Base64 Text Encoder & Decoder

Supports standard Base64 and URL-Safe modes with full UTF-8 multilingual compatibility

100% Traitement Local par le Navigateur: Zéro Transfert dans le Cloud - Utilisable Hors Ligne

Encoder100% Traitement Local par le Navigateur

Mode URL-Safe (RFC 4648)

Entrez le texte brut ou la chaîne Base640 字元

Résultat

Pure client-side Base64 text encode and decode tool supporting UTF-8 Chinese characters and RFC 4648 URL-safe mode.

Foire Aux Questions

What is the difference between standard and URL-Safe Base64?

Standard Base64 uses + and /, which can cause issues in URLs. URL-Safe Base64 replaces them with - and _ and omits padding.

Why do some Base64 decoders produce garbled characters with Unicode text?

Native browser atob only handles Latin1 characters. This tool utilizes TextEncoder/TextDecoder for proper UTF-8 handling.

Accurate word count, character statistics, paragraph analysis, and reading time estimation

Accurate calculations for brokerage discounts, transaction tax, ROI, and break-even stock prices

Automatically applies 0.15% halved transaction tax with +/- 5 tick profit simulations

Applies 0.1% preferential ETF transaction tax rate for cost and DCA calculations

Fast bidirectional calculation of 5% VAT sales tax and gross/net amounts compliant with MOF rules

One-click conversion of numbers to standard formal Chinese financial characters for fraud prevention