How it works
Paste a URL or query string and encode/decode percent-escapes locally for safe use in links and APIs.
Encode or decode URL strings safely in the browser.
Plain text / URL part
Encoded output
Paste a URL or query string and encode/decode percent-escapes locally for safe use in links and APIs.
Conversions run in your tab with JavaScript — no desktop app required.
Files stay on your device during processing. We do not receive your uploads.
Heavy codecs and AI models run locally via Web Workers and WASM (FFmpeg.wasm, Transformers.js).
Paste a URL or query string and encode/decode percent-escapes locally for safe use in links and APIs.
Does not validate full URI schemes or IDN homographs. Binary data should use dedicated encoders. Processing is 100% offline in your browser — files never leave your device.
Yes. This tool is free convert online with no signup. Processing stays in your browser — no uploads.
You control quality settings. Choose higher quality for no quality loss when converting online.
Every conversion runs inside your browser tab using JavaScript and Web Workers. There is no background server queue and no account is required for core tools.
Your files are never uploaded to FreeConvertKit for processing. Originals, previews, and exports stay on your device unless you choose to download or share them yourself.
When codecs or AI models are needed, WebAssembly modules such as FFmpeg.wasm and Transformers.js execute locally — giving you desktop-class power with absolute file privacy.
Convert Markdown to HTML with raw source and live preview.
UPPERCASE, lowercase, Title Case, Sentence case, and camelCase.
Count words, characters, paragraphs, and reading time in real time.
Strip line breaks, extra spaces, and empty lines from pasted text.
Encode UTF-8 text to Base64 or decode strings locally.