---
title: "Discussion on \"Base64 Is Not Encryption: Size Overhead, Data URIs, URL-Safe Variants and Common Bugs\" | Hashnode"
description: "Discussion on \"Base64 Is Not Encryption: Size Overhead, Data URIs, URL-Safe Variants and Common Bugs\". What Base64 really does, what it costs, and the mistakes that break it in production"
url: "https://hashnode.com/posts/base64-is-not-encryption-size-overhead-data-uris-url-safe-variants-and-common-bugs/6af2a7d7b773795e2e142564"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [Base64 Is Not Encryption: Size Overhead, Data URIs, URL-Safe Variants and Common Bugs](https://toolsphare-dev-2026.hashnode.dev/base64-is-not-encryption-size-overhead-data-uris-url-safe-variants-and-common-bugs?utm_source=hashnode&utm_medium=feed)

What Base64 really does, what it costs, and the mistakes that break it in production

1d ago · 7 min read · toolsphare-dev-2026.hashnode.dev  
Read the article

-   [#base64](https://hashnode.com/tag/base64)
-   [#javascript](https://hashnode.com/tag/javascript)
-   [#web-development](https://hashnode.com/tag/web-development)
-   [#security](https://hashnode.com/tag/security)
-   [#encoding](https://hashnode.com/tag/encoding)

## Written by

[Muhammad Wasim](https://hashnode.com/@toolsphare)

@toolsphare

  
[View profile](https://hashnode.com/@toolsphare)

Founder of ToolSphare; privacy-minded free developer and productivity utilities.

I build ToolSphare, a privacy-minded collection of free browser utilities for developers and everyday workflows.

## Responses

Markdown supported · ⌘↵ to post

No responses yet.