Convert text and files to/from Base64 encoding with image preview and data URI support.
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII text. It's commonly used for embedding images, fonts, and files in HTML, CSS, and JSON.
URL-safe encoding replaces + with - and / with _ to make Base64 strings safe for URLs and filenames. Padding = characters are also removed.
Base64 encoding increases data size by approximately 33% (4:3 ratio). This is the trade-off for text-safe binary data transmission.
<img src="data:image/png;base64,iVBORw0KG..." />background-image: url(data:image/svg+xml;base64,PHN2Zy...);{ "file": "SGVsbG8gV29ybGQ=" }Hop to nearby dev utilities without losing context.
Quick steps so you can get results fast.
Input text, code, or payloads directly. Most tools auto-detect format and encoding.
Choose the transform—format, validate, convert, or decode. Defaults match the current tool.
See live output alongside the input so you can spot issues before copying.
Copy results to clipboard or export when available. No signup needed.
Everything you need to know about Base64 Converter.
Answers to the most common devtool questions.
Most dev tools run entirely in your browser. For tools that need server help, requests are encrypted.
No. Inputs are kept in-memory in your session. Nothing is logged for formatting or validation tools.
Yes. Common shortcuts like Ctrl/Cmd + A/C/V work. Some tools also support Ctrl/Cmd + Enter to run.
We preserve semantics. Converters and formatters avoid altering values, only structure and spacing.
Use the feedback link in the header or share a sample payload. We typically patch fixes within a day.