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Encoders · 4 min read

How to Encode and Decode Base64, URL & HTML Online

One encoder toolbox for everyday web work: Base64, percent-encoding, and HTML entities — encode or decode in a click.

Step-by-step

  1. 1

    Open Encoders

    Go to Tools → Encoders.

  2. 2

    Pick a mode

    Choose Base64 / URL / HTML encode or decode.

  3. 3

    Paste input

    Replace the sample with your text.

  4. 4

    Run and copy

    Click Run, then Copy output. Use Swap to flip encode ↔ decode.

Overview

Encoders combine Base64 encode/decode, URL encode/decode, and HTML encode/decode. Paste input, pick a mode, run, and copy — useful for APIs, query strings, and escaping markup.

Base64 embeds binary or text in ASCII (data URLs, tokens). URL encoding makes text safe for query strings. HTML encoding escapes <, >, and & so they display as text instead of markup.

Which encoding do I need?

Base64 embeds binary or text in ASCII (data URLs, tokens). URL encoding makes text safe for query strings. HTML encoding escapes <, >, and & so they display as text instead of markup.

Common use cases

People search for base64 encode decode online when they need a fast result without installing software. Encoding a small string for a data URL. Fixing broken query parameters with spaces and symbols. Escaping user text before inserting into HTML templates.

wikawe handles these scenarios in seconds — open the tool, paste or upload, and copy the result. No account required.

Why browser-only processing matters

Many free online converters paste your code, images, or designs to a remote server. That is a poor fit for unpublished UI, API payloads, or personal photos.

wikawe utility tools run in your browser with JavaScript. Nothing is stored on our servers — open the tool, work locally, and copy or download the result.

Troubleshooting tips

If a result looks wrong, refresh and try a smaller sample first. Clear the field and paste again to rule out hidden characters.

Use an updated Chrome, Edge, Safari, or Firefox. For image tools, very large files may need more memory — close unused tabs first.

Pro tips

  • Invalid Base64 decode will show a clear error — check padding.
  • URL encode is for query/path safety, not for hashing or encryption.
  • Pair with Image to Base64 when embedding images.

Frequently asked questions

Does wikawe upload my data to a server?+

No. Formatting, conversion, and generation run in your browser. Your inputs stay on your device (currency rates use a short public rates request only).

Is Base64 encryption?+

No. Base64 is encoding only — anyone can decode it.

Unicode support?+

Yes for typical web text; very large inputs may be slower in-browser.

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