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🔍 Decode Base64
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JPEG · PNG · WebP · GIF · SVG · BMP · Any image type
Whether you're embedding an icon in CSS, inlining a small image in HTML, or storing a thumbnail in JSON, converting an image to Base64 saves you an extra file and an extra HTTP request. I7 Pixel's converter does the encoding instantly, with no server involved.
From upload to copy-ready snippet in four straightforward steps.
A little know-how on when to use Base64 and when to avoid it goes a long way toward faster, cleaner pages.
A data URI embeds the image's binary data directly inside a string, prefixed with something like data:image/png;base64,. Browsers, CSS, and most markup languages can render this string exactly as if it were a normal file — without a separate network request. It's ideal for small icons, inline SVGs, and images bundled into JSON payloads or email HTML.
Base64 encoding increases file size by roughly 33% compared to the original binary, since it converts bytes into ASCII text. It's a good fit for small, frequently reused assets like icons or logos where saving an HTTP request matters more than the size increase. For large photos, stick to a linked file — the extra size and lack of browser caching outweigh the benefit.
Use WebP or JPEG for photos to keep the encoded string as short as possible, and reach for PNG or SVG when you need transparency or crisp vector lines. If you're pasting the output into code, the data URI tab gives you a value that's ready to drop straight into a src attribute or CSS url() — the raw Base64 tab alone won't render without that prefix.
Quick guide to which copy format fits each situation.
| Snippet | Format | Where it's Used |
|---|---|---|
| Raw Base64 | Plain string | Custom parsing, backend storage, API payloads that add their own prefix |
| Data URI Popular | data:image/...;base64,... | Direct paste into an <img src>, CSS url(), or browser address bar |
| HTML | <img> tag | Inline images in static HTML, email templates, documentation |
| CSS Popular | background-image | Small icons, background patterns, and sprites without an extra file |
| JSON | Key-value pair | API responses, config files, and app data that bundle an image inline |
| Markdown |  | READMEs and docs where you don't want to host a separate image file |
Embedding images as Base64 solves a specific problem — this tool covers every common scenario.
Answers to the most common questions about converting images to Base64 with this tool.
Yes — completely free. There are no limits, no accounts, no watermarks, and no charges. Convert as many images as you need.
You can upload JPEG, PNG, WebP, GIF, and SVG files. The tool reads the file directly in your browser, so any format supported by your browser works without server processing.
No — never. All encoding uses the FileReader and Canvas APIs locally in your browser. Your photos never leave your device, so personal or sensitive images remain completely private.
The raw Base64 string is just the encoded image data. A data URI adds a prefix like data:image/png;base64, in front of it, so it can be used directly as a src attribute or CSS url() value.
Yes. Switch to the Snippets tab to get ready-to-use HTML <img> tags, CSS background-image rules, JSON key-value pairs, and Markdown image syntax.
Yes. Paste a raw Base64 string or a full data URI into the built-in decoder to preview it as an image instantly, along with its format and estimated file size.
Tried the tool? Leave a quick rating and help others find it.
All tools at I7 Pixel run in your browser — no uploads, no accounts, always free.