Test it. Fix it.
Free tools to test and fix everyday tech problems
Clean messy text, check your mic or webcam, fix broken JSON, look up DNS. Everything runs in your browser. No sign-up, nothing uploaded.
Start with the problem
- Messy text? Clean, compare, convert and count text. 20 tools.
- Broken JSON? Format JSON, decode Base64 and URLs, and strip HTML. 4 tools.
- Mic, speakers, camera, keyboard, mouse or screen acting up? Test your mic, speakers, camera, keyboard, mouse, controller and screen in seconds. 8 tools.
- Internet or Wi-Fi trouble? Find your ISP, check DNS, look up MAC addresses and fix Wi-Fi. 4 tools.
- Website or email misbehaving? Check email records and headers, and fix hosting, SSL and WordPress. 2 tools.
Most-used tools
- Case Converter Switch text between Sentence case, lower, UPPER and Capitalized Case.
- DNS Lookup Check A, MX, TXT and other records, with plain-English fixes.
- Invisible Character Remover Find and remove zero-width spaces and other hidden characters.
- JSON Formatter Format, validate and repair JSON, with the exact line of every error.
- Keyboard Tester See which keys work, and catch double typing, stuck keys and ghosting.
- Microphone Test See your mic level, record a clip and fix mic problems.
- Remove Duplicate Lines Delete repeated lines from a list, or find the duplicates.
- Remove Line Breaks Fix text copied from PDFs and emails that breaks mid-sentence.
- Speaker Test Check left and right speakers or earbuds and fix one-sided sound.
- Webcam Test See your camera, its resolution and frame rate, and fix camera problems.
- Word & Character Counter Count words and characters, and check limits for X, Instagram and more.
When a tool isn't enough
- How to Change Your WordPress Site Title and Tagline Hosting guide
- How to Connect a Domain to Cloudways (Step by Step) Hosting guide
- How to Install a WordPress Plugin (Step by Step) Hosting guide
- How to Restart Your Router the Right Way Home Wi-Fi guide
- How to Install SSL on Cloudways (Free Let’s Encrypt Certificate) Hosting guide
- iPhone Shows “Weak Security” on Wi-Fi? Here’s the Easy Fix Home Wi-Fi guide
Why QuickFixBase
- Private by design. Your text, files and camera feed stay on your device.
- Free. No sign-up, no limits, no watermarks.
- Tested fixes. Every guide is tried on real devices before it's published.
New and updated
- Alphabetizer Tool · October 26, 2026
- Gamepad Tester Tool · October 26, 2026
- Invisible Character Remover Tool · October 26, 2026
- Keyboard Tester Tool · October 26, 2026