My first technical blog post rendered half its code samples as actual HTML, a sample div tag became an invisible empty box instead of visible text. The browser was doing its job; I hadn’t told it my angle brackets were content, not markup. Every developer hits this the first time they publish code, and the fix takes ten seconds once you know it.
HTML entities are escape sequences: < for the less-than sign, > for greater-than, & for ampersand, " for quotes. Paste your code into the encoder and it converts every reserved character, so browsers display your snippet instead of executing it. Decoding reverses the process when you’re cleaning up content that got double-escaped somewhere along the way.
Try it now: open the free tool, runs 100{e0bed9560a59d6d3feee569f5ae3dad3ee14a646b3fccc2d16becbf099999e03} in your browser.
Contexts where this bites: CMS editors that ‘helpfully’ encode your embeds, email templates with tracking pixels, JSON payloads containing HTML, and user-generated content (encoding on output is also your first line of defense against cross-site scripting). My rule: encode at the boundary, store raw, encode when rendering. And if your page shows literal ‘<’ text, something encoded twice; decode once and move on.
Bottom line: encode reserved characters for display, encode user content for safety, store everything raw.
Your turn: use the tool free here, no signup, nothing leaves your device.
How do you use HTML Entity Encoder & Decoder?
Open the HTML Entity Encoder & Decoder in your browser (Escape HTML or decode entities with one click). Type or paste your input, adjust the options, and copy the result. Everything runs locally on your device with no account and nothing stored, so the three steps below take seconds even for confidential work.
- Paste or type the value you want converted into the input box.
- Pick the units or format you are converting between.
- Read the converted result and copy it with the copy button.
Try HTML Entity Encoder & Decoder free. It opens right in your browser.