Local processing
Your content stays in browser memory. Tool operations do not upload it.
● Processed locally, never uploaded
ONLINE DEVELOPER TOOLS
Free planUp to 5 MBFormat, validate, and convert data
Fast, private utilities that run entirely in your browser.
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Zero round trips: transformations run immediately on your device.
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Processed locally, never uploaded
FREE ONLINE DEVELOPER TOOL
Base64 Encode
Encode UTF-8 text as canonical Base64 locally for test payloads, transport fields, and embedded values. Your input is processed locally in the browser and is not uploaded to YourConvertor.
How to use Base64 Encode
- Paste the exact text to process with Base64 Encode.
- Check for unintended spaces, line breaks, or an incorrect source alphabet.
- Run Base64 Encode entirely in this browser.
- Verify the result in the receiving system before using it with production data.
Common uses
- Prepare HTTP Basic Auth components
- Embed small text payloads
- Create portable test values
Example input
你好，世界！Example result
WW91ckNvbnZlcnRvcg==Common mistakes
- Confusing encoding with encryption
- Using the wrong character encoding
- Adding accidental line breaks
Tips for reliable results
- Use a short known test value first to confirm the expected alphabet and character encoding.
- Check whether the receiving system expects raw text, a URL-safe variant, or padding.
- Avoid repeated encode or decode operations unless the source is intentionally layered.
Frequently asked questions
Is Base64 encryption?
No. Base64 is reversible encoding and provides no secrecy.
Is UTF-8 supported?
Yes. Text is encoded as UTF-8 bytes before Base64 conversion.
Why does the receiving system reject a result that looks correct?
Check character encoding, padding, URL-safe variants, line breaks, and whether the value was encoded more than once.
Does encoding protect sensitive information?
No. Reversible encodings only change representation. Use appropriate encryption and access controls for confidential data.
Does Base64 Encode upload my data?
No. Supported Base64 Encode processing runs locally in your browser.
What is the Web Free input limit?
The maximum input size is 5 MB per operation. For a larger input, reduce it to a representative sample or process it in smaller sections.
Base64 是傳輸編碼，不是加密
理解填補、體積膨脹與 Base64URL，才能可靠地編碼位元組。
應注意的失敗情況
直接編碼 Unicode code unit 會破壞非 ASCII 文字。
安全界線
不要把 Base64 稱為加密，也不要把編碼後的機密放入 URL。
閱讀完整範例、限制與檢查清單