Text to Base64 Converter
Encode and decode Base64 instantly in your browser. Fast, secure, and completely free with full UTF-8 support.
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How to Convert Text to Base64 Online Free
Filator's free Base64 encoder converts text to Base64 format instantly in your browser—no server uploads, no limitations, no signup required. Unlike base64encode.org (100MB file limit + ads), base64.guru (server-side processing + ads), and cryptii (limited features), Filator processes everything locally with full UTF-8 support and zero restrictions.
Why Choose Filator's Base64 Converter?
⚡ No Length Limits
Encode text of any length with no arbitrary restrictions. Unlike base64encode.org which limits file uploads to 100MB, Filator processes text directly in your browser with memory as the only limit (typically handles megabytes easily).
🔒 100% Private & Secure
Your text never leaves your browser. All encoding happens locally using JavaScript, unlike base64encode.org and base64.guru which upload data to servers. Zero server upload risk means complete privacy.
🌐 Full UTF-8 Support
Encode any Unicode characters including emojis, Chinese/Japanese text, mathematical symbols, and special characters. Unlike ASCII-only tools, Filator handles all text properly with UTF-8 encoding.
♾️ Unlimited Conversions
Convert unlimited text with no usage caps, no daily limits, no ads blocking your view, and no premium upsells. Base64.guru shows ads; we don't. Completely free forever.
How to Encode Text to Base64 Step-by-Step
- 1.Paste or type your text into the encoder field (supports all Unicode characters including emojis)
- 2.Click "Encode" to instantly convert your text to Base64 format in your browser
- 3.Copy the Base64 output with one click using the "Copy" button
- 4.To decode, switch to the "Decode" tab, paste Base64 text, and click "Decode" to get the original text back
Filator vs Competitors Comparison
| Feature | Filator | Base64Encode.org | Base64.guru | Cryptii |
|---|---|---|---|---|
| Text Length Limit | Unlimited | 100MB (files) | Unspecified | Limited |
| Processing Location | Client-side | Server upload | Server-side | Client-side |
| Advertisements | None | Multiple ads | Google AdSense | One ad |
| UTF-8 Support | Full Unicode | Yes (UTF-8) | Yes | Yes |
| URL-Safe Encoding | Yes | Yes (Base64URL) | Not mentioned | Limited |
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). It's commonly used to encode data that needs to be transmitted over channels designed for text, such as HTTP headers, email, JSON, and XML. Base64 converts every 3 bytes of data into 4 ASCII characters, resulting in approximately 33% size increase.
Advanced Features
- • Bidirectional Conversion: Encode text to Base64 and decode Base64 back to text in the same tool
- • Full UTF-8 Support: Handles all Unicode characters including emojis, Chinese/Japanese text, and special symbols
- • URL-Safe Encoding: Option for URL-safe Base64 encoding (replaces + with - and / with _)
- • One-Click Copy: Copy encoded/decoded results to clipboard instantly with a single click
- • Batch Processing: Encode multiple lines of text at once for efficient bulk conversions
- • Real-Time Conversion: See results instantly as you type with live encoding/decoding
- • Cross-Platform: Works on Windows, Mac, Linux, iOS, and Android with any modern browser
- • Offline Support: Install as PWA to encode/decode Base64 without internet after initial load
Common Use Cases
🔐 API Authentication
Encode username:password combinations for HTTP Basic Authentication headers. Required for many REST APIs and web services.
📊 Data URLs
Create data URLs for embedding small files (text, images) directly in HTML, CSS, or JavaScript without external requests.
💾 Database Storage
Store binary data as text in databases that don't support blob types, or when you need text-based backup/transfer.
📧 Email Encoding
Encode special characters in email headers and content, ensuring safe transmission through SMTP servers.
Frequently Asked Questions
How do I convert text to Base64 online?
Simply paste your text into the encoder field and click "Encode". Your text is instantly converted to Base64 format in your browser. You can then copy the result with one click. All processing happens client-side with no server uploads.
Is Base64 encoding safe and private?
Yes, absolutely. Unlike base64encode.org and base64.guru which use server-side processing, Filator converts everything in your browser using JavaScript. Your text never leaves your device, ensuring complete privacy. There's zero server upload risk.
What is Base64 encoding used for?
Base64 encoding is commonly used for API authentication (Basic Auth headers), encoding data URLs, transmitting binary data in JSON/XML, email encoding, and storing binary data as text in databases. It converts binary data into ASCII text format for safe transmission.
Can I decode Base64 back to text?
Yes! Our tool provides both encoding and decoding. Simply switch to the "Decode" tab, paste your Base64 string, and click "Decode" to convert it back to readable text. Supports full UTF-8 including Unicode characters and emojis.
Does Base64 encoding increase text size?
Yes, Base64 encoding increases data size by approximately 33%. This happens because Base64 uses 6 bits per character instead of 8 bits. For example, "Hello" (5 bytes) becomes "SGVsbG8=" (8 bytes).
Is Base64 encryption or encoding?
Base64 is encoding, NOT encryption. Anyone can decode Base64 text back to the original content. It's designed for data transmission, not security. For encryption, use proper cryptographic methods like AES or RSA.
Can I encode special characters and emojis?
Yes! Filator supports full UTF-8 encoding, so you can encode any Unicode characters including emojis, Chinese/Japanese characters, mathematical symbols, and all special characters. Unlike some tools with ASCII-only support, we handle all text.
Are there any limits on text length?
No arbitrary limits. You can encode text of any reasonable length. Since processing is client-side, the only limit is your browser's memory. Most browsers can easily handle megabytes of text, far exceeding typical use cases.
Ready to Convert Text to Base64?
Start encoding and decoding Base64 instantly with no signup, no limitations, and complete privacy. Fast, secure, and completely free—with none of the ads or restrictions you'll find on base64encode.org or base64.guru. Try Filator now for truly unlimited Base64 conversion.