ToolzyLab
Convert text or files to Base64 and back directly in your browser. Encode plain text, create Base64 from files, decode Base64 into readable text, or restore downloadable files — fully offline, fast, and privacy friendly.
Great for developers, APIs, web apps, data URIs, tokens, images, file sharing, debugging, and quick offline conversions. Paste text, drag in a file, or decode a Base64 string back into its original content.
Paste text, Base64, or upload any file to encode it instantly.
📄 text or files · ⚡ instant encode/decode · 📥 restore files · 🖼 data URL support · 🔒 no uploadUse the left side for raw text, Base64, or notes. The right side shows the processed result in a scrollable output pane.
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Inspect input type, Base64 validity, MIME type, payload size, decoded preview, and restore options.
Use Raw Base64 when you only need the encoded content itself. Use Data URL when you want something ready for HTML, CSS, previews, or direct embedding like images and text blobs.
See quick stats about the current output, data URL state, and decoded file possibility.
It can convert text into Base64, convert files into Base64, decode Base64 back into readable text, detect Data URLs, and rebuild downloadable files from encoded content without making your page ridiculously tall.
Base64 represents bytes with printable characters; it does not encrypt, compress, or make sensitive data safe. Choose text or file input, encode or decode, set cleanup and output details, then verify the decoded bytes, MIME type, filename, padding, and character encoding before placing the result in an API, data URI, email, or file workflow.
UTF-8 text can include characters that occupy more than one byte. If another system decodes those bytes with a different charset, the Base64 can be valid while the displayed text is wrong. Compare decoded content with the original and keep binary output as a file when it is not actually human-readable text.
Copied Base64 may contain line breaks, spaces, a data URI header, URL-safe hyphens or underscores, or omitted equals-sign padding. Use cleanup only when it matches the source. Analyze the input before changing it, because stripping arbitrary characters can hide corruption instead of repairing the payload.
Anyone who obtains Base64 can decode it. Do not use it to protect passwords, tokens, personal data, or encryption keys. For a data URI, confirm the MIME type and size; large inline assets increase markup size and cannot be cached independently like a normal file.
Decode an encoded sample and compare the actual bytes or text before integrating it.
Technical references: MDN guide to Base64 encoding and decoding
No. It is reversible encoding for representing bytes as text. Anyone with the value can decode it, so use real authenticated encryption when confidentiality is required.
The bytes may have been interpreted with the wrong character encoding, or the source was binary rather than text. Confirm UTF-8 or the producer's charset and download binary output as a file.
They are padding used to complete the final encoded group. Some URL-safe or protocol-specific forms omit padding, but the consumer's rules determine whether it may be restored or left out.
Yes when the decoded bytes actually represent that format. Remove a valid data URI prefix if needed, set the correct MIME type and filename, download, and verify the file signature and content.
It commonly substitutes hyphen and underscore for characters that have special meaning in URLs and may omit padding. Use the alphabet expected by the receiving protocol rather than changing it by guesswork.
No. It normally increases byte length by roughly one third before line wrapping or prefixes. Use compression for size reduction and Base64 only when a text-safe representation is required.