MU Tools is a free, no-signup collection of 80 utilities for image, video and audio editing, PDF work, text processing, color design, web analysis and data conversion. Files you open are processed on your device, not on a server.
What is MU Tools?
MU Tools is an online toolkit at my-util.com that works right from your browser — no signup or install required. Its 80 tools are organized into 11 categories: Image, Video, Audio, PDF, Text, Encoding, Color & Design, Web analysis, Data conversion, Calculation, and Other. Image, video, audio and PDF files are processed locally and never leave your device. Every tool is free for both personal and commercial use.
Key Features
- Local file processing — Image, video, audio and PDF files are never uploaded. Only the web analysis tools (URL, domain and IP lookups) and the color picker's image-URL option send requests through a server.
- No signup or install — Open any tool and use it right away on desktop, tablet or smartphone.
- 80 tools in 11 categories — From image compression and AI background removal to video trimming, audio conversion, PDF signing, JSON formatting and structured data checks.
- Video and audio without uploads — Compress, convert, trim, merge and change the speed of video and audio files using your browser's built-in WebCodecs.
- Free for commercial use — No paid plans, no watermarks.
- 9 languages — English, Japanese, Simplified Chinese, Traditional Chinese, Korean, Indonesian, Spanish, Brazilian Portuguese and German.
- Browser extension — A launcher for Chrome and Edge to open any tool in one click.
Who is it for?
- Web developers — JSON formatter, regex tester, cron builder, JWT decoder, UUID generator, favicon generator, CSS gradient and shadow generators.
- Content creators & social media managers — Trim and crop video to 9:16, make GIFs, remove image backgrounds, compress audio, generate QR codes.
- Designers — Color picker, palette generator, WCAG contrast checker, Tailwind color scale generator.
- SEO specialists — Meta tag and OGP checks, heading extraction, broken link checker, structured data checker, robots.txt tester.
- Office workers — Merge, split and sign PDFs, convert HEIC photos, count characters, calculate dates and percentages, convert time zones.
What can you do with MU Tools?
- Shrink image, video and audio files — compress JPG/PNG, MP4 and MP3 without uploading them.
- Remove image backgrounds with AI — download a transparent PNG or swap in a solid color.
- Edit video and audio — trim, merge, crop, change speed, volume or pitch, and extract audio from video.
- Work with PDFs — merge up to 10 files, split by page range, add signatures and annotations, or convert to images.
- Format, test and convert data — JSON, regex, CSV ⇄ JSON, Base64, hashes, UNIX timestamps.
- Audit web pages — check meta tags, OGP, headings, broken links, structured data and robots.txt.
- How does it work?
- Open any tool, drop in a file or paste your input, and get the result immediately. Image, video, audio, PDF and text processing happens on your device. Tools that look up external information (URLs, domains, IP addresses) send a temporary request through a server to fetch public data.
Pricing
MU Tools is completely free. No tiers, no paid plans.
FAQ
Is MU Tools free?
Yes. Every tool is free for personal and commercial use, with no signup.
Are my files uploaded to a server?
No. Image, video, audio and PDF files are processed locally in your browser. The only exceptions are tools that look up external information (URLs, domains, IP addresses), which send a temporary request through a server.
What languages are supported?
The site and every tool are available in nine languages: English, Japanese, Simplified Chinese, Traditional Chinese, Korean, Indonesian, Spanish, Brazilian Portuguese and German.
Do I need to install anything?
No. Everything works right from your browser on desktop, tablet and smartphone. An optional launcher extension is available for Chrome and Edge.
Can I use the tools commercially?
Yes, with no extra steps or fees.
