Private browser utilities · browser-local
Use ten private browser tools for random choices, QR codes, text counts, Base64, timers, voice recording, JSON, keyboard checks, and aim practice.
Work happens in the current browser. The route does not require an account or a server-side processing job.
Choose a task below. Each tool explains what to choose and what you get.
What it does
Browser compatibility
A modern JavaScript-enabled browser; specific optional APIs are described on each tool page.
Questions people ask
No. The supplied utilities perform their listed work in the current browser and do not include a content-upload path.
Voice Recorder asks for microphone access only after you choose to record. Other supplied Utility Lab tools do not need camera, microphone, or screen-capture permission.
No. Each route identifies optional browser APIs such as MediaRecorder, BarcodeDetector, Notifications, Wake Lock, Pointer Lock, or Intl.Segmenter and provides an honest fallback or limitation.
Open a focused browser utility when you need text formatting, QR work, timers, recordings, or a small everyday task completed locally. The chosen tool states whether it uses text, a file, browser interaction, or explicit device permission before the workflow begins. Review its local result and documented limitations before copying, downloading, or relying on it elsewhere.
| Need | Focused route | Why it matches |
|---|---|---|
| Validate, format or minify pasted JSON. | Format, validate, minify, and inspect JSON | The JSON route reports syntax, duplicates and copy-safe formatted output. |
| Convert Markdown and formatted HTML in either direction. | Markdown ↔ formatted HTML converter | The Markdown workspace keeps two synchronized, sanitized local representations. |
| Count words, characters and estimated reading time. | Count words, characters, sentences, and reading time | The counter produces deterministic text measurements without changing the input. |
Use ten private browser tools for random choices, QR codes, text counts, Base64, timers, voice recording, JSON, keyboard checks, and aim practice.
Choose a focused text, QR, timer, recording, or developer utility that runs in this browser.
Next step: Choose a related route when the input, output, or required workflow is different.
Selected file bytes and entered browser data remain in the current browser session and are not sent to an Aftermath processing service. How local processing is verified.
Checks the displayed limits and reports or creates a local utility result or report from text, a browser task, or explicit device permission.
A local measurement or export does not guarantee acceptance by an external destination.
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