Base64 Encoder & Decoder combines both directions in one page. Encode text with TextEncoder + btoa, or decode with atob + TextDecoder, then swap modes instantly.
Base64 Encode Decode
Base64 Encode / Decode
One tool for Base64 encode and decode with full UTF-8 support for Arabic, emoji, and symbols - fully local.
Loading tool…
Need AI study tools beyond encoding utilities? Try Studix free today.
No credit card required
What is this?
How it works
1. Choose Encode or Decode.
2. Paste text or Base64.
3. Convert locally in your browser.
4. Copy, download, or swap to the other mode.
Features
- Encode and decode in one tool
- Full UTF-8 support
- Format validity check for decode
- Swap between modes
Benefits
Handle Base64 text workflows without jumping between separate pages.
Trust & privacy
Your data is processed only in your browser. Studix does not upload or store it for this tool.
Frequently asked questions
No. Encoding and decoding run entirely in your browser.
Yes. Use Swap & switch mode after converting.
Free tools
Browse every free Studix preview — open any tool and try it instantly.
- HTML to Markdown
HTML to Markdown Free
Paste HTML or upload an .html file and get clean Markdown instantly. Everything runs locally in your browser.
- JSON Formatter
JSON Formatter Free
Paste messy JSON and pretty-print it with 2 spaces, 4 spaces, or tabs. Optional alphabetical key sorting - fully local.
- JavaScript Beautifier
Beautify JavaScript
Paste or upload messy JavaScript and format it with indent, brace style, and spacing options - powered by js-beautify, fully local.
- JSON to XML
JSON to XML Free
Paste or upload JSON and get indented XML with a custom root element - fully local.
- explanations
Explain Text with AI
Upload a sample document and explain it in minutes. This demo shows how StudixZone turns your study material into simple, detailed explanations — no signup required to explore.
- GPA Calculator
GPA Calculator Free
Calculate semester GPA from letter grades and credits, or convert scores to percentages — privately on your device.
- Markdown to PDF
Markdown to PDF Free
Write Markdown, preview it live, then download a PDF with page size, orientation, and page-number options - fully local.
- flashcards
Make Flashcards from PDF
Upload a sample document and create flashcards from it in minutes. This demo shows how StudixZone turns your study material into memorization cards with hints and explanations — no signup required to explore.
- Image to Base64
Image to Base64 Free
Upload PNG, JPG, GIF, WebP, SVG, or BMP and get a Data URL plus raw Base64 instantly - fully local.
- images
PDF to Study Infographics
Upload a sample document and create infographic templates from it in minutes. This demo shows how StudixZone turns your study material into visual study poster briefs from your notes — no signup required to explore.
- Markdown to Word
Markdown to DOCX Free
Write Markdown, preview it live, then download a .docx with your chosen font and size - fully local with Marked.js and docx.js.
- CSV to Markdown
CSV to Markdown Table
Upload or paste CSV and get a clean Markdown table instantly. Powered by PapaParse, fully local.