HTML Vault securely encrypts any file or text you input, using modern web technologies. This means that your text is never sent to a server and is processed entirely in your browser. Therefore, you don't trust my server with handling any of your private files. You also get a completely portable, self-contained HTML file that is capable of handling the decryption on any computer with a modern browser.
In HTML Vault, you can download files in two modes, normal and lite mode. Normal mode includes styling and whitespace, which could be considered bloat. Lite has no styling and minimal whitespace.
Unfortunately, I cannot help as my server has no part in the password process.