engineering
Release Notes Maker
Write readable release notes and changelogs.
Legal
Privacy Policy Outline
Plan privacy sections for review by counsel.
Legal
Terms Outline Builder
Draft a terms-of-service outline for legal review.
Marketing
Ad Copy Generator
Draft ad angles for Meta, Google, LinkedIn, and landing pages.
Marketing
CTA Generator
Create conversion-focused calls to action.
Marketing
Landing Page Auditor
Review conversion, clarity, SEO, and trust signals.
Product
App Feature Prioritizer
Rank features by impact, risk, and effort.
Product
Customer Journey Mapper
Map acquisition, onboarding, activation, and retention.
Product
PRD Generator
Draft product requirement documents for teams.
Product
User Persona Builder
Create practical personas from business context.
Prompting
AI Prompt Builder
Shape reusable prompts for websites, blogs, ads, and product workflows.
SEO
Meta Description Writer
Draft human-readable snippets that improve click-through.
SEO
SEO Title Generator
Create search-friendly titles for pages, articles, and product offers.
Social
Instagram Caption Maker
Write captions for launches, reels, and portfolios.
Social
LinkedIn Post Maker
Turn insights into polished posts.
Social
Thread Builder
Create concise educational social threads.
Support
FAQ Generator
Build helpful FAQs from product or service details.
Support
Knowledge Base Writer
Create documentation articles from rough notes.
Support
Support Reply Assistant
Draft calm, useful support replies.
Video
Thumbnail Idea Generator
Plan visual directions for social and video thumbnails.
Video
YouTube Hook Writer
Create high-retention openings for videos and shorts.