Browse Tools by Category
AI, image, document, video, audio, security, and utility tools — all free and online.
Video Tools
Audio Tools
Popular Tools
Most-used AI tools, converters, and utilities on ConvertMastery
Why Trust ConvertMastery?
- Transparent policies — clear Privacy Policy, Terms, and Disclaimer
- No hidden fees — core tools are free with no credit card required
- Responsible tools — security utilities include clear disclaimers and acceptable-use guidance
- Helpful content — every tool includes guides, FAQs, and related resources
Privacy-First Processing
Your privacy matters. Most conversions and compressions happen entirely in your browser. Files are not uploaded to our servers for standard image, video, and PDF tools.
When server processing is needed, files are handled securely and not stored permanently. Read our Privacy Policy for details.
All-in-One Conversion, AI & Privacy Tools
Convert images, videos, documents, and audio. Rewrite and summarize with AI. Plus security and utility tools — all in one place.
Optional Sign-In for Advanced Options
Tools work without an account. Sign in only if you want extra settings — files are never saved to our servers.
On-the-Fly Processing
Convert and download in your session. Nothing is stored in a database or My Orders.
Advanced Options
Optional sign-in unlocks watermarking, custom file names, format presets, and more.
Instant Download
Get your files immediately after processing. No account required for core tools.
Why Choose ConvertMastery?
Built for professionals who value speed, security, and simplicity
Lightning Fast
Process multiple files simultaneously with our optimized engine
100% Private & Secure
All processing happens locally in your browser. Your files never leave your device
Universal Format Support
Support for images, videos, documents, and audio in all major formats
No Upload Required
Zero data transmission. Everything processes client-side for maximum privacy
Batch Processing
Convert or compress multiple files at once to save time
Works Everywhere
No installation needed. Works on any device with a modern browser
Frequently Asked Questions
Yes. Core converters, PDF tools, and AI tools (paraphraser, summarizer, email writer, image upscaler) are free to use. AI text tools include a fair daily quota. Optional sign-in unlocks advanced settings only — we never store your files.
Most converters and the AI image upscaler process in your browser. AI text tools send only the text you paste to generate a response — files are not saved to a database or My Orders.
Free AI Paraphraser, AI Summarizer (text or PDF extract), AI Email Writer, AI Image Upscaler (browser-based), and Hermes AI chat.
Images (HEIC, JPG, PNG, WebP), videos (MP4, WebM), documents (PDF, DOCX), and audio (MP3, WAV, OGG), plus PDF and security utilities.
No. ConvertMastery runs entirely in your web browser on any modern device.
More guides in our Blog & Guides section.