Base64 Encoder
Encode text, files, and images to Base64 format instantly β 100% client-side
Click or drag & drop a file
Supports images, PDFs, documents (Max 10MB)How to Use Base64 Encoder
Encode text, images, and files to Base64 format β the complete guide
β‘ Encode to Base64 in 3 Simple Steps
Choose Your Input Type
Switch between Text mode for encoding strings, or File/Image mode for encoding documents, images, or any binary file.
Enter Your Content
Type or paste your text, or upload a file by clicking the upload area. Files up to 10MB are supported β images, PDFs, documents, etc.
Encode & Copy
Click Encode to Base64 to convert your content. Then use the Copy button to save the Base64 string to your clipboard.
Base64 encoding is a method of converting binary data into ASCII text format. It's essential for embedding images directly into HTML/CSS, transmitting data in APIs, and storing binary data in JSON or XML.
Common use cases include: embedding images in HTML (<img src="data:image/png;base64,...">), storing binary data in databases, sending files via JSON APIs, email attachments, and data URIs. Base64 is universally supported across all programming languages and platforms.
Our free Base64 encoder tool works entirely in your browser β no data is ever sent to any server. Your sensitive information, files, and images stay completely private and secure.
β Everything You Need to Know About Base64
Base64 encoding converts binary data (like images, files, or special characters) into plain ASCII text. It's used for embedding images in HTML/CSS, transmitting binary data over text-based protocols like JSON/XML, storing binary data in databases, and email attachments. Base64 makes binary data safe for text-only transmission.
After encoding an image with our tool, copy the Base64 string and use it like this: <img src="data:image/png;base64,YOUR_BASE64_STRING">. This embeds the image directly into your HTML β no external file needed. Great for emails, single-file pages, and SVGs.
You can encode any file type β images (PNG, JPG, GIF, SVG, WebP), documents (PDF, DOCX, TXT), audio files, videos, and more. The tool supports files up to 10MB. The encoded output can be stored or transmitted as a single string.
Absolutely! Our Base64 encoder works entirely in your browser using JavaScript. No files, images, or text are ever sent to any server. Your data stays on your device β making it perfect for sensitive information, private documents, and confidential images.
Yes, Base64 encoding increases file size by approximately 33%. This is because it converts 3 bytes of binary data into 4 characters of ASCII text. While this makes data transmission safe, it's less efficient for large files. Use it for small images, icons, or when direct embedding is needed.
Yes! Base64 is reversible. Use our Base64 Decoder tool to convert Base64 strings back to their original text or file format. This is useful for inspecting encoded data or recovering original content from Base64 strings.
100% free β no signup required! There are no hidden fees, no premium tiers, no watermarks. Encode unlimited text and files. We believe essential developer tools should be accessible to everyone.