Base64 Encoder Decoder

Encode and decode Base64 for plain text, uploaded files, pasted screenshots, data URLs, and decoded file previews without leaving the browser.

How to use

  1. Paste text or a Base64 payload into the editor, or upload and paste a file directly.
  2. Choose whether you want raw Base64, URL-safe output, or a full data URL for files.
  3. Copy, download, preview, or decode the result back into text, an image, or a file.

Benefits

  • Handles both text and binary workflows from the same screen.
  • Supports clipboard images, uploads, drag and drop, and file preview.
  • Makes data URL generation and file recovery faster for debugging and integration work.

Common Base64 workflows

  • Turn an image or document into Base64 for API requests or HTML embeds.
  • Decode a Base64 payload from logs or third-party systems back into a file.
  • Generate data URLs for quick frontend previews and in-browser testing.

Working tips

  • Use Data URL mode when you need a directly embeddable string for frontend markup.
  • Use Decode to File when the payload represents an image, PDF, or other binary content.
  • Keep URL-safe mode on when your Base64 string will be passed through URLs or tokens.

Sample input text

Hello from jsonformatter.store

Sample Base64 output

SGVsbG8gZnJvbSBqc29uZm9ybWF0dGVyLnN0b3Jl

FAQ

Can I paste a screenshot directly into the Base64 tool?

Yes. Clipboard image payloads can be pasted directly into the page and encoded without uploading to a server.

Can I decode Base64 back into an image or downloadable file?

Yes. The tool can rebuild files from Base64 payloads and preview common formats like images, PDFs, audio, and video.

What to expect on this route

Use the Base64 route when you need one browser-based screen for text, file, image, and data URL encoding or decoding without leaving the local workflow.

Accepted input types

  • Paste plain text, raw Base64 strings, or full data URLs into the editor.
  • Uploads, drag and drop, and pasted clipboard images work for binary encode workflows.
  • URL-safe Base64 variants and strings without trailing padding can still be decoded here.

What this route can return

  • Encoded output can stay as raw Base64 or include a full data URL prefix for browser embeds.
  • Decoded payloads can be copied as text, previewed as media, or downloaded back as a file.
  • The same route supports switching the output back into the input when you need a quick follow-up transform.

Common decode issues

  • Corrupted payloads, wrong character sets, or truncated strings can break decode attempts.
  • Binary payloads may need file download or media preview instead of plain-text copy.
  • Keep URL-safe mode enabled when the Base64 value came from tokens, query params, or callback URLs.